COGM-B1DX ProFit Combo Kit, 1955-57 Tri-5 Chevy, For 81 OD

Name: COGM-B1DX ProFit Combo Kit, 1955-57 Tri-5 Chevy, For 81 OD
Brand: AMERICAN POWERTRAIN
SKU: 632-COGM-B1DX
Price: 4080.25 USD
Availability: InStock

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Ships on 09/17/2026

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1955-57 Tri-5 Chevy
For 81 OD

Pro-Fit Combo Kit Is Designed for 1955-57 Tri-5 Chevy .81 OD, Providing a Clean Solution for Transmission Installation, Conversion, or Service Needs.
American Powertrain COGM-B1DX Features:
For Electronic Speedometer or Fuel Injection Ecu Reverse Light Wiring Mount Pilot Bearing Shift Knob
American Powertrain COGM-B1DX Notes:
Tremec TKX TCET17722- 600ft-Lb Constant Load Rated, 2.87 1st, 1.89 2nd, 1.28 3rd, 1.00 4th, 5th .81OD Bench or Bucket Compatible Adjustable Shifter Mechanism. X-Factor Cross Member Driveshaft Slip Yoke Mechanical Speedometer Conversion Vss Wiring Harness - for Electronic Speedometer or Fuel Injection Ecu Reverse Light Wiring Mount Pilot Bearing Shift Knob - White W/Black 5-Speed Pattern Hardware, Warranty and Instructions Compatible with 4-Speed Bell Housing. Requires 26-Spline Clutch Disc (not Included)
Tremec TKX TCET17722- 600ft-Lb Constant Load Rated, 2.87 1st, 1.89 2nd, 1.28 3rd, 1.00 4th, 5th .81OD Bench or Bucket Compatible Adjustable Shifter Mechanism. X-Factor Cross Member Driveshaft Slip Yoke Mechanical Speedometer Conversion Vss Wiring Harness
White W/Black 5-Speed Pattern Hardware, Warranty and Instructions Compatible with 4-Speed Bell Housing. Requires 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

Weight149.0 PG

Part CategoryPerformance Parts

Part FitmentDirect Fit

Vendor Part NumberCOGM-B1DX

Package Qty1

Package TypeEA