COGM-B1J ProFit Combo Kit, 1955-57 Tri-5 Chevy, For Wide Ratio

Name: COGM-B1J ProFit Combo Kit, 1955-57 Tri-5 Chevy, For Wide Ratio
Brand: AMERICAN POWERTRAIN
SKU: 632-COGM-B1J
Price: 4745.25 USD
Availability: InStock

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Ships on 09/14/2026

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1955-57 Tri-5 Chevy
For Wide Ratio

Pro-Fit Combo Kit Is Designed for 1955-57 Tri-5 Chevy Wide Ratio, Providing a Clean Solution for Transmission Installation, Conversion, or Service Needs.
American Powertrain COGM-B1J Features:
TUET11012 Tremec Magnum
700ft-Lb Constant Load Rated, 2.97 1st, .74 5th, .50 6th AP Revolution Offset Shifter Mechanism
For Electronic Speedometer or Fuel Injection Ecu Reverse Light Wiring Harness
Weatherpack Plug-N-Play Reverse Lock-Out Wiring Harness
Weatherpack Plug-N-Play Trans Mount Pilot Bearing
Roller Steel, Grease Pre-Pack (standard Chevy/Buick, LS and Pontiac/Olds Included) Shift Knob
American Powertrain COGM-B1J Notes:
TUET11012 Tremec Magnum - 700ft-Lb Constant Load Rated, 2.97 1st, .74 5th, .50 6th AP Revolution Offset Shifter Mechanism - Bench or Bucket Compatible Adjustable Shifter Mechanism. X-Factor Cross Member Driveshaft Slip Yoke Mechanical Speedometer Conversion - Cable Adapter Compatible with OE Cable Vss Wiring Harness - for Electronic Speedometer or Fuel Injection Ecu Reverse Light Wiring Harness - Weatherpack Plug-N-Play Reverse Lock-Out Wiring Harness - Weatherpack Plug-N-Play Trans Mount Pilot Bearing - Roller Steel, Grease Pre-Pack (standard Chevy/Buick, LS and Pontiac/Olds Included) Shift Knob - White W/Black 6-Speed Pattern Hardware, Warranty and Instructions Requires Bell Adapter or Engine Specific Bell Housing and 26-Spline Clutch Disc (not Included)
Bench or Bucket Compatible Adjustable Shifter Mechanism. X-Factor Cross Member Driveshaft Slip Yoke Mechanical Speedometer Conversion
Cable Adapter Compatible with OE Cable Vss Wiring Harness
White W/Black 6-Speed Pattern Hardware, Warranty and Instructions Requires Bell Adapter or Engine Specific Bell Housing and 26-Spline Clutch Disc (not Included)

American Powertrain ProFit Transmission Kits Deliver Perfect-Fit Modern Manual Transmission Swaps

American Powertrain ProFit Transmission Kits are engineered to simplify modern manual transmission conversions with vehicle-specific solutions designed for classic muscle cars, trucks, and hot rods. Built around popular TREMEC transmissions like the TKX and Magnum, ProFit Kits include the essential components needed for a clean, professional installation, including crossmembers, shifters, bellhousings, hydraulics, pedals, and mounting hardware. Designed for precise fitment and easier installation, these kits help eliminate guesswork while improving drivability, shifting performance, and cruising comfort. American Powertrain’s Made-in-USA craftsmanship, premium materials, and swap expertise make ProFit Kits a trusted choice for enthusiasts seeking reliable overdrive performance, smoother highway driving, and modern shifting feel in vintage vehicles.

Part TypeManual Transmission

Product LineAmerican Powertrain ProFit Transmission Kits

BrandAMERICAN POWERTRAIN

Package Height14.0

Package Width18.0

Package Length31.0

Weight179.0 PG

Part CategoryPerformance Parts

Part FitmentDirect Fit

Vendor Part NumberCOGM-B1J

Package Qty1

Package TypeEA