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2RZ/3RZ-FE - to - R-series Transmission Conversion
2RZ/3RZ-FE Conversion Bellhousing

Starting in July of 2004, we did our first 3RZ Engine Swap into a 1981 Shortbed Hilux pickup. Since then we have done four 3RZ Engine conversions into Hilux trucks including one into Marlin's 1980 Crawler Truck:

Marlins 3RZ Conversion
Marlin's 3RZ-FE Engine Conversion in his 1980 Crawler Truck

Knowing that the 3RZ-FE develops as much torque as the R150F-equipped 3.0 liter 3VZ-E Hilux, Marlin felt it only natural to run a R-series transmission behind a "RZ" Engine.

The World's First RZ Conversion Bellhousing

Marlin Crawler, Inc. is proud to offer the world's first production "RZ" to R-series transmission conversion bellhousing. This bellhousing mounts to any 2RZ/3RZ engine block and to any R-series transmission. Our kits are designed specifically for the 1986-87 R151F 5spd, the 1988-95 R150F 5spd, and the 1995-2005 R150F 5spd transmission, however the bellhousing should also fit other R-series transmissions such as a Supra R154 2WD 5spd.

Marlin's 1,372:1 Triple Transfercase Setup

Pictured above is Marlin's R151F 5.15:1 Transmission with his 23-spline Triple Transfer case setup amounting in a 1,372:1 First Gear Crawl Ratio. This is the very first bellhousing produced. What is significiant about using a R-series transmission is that it uses a large diameter 23-spline output coupling, unlike the stock W59 5spd Tacoma/4Runner 2RZ/3RZ that uses a 26-spline output coupling. When combining our gear and chain drive adapter kits, newly achieved combinations behind a 2RZ or 3RZ include:


  • 1986-87 R151F "Turbo" 5spd
    • VF1A 23-spline Gear Drive T/case, Right Hand Front Output
  • 1988-95 R150F 5spd
  • 1995-2005 R150F 5spd
  • As you can see from the above list, the possibilities are quite vast.

    Click on an above image for a larger picture.

    What is included in the kit?

    Marlin designed this bellhousing to accomadate all factory Toyota parts such as the stock dust shield, stock clutch fork and pivot bolt, stock release bearing and retainer clips, stock slave cylinder, and stock rubber boots. However, since most wrecking yards in our experience leave out many parts, we include all of the parts you'll need except for the tranny!
    Each kit includes the following:

    • RZ-block - to - R-series transmission Bellhousing
    • 9 mounting bolts to attach bellhousing to your R-series transmission
    • Lower Dust Shield & 4 mounting bolts
    • 1995-2005 R150F: Additional spacers are included to accomadate the longer input shaft.
    • All parts including Bellhousing made in the USA
    • Features Air Vents for Air Cooled performance
    1986-87 R151F
    "Turbo" 5spd
    MC-3RZ01 $399
    1988-95 R150F
    V6 5spd
    MC-3RZ02 $399
    1995-2005 R150F
    V6 5spd
    MC-3RZ03 $499

    All Content Copyright Marlin Crawler 2007. All products intended for off-road use. All products guaranteed for
    one year against defects in materials and labor. Prices and products subject to change without notice.