Toyota gear driven transfer case

Toyota gear driven transfer case DEFAULT

Chain VS Gear Driven T-Cases

1979-1995 Toyota Pickup/4Runner T-Case Info

From 1979 to 1995 Toyota used at least 12 different individual transfer case in Pickups and 4Runners. In choosing a Trail-Creeper replacement transfer case it is important to understand the differences between the cases and how to choose the correct case for your application.

Gear drive vs Chain drive:

Transfer cases that use a chain to connect the front drive are called "chain drive" style transfer cases. Transfer cases that do not have a chain and use direct gear contact are called "gear drive" transfer cases. Transfer cases installed into trucks with automatic transmission, and/or V6 engines are usually chain drive style. Some later model 4Runners with a manual transmission and a w58 transmission also have a chain drive case. Determining if a transfer case is chain or gear driven within this year range is easy to do by looking at the rear cover of the case and counting the number of bolts holding the cover in place. If the cover has 7 bolts (as shown in photo) it is a gear driven case. If the rear cover has 5 bolts then it is a chain drive style case. At this time Trail-Gear does not support any of the chain drive applications.

Top shift vs Forward shift:

Gear driven transfer cases that have their shifter come up out of the top of the transfer case are known as "top shift" style transfer cases. Some transfer cases have a block off plate installed on the top hole and are shifted via shift trails and a shift lever located at the rear of the transmission. This style of transfer case is known as a "forward shift" transfer case.

The rear case of a dual transfer case assembly must always be a top shift style case, otherwise it would not be possible to shift the rear reduction housing or 2wd/4wd sections. The front reduction section of a dual transfer case can be either a top shift or forward shift style. Normally a forward shift case is used with a forward shift transmission. Toyota uses two different reach shift forks, 4.5" and 4.0". It is important to have the correct shift forks for the transmission used or the transfer case shifter will not work correctly.

21 or 23 spline:

All 1986-1987 turbo applications use 23 spline gears between the transmission and the transfer case. All other gear driven applications in this year range use 21 spline gears. The difference between these gears is that the 23 spline parts are a little larger and thus stronger than the 21 spline parts

If you are installing a dual case into a vehicle that has a 23 spline output transmission (such as a turbo or V6) it is recommended that you use a 23 spline dual case adapter and a 23 spline rear case input gear.

On applications that use a transmission with a 21 spline output you must use a 21 spline input gear on the front reduction housing of a dual case setup. On this application it is possible to use 21 or 23 spline gears between the front and rear reduction sections. If a 21 spline input gear is used on the rear reduction unit than a 21 spline coupler mused be used on the dual adapter. Likewise if a 23 spline input gear is used on the rear reduction unit than a 23 spline coupler mused be used on the dual adapter.

We strongly recommend that 23 spline components be used between the front and rear reduction units on all dual transfer case assemblies. The 23 spline hardware is stronger than the 21 spline. This is not a problem at the interface between the transmission and the transfer case with a stock or mildly built 4cyl motor. As engine power is delivered through the first transfer case into the second case the torque is multiplied by a factor of 2.28 when the transfer case is in low range. When both reduction sections of a dual transfer case are engaged there is 2.28 times as much more torque placed on the rear input gear/coupler as compared to the front input gear/coupler.

If you have additional questions regarding transfer case applications or installation please call us.

Year

Body

Motor

Shift Style

Spline

Speedo Sender

79 - 7/83

Pickup

Carb 4cyl

Top Shift

21

Mechanical

8/83 - 8/88

Pickup/4Runner

Carb 4cyl

4.5" Forward Shift

21

Mechanical

85 - 88

Pickup

EFI 4Cyl

Top Shift

21

Mechanical

85 - 89

4Runner

EFI 4Cyl

Top Shift

21

Mechanical

86 - 87

Pickup/4Runner

Turbo 4Cyl

4.5" Forward Shift

23

Mechanical

89-91

Pickup

EFI 4Cyl

4.0" Forward Shift

21

Mechanical

90 - 91

4Runner

EFI 4Cyl

4.0" Forward Shift

21

Mechanical

92 - 95

Pickup

EFI 4Cyl

4.0" Forward Shift

21

Electronic

92 - 93

4Runner

EFI 4Cyl

4.0" Forward Shift

21

Electronic

Core Charges: There is a $200 core charge on single and dual TrailCreeper transfer case units. There is no core charge for crawl box units. Transfer case prices listed above include the core charge as part of the price. Upon returning your used core case, you will be issued a company check for the core amount after the unit is inspected. Dissembled cores are not acceptable. Damaged gears and bearings are acceptable. Damaged housings sections are not acceptable. Cores should be complete, assembled and in rebuildable condition. Please include a copy of your invoice with core. Customer is responsible for shipping costs of core return. Transfer Case Oil:

Transfer cases are shipped without oil. Cases should be filled with 80-90wt GL5 gear oil. A single transfer case uses approximately 2 quarts of oil. A dual transfer case uses approximately 3 quarts of oil. Both single and dual units can be filled from the rear fill plug shown in the photo. If filling your transfer case for the first time check the fluid level after a short drive. Fluid level should be even with the fill plug opening. Fluid should be changed after 1,000 miles and then every 30,000 miles there after. Synthetic oil can be used and will reduce friction and internal wear. Shift levers are not included with transfer case sales.

Sours: https://trail-gear.com/transfer-case-information

Trail-Creeper 4.7 Transfer Cases

All products carry our 12 Month Limited Warranty. All warranties are limited to the original purchaser and are not transferable to subsequent owners of the product. The warranty period begins on the purchase date. Trail-Gear warrants that it will repair or replace, free of charge, any eligible product which, under normal conditions of use and service, proves to be defective in materials or workmanship. This warranty does not cover any labor costs incurred in diagnosis of defects, removal or reinstallation of a product, nor does it cover any other consequential expenses.

Please read and review our return and warranty requirement document before sending in products.

Warranty Exclusions


Trail-Gear Inc. warranty does not cover, and Trail-Gear Inc. shall not be liable for, any undertaking, representation, or agreements made by dealers or other third parties selling Trail-Gear products, except where such agreements are within the provisions of this Warranty.

Specifically excluded from this warranty are failures caused by lack of maintenance, misuse, negligence, modification, abuse, improper application, crash damage, installation or operation, or failures caused by unauthorized service or use of unauthorized parts.

Additionally excluded from this warranty are parts which are subject to normal wear and tear, such as bushings, fluids, hoses, gaskets, belts, etc. Products not manufactured by Trail-Gear Inc. are excluded from any warranty and shall be handled with the original manufacturer.

All parts used in a competitive racing environment are excluded from this warranty. If, after inspection, a part returned, under any warranty, is deemed to be ineligible for warranty repair or replacement, the part may be repaired or replaced for a discounted cost. Return shipping charges will apply. Any part for which a warranty replacement is sought must be returned to Trail-Gear Inc. before any replacement items can be shipped. All replacement parts shipped before the suspect part has been received and evaluated by Trail-Gear, MUST BE PAID IN FULL. In such a case, after the suspect part has been received and approved for a warranty replacement, the purchase price for the replacement will be refunded.

  • Please contact Trail-Gear Inc. at 559-252-4950 or email [email protected] prior to returning any product under warranty to verify that warranty is still in effect.
  • Products must be shipped back to Trail-Gear Inc. at the expense of the customer.
    ATTN: WARRANTY
    5356 E. Pine Avenue
    Fresno, CA 93727.
  • Please place a clearly marked copy of the original invoice inside the package.
  • Please include a short note stating the problem you are experiencing.

If any of the above mentioned policy is not met, the package will be refused or warranty claim denied. By completing the steps above, this will ensure faster processing of your claim so that Trail-Gear can get your product back to you as quickly as possible. All warranties are generally processed within 2-3 business days of Trail-Gear receiving the parts from you. Additional delays may be incurred if product needs additional testing or repairing.

If you are an international customer, please email the warranty department at [email protected] to receive further instruction. International customers may have the option to field destroy an approved warranty to avoid costly return shipping. In this case, any shipping charges for replacement parts will be at the expense of the customer.

Sours: https://trail-gear.com/drivetrain/trail-creepertm-4-7-transfer-cases.html
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TRAIL-GEAR - Gear-Drive Transfer Case Parts

4.7 Gearsets, Gasket Kits, Bearing Kits, Full Rebuild Kits, Twin-Stick Shifters, Stock Replacement Shifters, Shifter Rebuild Parts, Transfer Case Crossmembers, Dual Case Adapters

T-Case Shifter Kit, Top ShiftT-Case Shifter Kit, Top ShiftNew

Stock replacement shifter handle and base. Bolts in using stock bolts. Fits top shift gear drive transfer cases from 1979-1995.

Item #: TG-TOPSHIFT-SHIFTERTrail-GearGear-Drive Transfer Case Parts|TRAIL-GEAR

USD166.50166.501166.50

Trail-Gear - T-Case Shifter Kit, Top Shift
TRAIL-GEAR - Gear-Drive Transfer Case Parts - Trail-Gear - T-Case Shifter Kit, Top Shift

T-Case Shifter Kit, Top Shift

100071-1-KIT, trail gear, toyota, trail-gear, toyota

Description: Stock replacement shifter handle and base. Bolts in using stock bolts. Fits top shift gear drive transfer cases from 1979-1995.

Item #: TG-TOPSHIFT-SHIFTER

Condition: New

Please Call for Availability

Top Shift T-Case Conversion Kit ATop Shift T-Case Conversion Kit ANew

Need to convert a forward shift case to top shift? We have a great kit that will get the job done. Our kit is made with ALL new parts, and is already machined to accept a 4.7 input gear. Kit Inc...

Item #: TG-TOPSHIFT-ATrail-GearGear-Drive Transfer Case Parts

USD154.50294.80154.50

Trail-Gear - Top Shift T-Case Conversion Kit A
TRAIL-GEAR - Gear-Drive Transfer Case Parts - Trail-Gear - Top Shift T-Case Conversion Kit A

Top Shift T-Case Conversion Kit A

100119-1-KIT

Description: Need to convert a forward shift case to top shift? We have a great kit that will get the job done. Our kit is made with ALL new parts, and is already machined to accept a 4.7 input gear. Kit...More Details »

Item #: TG-TOPSHIFT-A

Condition: New

Please Call for Availability

Top Shift T-Case Conversion Kit BTop Shift T-Case Conversion Kit BNew

Need to convert a forward shift case to top shift? We have a great kit that will get the job done. Our kit is made with ALL new parts, and is already machined to accept a 4.7 input gear. Kit Inc...

Item #: TG-TOPSHIFT-BTrail-GearGear-Drive Transfer Case Parts

USD215.50215.501215.50

Trail-Gear - Top Shift T-Case Conversion Kit B
TRAIL-GEAR - Gear-Drive Transfer Case Parts - Trail-Gear - Top Shift T-Case Conversion Kit B

Top Shift T-Case Conversion Kit B

100119-1-KIT

Description: Need to convert a forward shift case to top shift? We have a great kit that will get the job done. Our kit is made with ALL new parts, and is already machined to accept a 4.7 input gear. Kit...More Details »

Item #: TG-TOPSHIFT-B

Condition: New

Please Call for Availability

Top Shift T-Case Conversion Kit CTop Shift T-Case Conversion Kit CNew

Need to convert a forward shift case to top shift? We have a great kit that will get the job done. Our kit is made with ALL new parts, and is already machined to accept a 4.7 input gear. Kit Inc...

Item #: TG-TOPSHIFT-CTrail-GearGear-Drive Transfer Case Parts

USD287.002210.90287.00

Trail-Gear - Top Shift T-Case Conversion Kit C
TRAIL-GEAR - Gear-Drive Transfer Case Parts - Trail-Gear - Top Shift T-Case Conversion Kit C

Top Shift T-Case Conversion Kit C

100122-1-KIT

Description: Need to convert a forward shift case to top shift? We have a great kit that will get the job done. Our kit is made with ALL new parts, and is already machined to accept a 4.7 input gear. Kit...More Details »

Item #: TG-TOPSHIFT-C

Condition: New

Please Call for Availability

Toyota 4.7 Lowrange Gear Kit 21 SplineToyota 4.7 Lowrange Gear Kit 21 SplineNew

Kit to replace your stock 2.28 to 1 gears with 4.7 to 1 lowrange gears for better crawling performance.

Item #: TG-4.7-GS-21Trail-GearGear-Drive Transfer Case Parts

USD629.00629.001629.00

Trail-Gear - Toyota 4.7 Lowrange Gear Kit 21 Spline
TRAIL-GEAR - Gear-Drive Transfer Case Parts - Trail-Gear - Toyota 4.7 Lowrange Gear Kit 21 Spline

Toyota 4.7 Lowrange Gear Kit 21 Spline

toyota,4.7,low,range,4cyl,lowrange,gears,crawler, TG-4.7-GS,105000-1-KIT,Toyota 4.7 Lowrange Gear Kit,4.7

Description: Kit to replace your stock 2.28 to 1 gears with 4.7 to 1 lowrange gears for better crawling performance.

Item #: TG-4.7-GS-21

Condition: New

Please Call for Availability

Toyota 4.7 Lowrange Gear Kit 23 SplineToyota 4.7 Lowrange Gear Kit 23 SplineNew

Kit to replace your stock 2.28 to 1 gears with 4.7 to 1 lowrange gears for better crawling performance.

Item #: TG-4.7-GS-23Trail-GearGear-Drive Transfer Case Parts

USD629.00629.001629.00

Trail-Gear - Toyota 4.7 Lowrange Gear Kit 23 Spline
TRAIL-GEAR - Gear-Drive Transfer Case Parts - Trail-Gear - Toyota 4.7 Lowrange Gear Kit 23 Spline

Toyota 4.7 Lowrange Gear Kit 23 Spline

toyota,4.7,low,range,4cyl,lowrange,gears,crawler, TG-4.7-GS,105001-1-KIT,Toyota 4.7 Lowrange Gear Kit,4.7

Description: Kit to replace your stock 2.28 to 1 gears with 4.7 to 1 lowrange gears for better crawling performance.

Item #: TG-4.7-GS-23

Condition: New

Please Call for Availability

Toyota Driveshaft U-joint - MatsubaToyota Driveshaft U-joint - MatsubaNew

Specifications: OEM Replacement U-Joint We have tested these joints to 3700 ft-lbs of torque before failure Includes four install clips and Zerk grease fitting

Item #: U-TOY-MATSTrail-GearGear-Drive Transfer Case Parts|Toyota Axles|TRAIL-GEAR|U-JOINTS

USD40.75236.6840.75

Trail-Gear - Toyota Driveshaft U-joint - Matsuba
TRAIL-GEAR - Gear-Drive Transfer Case Parts - Trail-Gear - Toyota Driveshaft U-joint - Matsuba

Toyota Driveshaft U-joint - Matsuba

Description: Specifications: OEM Replacement U-Joint We have tested these joints to 3700 ft-lbs of torque before failure Includes four install clips and Zerk grease fitting

Item #: U-TOY-MATS

Condition: New

Please Call for Availability

Toyota Dual Transfer Case Adapter - 21 SplineToyota Dual Transfer Case Adapter - 21 SplineNew

Adapter to add a second low range box between your original transmission and transfer case for an extra low range gear. The stock low range ratio for Toyota gear driven cases is 2.28 to 1; with the...

Item #: TG-DCADAPT-21Trail-GearGear-Drive Transfer Case Parts

USD549.50549.501549.50

Trail-Gear - Toyota Dual Transfer Case Adapter - 21 Spline
TRAIL-GEAR - Gear-Drive Transfer Case Parts - Trail-Gear - Toyota Dual Transfer Case Adapter - 21 Spline

Toyota Dual Transfer Case Adapter - 21 Spline

dual,cases,toyota,case,adapter,duals,2.28,to,1,double,transfer

Description: Adapter to add a second low range box between your original transmission and transfer case for an extra low range gear. The stock low range ratio for Toyota gear driven cases is 2.28 to 1; with the...More Details »

Item #: TG-DCADAPT-21

Condition: New

Please Call for Availability

Toyota Dual Transfer Case Adapter - 23 SplineToyota Dual Transfer Case Adapter - 23 SplineNew

Adapter to add a second low range box between your original transmission and transfer case for an extra low range gear. The stock low range ratio for Toyota gear driven cases is 2.28 to 1; with the...

Item #: TG-DCADAPT-23Trail-GearGear-Drive Transfer Case Parts

USD549.50549.501549.50

Trail-Gear - Toyota Dual Transfer Case Adapter - 23 Spline
TRAIL-GEAR - Gear-Drive Transfer Case Parts - Trail-Gear - Toyota Dual Transfer Case Adapter - 23 Spline

Toyota Dual Transfer Case Adapter - 23 Spline

dual,cases,toyota,case,adapter,duals,2.28,to,1,double,transfer

Description: Adapter to add a second low range box between your original transmission and transfer case for an extra low range gear. The stock low range ratio for Toyota gear driven cases is 2.28 to 1; with the...More Details »

Item #: TG-DCADAPT-23

Condition: New

Please Call for Availability

Toyota Dual Transfer Case Crossmember 79-83Toyota Dual Transfer Case Crossmember 79-83New

Crossmember designed to be used with a dual transfer case setup. This crossmember uses 2 rubber mounts instead of one to help handle the extra torque from double low range. Also acts as a skid plat...

Item #: TG-DUALCROSSMTrail-GearDifferential Armor, Bumpers, Rock Sliders, Winch Mounts|Gear-Drive Transfer Case Parts

USD358.002322.20358.00

Trail-Gear - Toyota Dual Transfer Case Crossmember 79-83
TRAIL-GEAR - Gear-Drive Transfer Case Parts - Trail-Gear - Toyota Dual Transfer Case Crossmember 79-83

Toyota Dual Transfer Case Crossmember 79-83

dual,cases,case,crossmember,toyota,duals,TG-DUALCROSSM,120004-1-KIT,Toyota Dual Case Crossmember

Description: Crossmember designed to be used with a dual transfer case setup. This crossmember uses 2 rubber mounts instead of one to help handle the extra torque from double low range. Also acts as a skid...More Details »

Item #: TG-DUALCROSSM

Condition: New

Please Call for Availability

Toyota Gear Drive Transfer Case Heavy Duty Shift SpringToyota Gear Drive Transfer Case Heavy Duty Shift SpringNew

Heavy-duty shift spring for the Toyota gear driven transfer case. Prevents common problem of jumping out of gear when in low range under load. Bolt sold seperately

Item #: TG-HD-SHIFT-SPRINGTrail-GearGear-Drive Transfer Case Parts

USD6.0025.406.00

Trail-Gear - Toyota Gear Drive Transfer Case Heavy Duty Shift Spring
TRAIL-GEAR - Gear-Drive Transfer Case Parts - Trail-Gear - Toyota Gear Drive Transfer Case Heavy Duty Shift Spring

Toyota Gear Drive Transfer Case Heavy Duty Shift Spring

hd,shift,spring,toyota,transfer,case,shift,heavy,duty,TG-HD-SHIFT-SPRING,100069-1,Toyota Gear Drive Case HD Shift Spring,SHIFT SPRING

Description: Heavy-duty shift spring for the Toyota gear driven transfer case. Prevents common problem of jumping out of gear when in low range under load. Bolt sold seperately

Item #: TG-HD-SHIFT-SPRING

Condition: New

Please Call for Availability

Toyota Gear Drive Transfer Case Rebuild Kit (Minor)Toyota Gear Drive Transfer Case Rebuild Kit (Minor)New

Kit to freshen up an old, leaky Toyota gear driven transfer case. Kit includes all seals, gaskets and bearings, except needle bearings. Uses OEM Toyota gaskets and high quality japanese bearings. D...

Item #: TOYGEARDRIVE-MINORTrail-GearGear-Drive Transfer Case Parts|Rebuild Kits

USD263.502237.15263.50

Trail-Gear - Toyota Gear Drive Transfer Case Rebuild Kit (Minor)
TRAIL-GEAR - Gear-Drive Transfer Case Parts - Trail-Gear - Toyota Gear Drive Transfer Case Rebuild Kit (Minor)

Toyota Gear Drive Transfer Case Rebuild Kit (Minor)

toyota,case,rebuild,transfer,kit,gear,drive, 105001-1,TOY XFER CASE MINI,Toyota Gear Drive Transfer Case Minor Rebuild Kit

Description: Kit to freshen up an old, leaky Toyota gear driven transfer case. Kit includes all seals, gaskets and bearings, except needle bearings. Uses OEM Toyota gaskets and high quality japanese bearings. Does not include output shaft nuts

Item #: TOYGEARDRIVE-MINOR

Condition: New

Please Call for Availability

Toyota Gear Drive Transfer Case Twin Stick Shifter - Forward ShiftToyota Gear Drive Transfer Case Twin Stick Shifter - Forward ShiftNew

Twin Stick Shifter for the Toyota gear drive transfer case. Allows shifting to 2wd low range independent of 4wd shifting; one lever controls Hi/Low range, the other controls 2wd/4wd

Item #: TG-TWIN-STCK-FORWARDTrail-GearGear-Drive Transfer Case Parts

USD226.50226.501226.50

Trail-Gear - Toyota Gear Drive Transfer Case Twin Stick Shifter - Forward Shift
TRAIL-GEAR - Gear-Drive Transfer Case Parts - Trail-Gear - Toyota Gear Drive Transfer Case Twin Stick Shifter - Forward Shift

Toyota Gear Drive Transfer Case Twin Stick Shifter - Forward Shift

toyota,twin,stick,shifter,TG-TWIN-STCK,107507-1-KIT,Toyota Twin Stick Shifter

Description: Twin Stick Shifter for the Toyota gear drive transfer case. Allows shifting to 2wd low range independent of 4wd shifting; one lever controls Hi/Low range, the other controls 2wd/4wd

Item #: TG-TWIN-STCK-FORWARD

Condition: New

Please Call for Availability

Toyota Gear Drive Transfer Case Twin Stick Shifter - Top ShiftToyota Gear Drive Transfer Case Twin Stick Shifter - Top ShiftNew

Twin Stick Shifter for the Toyota gear drive transfer case. Allows shifting to 2wd low range independant of 4wd shifting; one lever controls Hi/Low range, the other controls 2wd/4wd

Item #: TG-TWIN-STCK-TOPTrail-GearGear-Drive Transfer Case Parts

USD226.25226.251226.25

Trail-Gear - Toyota Gear Drive Transfer Case Twin Stick Shifter - Top Shift
TRAIL-GEAR - Gear-Drive Transfer Case Parts - Trail-Gear - Toyota Gear Drive Transfer Case Twin Stick Shifter - Top Shift

Toyota Gear Drive Transfer Case Twin Stick Shifter - Top Shift

toyota,twin,stick,shifter,TG-TWIN-STCK,107500-1-KIT,Toyota Twin Stick Shifter

Description: Twin Stick Shifter for the Toyota gear drive transfer case. Allows shifting to 2wd low range independant of 4wd shifting; one lever controls Hi/Low range, the other controls 2wd/4wd

Item #: TG-TWIN-STCK-TOP

Condition: New

Please Call for Availability

Toyota Long Travel Driveshaft KitToyota Long Travel Driveshaft KitNew

Kit that turns your stock toyota driveshaft into a long travel unit for long travel suspension setups. A must with any SAS kit to prevent your driveshaft from pulling apart under suspension droop

Item #: D-SHAFT-TOY-TGTrail-GearGear-Drive Transfer Case Parts|Suspension Kits and Parts|DRIVE SHAFTS

USD382.00382.001382.00

Trail-Gear - Toyota Long Travel Driveshaft Kit
TRAIL-GEAR - Gear-Drive Transfer Case Parts - Trail-Gear - Toyota Long Travel Driveshaft Kit

Toyota Long Travel Driveshaft Kit

long,travel,driveshaft,toyota,drive,shaft,off,road,heavy,duty, 100130-1-KIT,d-shaft-toy-tg

Description: Kit that turns your stock toyota driveshaft into a long travel unit for long travel suspension setups. A must with any SAS kit to prevent your driveshaft from pulling apart under suspension droop

Item #: D-SHAFT-TOY-TG

Condition: New

Toyota Speedometer Extension CableToyota Speedometer Extension CableNew

Used to extend your stock speedometer cable so that your mechanical speedometer will still function after installing a dual transfer case setup

Item #: TG-Speedomter-ExCTrail-GearGear-Drive Transfer Case Parts

USD46.7546.75146.75

Trail-Gear - Toyota Speedometer Extension Cable
TRAIL-GEAR - Gear-Drive Transfer Case Parts - Trail-Gear - Toyota Speedometer Extension Cable

Toyota Speedometer Extension Cable

toyota,speedometer,extension,speedo,TG-Speedomter-ExC,100063-1-KIT,Toyota Speedometer Extension Cable for Gear Drive Transfer Cases

Description: Used to extend your stock speedometer cable so that your mechanical speedometer will still function after installing a dual transfer case setup

Item #: TG-Speedomter-ExC

Condition: New

Please Call for Availability

Toyota Transfer Case Shift KnobsToyota Transfer Case Shift KnobsNew

Shift knobs for Toyota transfer cases. Available with "2.28", "4.7", "2wd 4wd" or mountain logo on the top

Item #: TG-SHIFT-KNOBTrail-GearGear-Drive Transfer Case Parts

USD9.259.2519.25

Trail-Gear - Toyota Transfer Case Shift Knobs
TRAIL-GEAR - Gear-Drive Transfer Case Parts - Trail-Gear - Toyota Transfer Case Shift Knobs

Toyota Transfer Case Shift Knobs

toyota,shift,knob,transfer,case,TG-SHIFT-KNOB,182500-KIT,Toyota Transfer Case Shift Knob

Description: Shift knobs for Toyota transfer cases. Available with "2.28", "4.7", "2wd 4wd" or mountain logo on the top

Item #: TG-SHIFT-KNOB

Condition: New

Please Call for Availability

Toyota V6 Transfer Case AdapterToyota V6 Transfer Case AdapterNew

This adapter plate allows one or more 4cyl gear driven transfer case(s) to be bolted up to 1988-1995 Toyota 3.0L V6 5 speed transmissions. This updated design does not require modification to the t...

Item #: TG-V6-TC-ADPTTrail-GearGear-Drive Transfer Case Parts

USD462.50462.501462.50

Trail-Gear - Toyota V6 Transfer Case Adapter
TRAIL-GEAR - Gear-Drive Transfer Case Parts - Trail-Gear - Toyota V6 Transfer Case Adapter

Toyota V6 Transfer Case Adapter

toyota,3.0,V6,transfer,case,adapter,plate,transmision,gear,drive,4cyL,topshift,TG-V6-TC-ADPT,100086-1-KIT,Toyota 3.0 V6 Transmision to 4cyl Transfer Case Adpater Plate

Description: This adapter plate allows one or more 4cyl gear driven transfer case(s) to be bolted up to 1988-1995 Toyota 3.0L V6 5 speed transmissions. This updated design does not require modification to the...More Details »

Item #: TG-V6-TC-ADPT

Condition: New

Please Call for Availability


Sours: https://eastcoastgearsupply.com/c-62653-trail-gear-gear-drive-transfer-case-parts.html
Toyota Transfer Case Phuckery

Transfer Case Bible

Gear Drive RF1A Toyota Transfer Case

This is the ORIGINAL Gear Drive Transfer Case Bible created by Marlin Crawler back in the 90s. All styles are a 2-speed plus neutral design, with a 1.00:1 high range and a 2.28:1 low range. The high range is a direct-drive straight-through design which maximizes efficiency and torque handling. Because the input directly connects to the output, there is no way to alter the high range gear ratio. In neutral, the front and rear outputs are connected to one another with only the input rotating independently of both outputs. Twin Stick kits are available that allow for the input + rear output + front output to all three rotate independently of one another.

Type 1-A Carb 4Cyl

  • Installed 1979 - 1980
  • Top Shift
  • Short Style Case
  • Short Low Range Shift Rod
  • C-Clip Retained 2WD/4WD Rod
  • 8 or 9 mm Flange Bolts
  • Noisey Style Gears
  • 21 Spline "Fuseless" L43-Style Input
  • 27 Spline Outputs

Type 1-B Carb 4Cyl

  • Installed 1981 - 4/1983
  • Top Shift
  • Short Style Case
  • Short Low Range Shift Rod
  • C-Clip Retained 2WD/4WD Rod
  • 8mm Flange Bolts
  • Noisey Style Gears
  • 21 Spline Input
  • 27 Spline Outputs

Type 1-C Carb 4Cyl

  • Installed 4/1983 - 8/1983
  • Top Shift
  • Tall Style Case
  • Short Low Range Shift Rod
  • C-Clip Retained 2WD/4WD Rod
  • 8mm Flange Bolts
  • Noisey Style Gears
  • 21 Spline Input
  • 27 Spline Outputs

Type 2-A Carb 4Cyl

  • Installed 8/1983 to 4/1984
  • Forward Shift, 4.5" Offset
  • Shifter Block Off Plate
  • Tall Style Case
  • 10mm Flange Bolts
  • Quiet Run Gears
  • No Bearing Retainer Clip
  • 21 Spline Input
  • 27 Spline Outputs

Type 2-B Carb 4Cyl

  • Installed 4/1984 - 8/1988
  • Forward Shift, 4.5" offset
  • Shifter Block Off Plate
  • Tall Style Case
  • 10mm Flange Bolts
  • Quiet Run Gears
  • With Bearing Retainer Clip
  • 21 Spline Input
  • 27 Spline Outputs

Type 3 EFI 4Cyl

  • Installed 1985 - 1988 EFI Pickup
  • Installed 1985 - 1989 EFI 4Runner
  • Top Shift
  • Tall Style Case
  • Long Low Range Shift Rod
  • Hook Retained 2WD/4WD Rod
  • 10mm Flange Bolts
  • Quiet Run Gears
  • With Bearing Retainer Clip
  • 21 Spline Input
  • 27 Spline Outputs

Type 4 Turbo EFI 4Cyl

  • Installed 1986 - 1987 22R-TE
  • Tall Style Case
  • 10mm Front Flange Bolts
  • Quiet Run Gears
  • With Bearing Retainer Clip
  • Same Shift Rods as Type 2 Cases
  • 23 Spline Input
  • 27 Spline Outputs

Type 5 PTO EFI 4Cyl

  • Unique PTO (Power Take-Off) access port on housing #1 (reduction housing)
  • 4-bolt rectangular PTO mount flange
  • External device powered by the Low Speed Idler Gear
  • External device believed to be a Water Pump on International Toyota Fire Trucks
  • Tall Style Case
  • Long Low Range Shift Rod (if top shift)
  • Hook Retained 2WD/4WD Rod (if top shift)
  • Top or Forward Shift
  • Quiet Run Gears
  • 10mm Flange Bolts
  • With Bearing Retainer Clip
  • 21 Spline Input
  • 27 Spline Outputs

Type 6-A EFI 4Cyl

  • Installed 1989 - 1991 Pickup
  • Installed 1990 - 1991 4Runner
  • Tall Style Case
  • Forward Shift, 4" Offset
  • 10mm Flange Bolts
  • Quiet Run Gears
  • Block Off Plate
  • Mechanical Speedo Cable Drive
  • 21 Spline Input
  • 27 Spline Outputs

Type 6-B EFI 4Cyl

  • Installed 1992 - 1995 Pickup
  • Installed 1992 - 1993 4Runner
  • Tall Style Case
  • Forward Shift, 4" Offset
  • 10mm Flange Bolts
  • Quiet Run Gears
  • Block Off Plate
  • No Flat Washers on Case Bolts
  • Electrical Speedo Cable Drive
  • 21 Spline Input
  • 27 Spline Outputs

How to ID Gear Drive Case

If you have 7 bolts in the rear cover then you have the gear driven unit.
If you have 5 bolts holding the rear cover then you have the chain drive unit.
Bolt #7 is behind the drive shaft and can't be seen in this picture.

Gear Drive T/Case Rear Bolt Pattern


Top vs Forward Shift

In both photos the transmission and transfer case have been separated to show where one ends and the other starts. It also helps show the shift forks on the forward shift setup. The left photo shows a top shifting transfer case and transmission. Notice the tcase shifter comes out of the top of the tcase. The transmission has just one shifter. Notice there are no forks on the front of the tcase. The right photo is a forward shift transfer case. Notice the block off plate on top of the case. This unit is shifted through two rails that connect to the transmission. A forward shift transmission like this one has two shifters, one for the tranny and one for the tcase. Click photos for larger image.

The block off plate of a forward shift style tcase can be seen from under the vehicle. From under the truck on the driver side look up at the transfer case to see the block off plate.

Top Shift

Forward Shift

 

Please see our Transfer Case Parts & Upgrades and our Shifter Parts page for Optional, Replacement, and Conversion Parts.

Sours: https://www.marlincrawler.com/tech/transfercase/transfer-case-bible

Gear transfer case driven toyota

Toyota Transfer Case Rebuild & Upgrades - Toyota T-Case Beef

Tech and upgrade options

By now, plenty of 'wheelers have discovered the versatility and durability of Toyota trucks and 4Runners. These sturdy four-wheel-drive vehicles have proven their prowess over a wide variety of terrain. However, for those wanting to push the limits of what they can do with their Toyotas, the aftermarket supply of parts for these rigs has exploded over the past few years, and parts now are available to turn a Toyota 4x4 into a hardcore 'wheeling machine.

As tire size grows, so does the strain on your rig's drivetrain. The well-known Achilles' heel of the straight-axle Toyota are the Birfield joints in the front axle. Upgrade kits are available, but some 'wheelers choose to forego such a modification and simply swap in beefy domestic solid axles to handle hardcore 'wheeling.

But as often as axles, engines, and trannies are swapped out of Toyotas for bigger and badder components, the stock transfer cases live on in many of these rigs. Why? Simply put, the transfer cases found in most Toyota trucks and 4Runners are stout and reliable.

From 1979 through '95, many Toyota trucks and 4Runners used a gear-drive transfer case: model RF1A. Beginning in 1984, a chain-drive transfer case of lighter design was also used in Toyotas with automatic transmissions, and from 1988 on, in V-6-powered vehicles. All V-6 models use the chain-drive case, while those trucks with four-cylinder engines come with either style, depending on type of transmission. While the gear-drive Toyota transfer case is more desirable from a standpoint of strength and reliability, both styles are quite robust and able to withstand considerable abuse.

Subtle bearing and gear changes have been made in some of the units from year to year, but only three basic low-range ratios have been offered-2.28:1, 2.57:1, and 2.66:1. The high range on all Toyota transfer cases is 1:1.

The gear-drive, or counter-gear, transfer cases have a 2.28:1 low-range gear ratio and use a 21-spline input shaft. The Toyota transfer cases used in the manual-transmission turbocharged trucks also have a 2.28:1 ratio, but have a stronger 23-spline input shaft. Turbocharged 4Runners were built only with automatic transmissions. These and other automatic-transmission Toyotas use electronically controlled transfer cases with a 2.66:1 low-range ratio. These use a special viscous coupling system at the inputs to couple and release power to the drivetrain based on road conditions. Chain-drive cases used on V-6-equipped trucks have a low-range ratio of 2.57:1 and 23-spline input shafts. These VF1A cases are also called planetary gear cases.

In 1986, along with the introduction of independent front suspension, the automatic-transmission transfer case was changed so it could be shifted from 2-high to 4-high on the fly. Then in 1989, Toyota introduced the 4WDemand system on some models. This system allows the driver additional ability of shifting from 4-high to 4-low at slow speeds.

Some of the later-model transfer cases also incorporate a small transfer case oil cooler that is plumbed into the rear of the case. On the Tacoma and newer 4Runners, the front driveshaft output is on the driver side, but is on the passenger side on older models.

Over the years, the Toyota gear-drive transfer cases have come with two different shifter styles. There was the top-shift style, with the shifters exiting the top of the Toyota transfer case reduction box, and there was the forward-shift style, with the shifters exiting from the top of the transmission tailhousing. Early models from 1979 to late '83 were top-shift, and used a slightly weaker, noisier gear design than later models. In the 1984 model year, Toyota upgraded the transfer case to a quieter gear design with the addition of a sub-gear and thrust washer on the counter-gear.

Carbureted models from about 1984 to '87 used forward-shift-style transfer cases, as did most all models starting about 1989 (trucks) and 1990 (4Runners) onward. Marlin Crawler sells a kit to convert forward-shift models to top-shift style, as needed for aftermarket dual-case or adapter kits.

The speedometer-drive gear (or electronic speedo sender for some years) for Toyota trucks lies in the transfer case. Unfortunately, unlike many domestic trucks, the speedometer gear cannot be changed to compensate for gearing and/or tire changes. Only an outboard speed converter can be used to recalibrate the speedometer on trucks with a cable.

Gear Upgrades
Though the Toyota transfer case is a solid performer, there are still some modifications that will improve its gear capabilities. The biggest advantage of lower gearing is that obstacles can be traversed with much greater control. This, in turn, places less stress on driveline components.The first type of these low-range conversions is what is referred to as a dual-case setup. The Toyota transfer case has two major sections: the front reduction box that selects between high and low ranges, and the rear portion that selects between two-wheel-drive and four-wheel-drive.

In a dual-case setup, a machined aluminum adapter plate mates a second gear-reduction box to the front of the gear-reduction portion of the stock transfer case. This takes the stock 2.28:1 ratio and adds an additional 2.28:1 ratio gearset to provide a final ratio of 5.2:1. With such a setup you get a high- and low-range ratio for each of the two reduction boxes. With this you get 15 forward gears with transfer case ratios of 1:1, 2.28:1, and 5.2:1. You also have the advantage of running in two-wheel-drive low range by shifting only the forward transfer case into its low range.

Such a conversion does require some additional modifications to the truck, along with the transfer case modifications. Another hole must be cut in the cab floor to accommodate the additional transfer case shift lever. Also, the rear driveshaft must be shortened about 6 inches and the front driveshaft lengthened by an equal amount.

The second type of low-range conversion simply involves replacing several of the internal reduction-box gears. In this case, the high range still remains at 1:1, but the low range is reduced to 4:1, or with some kits, a whopping 4.7:1. This more than doubles your low-speed crawl torque and allows walking over difficult obstacles with much more smoothness and control.

Installing the replacement gears requires disassembly of the transfer case. However, only the transfer case modifications are needed and no further modifications to the truck are required. Since only the internals of the transfer case are modified, it is not necessary to modify the driveshafts or any other parts of the truck. For even lower ratios, consider combining a dual-case conversion with a set of lower-range gears.

Note that both dual-case conversions and low-gear conversions are available for use only with the gear-drive transfer cases. This is fine if you have a four-cylinder five-speed. But what about those with automatic transmissions, V-6 engines, or a new Tacoma truck? Marlin Crawler has come up with solutions to address most of these configurations.

In addition to its Ultimate kit, Marlin Crawler has dual transfer case kits and low-range gear kits available for all V-6 3.4L Tacomas with automatic or manual transmissions. For Tacomas with a swapped-in straight axle, both right-hand-drive and left-hand-drive conversion components are available. At the time of this writing, four-cylinder Tacoma parts were being designed as well.

Other Upgrades
Along with the many reduction-gear options available for Toyotas, there are some other interesting upgrades. One of these upgrades is the Twin-Stick Conversion Kit available from Front Range Off-Road Fabrication. The stock transfer case uses a single shift lever to move two shift rails inside the transfer case. One rail actuates high/low range and the other rail shifts from two-wheel drive to four-wheel drive. Possible combinations are 2-high, 4-high, and 4-low. However, there is no low-range option for two-wheel drive. Installation of a twin-stick kit provides you with one shifter to control each of the gearing and drive functions separately. With a lever shift this allows you to go from four-wheel drive to two-wheel drive in low range. This is especially useful for 'wheelers who run hard lockers in the front axle and find it hard to turn sharply when the front locker is engaged.

A unique approach to overcoming the bulky stock crossmember is this crossmember/skidplate combo from Front Range Off Road Fabrication. It requires minor welding for installation but offers clearance gains of up to 3 inches, plus firmer mounting of the entire drivetrain to reduce the habitual tearing of stock motor mounts under extreme use.

Adding lower gears and bigger tires is a natural progression to building a bigger and badder trail Toyota. However, getting a little extra ground clearance under your truck is always a good thing as well. We can even do it without adding more lift.

Toyota builds lots of its structural members from sheetmetal stampings that provide excellent strength with relatively light weight. Such is the case with the stamped and welded transfer case crossmember. Although strong, it is bulky and constitutes a low point under the frame. An easy way to gain ground clearance here is to use a replacement crossmember that provides sufficient beef without the thickness. A gain of nearly two inches in ground clearance can be had by building your own crossmember or purchasing one from one of the suppliers listed here. For belly clearance, it's almost like adding a four-inch-taller tire.

Whatever you're 'wheeling, you'll find Toyota transfer cases to be stout and reliable performers. With the wide availability of aftermarket beef-up parts and a number of stock interchange options, you can set up your truck or 4Runner to tackle any four-wheeling you may want to do.

For And Against
This table summarizes the pros and cons to using either of the two methods of gaining lower transfer case gearing.

Dual-Case Setup
Pros:
- Three transfer case ratios
- Improved front driveshaft angle
- Combines with 4.7:1 gears for the ultimate low-range
Cons:
- Requires driveshaft modifications
- Requires floorboard modifications
- Slight increase in driveline slop

Low-Gear Reduction
Pros:
- No other modifications required
- Preserves original drivetrain setup
Cons:
- Cannot pick "stock" low-range

Ratio Gains
The table below quickly summariezes the gain in the overall final-drive ration that can be gained through the use of reduction gearsets and/or dual-case conversions. Here the table assumes a common aftermarket 4.88:1 axle ratio and a 3.95:1 First gear (Toyota five-speed manual) ratio.

Transfer Case SetupTransfer Case RatioFinalDrive Ratio
Stock2.28:144:1
Replacement Gears4.70:191:1
Dual Cases (stock gears)5.20:1100:1
Ultimate Dual Cases10.70:1207:1
Marlin's Dual Ultimate Overkill22.10:1426:1
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Toyota 4.7 Transfer Case Re-Gear Tutorial

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