American Powertrain Pro-FIT TKX Transmission Combo Kit .72 OD Chevy Chevelle/ El Camino 1968-1972
Highlights
- Nostalgic Shifting Experience
- Power-Filled Transformation
- Seamless 5-Speed Conversion
- Precision Torque Handling
American Powertrain Pro-FIT TKX Transmission Combo Kit with .72 Overdrive for 1968-1972 Chevy Chevelles and El Caminos.
This kit (COGM-A2BX) will revolutionize the driving experience of your 1964-1967 Chevy Chevelle or El Camino. It is built for seamless integration with the Tremec TKX TCET18083 transmission. The kit ensures a powerful cruise and can handle up to 600 ft-lbs of consistent load. This solution utilizes modern engineering to blend form with function.
Features and Benefits:
- .72 OD
- Tremec TKX TCET18083 transmission
- 600 ft-lbs constant load rating
- Gear ratios: 3.27 (1st), 1.98 (2nd), 1.34 (3rd), and 1.00 (4th and 5th)
- AP Revolution offset shifter mechanism
- OE 4-speed shift position
- Driveshaft slip yoke included
- Mechanical speedometer conversion
- Cable adapter for original equipment compatibility
- VSS wiring harness for electronic speedometers
- Weather-sealed reverse light wiring harness
- Low-profile poly mount
- Pre-packed roller steel pilot bearing
- White shift knob with black 5-speed pattern
- Includes hardware, warranty, and installation instructions
- Utilizes factory cross member
The driveshaft slip yoke facilitates an efficient connection with existing setups. Enjoy effortless conversion using the mechanical speedometer adapter for original equipment continuity or further modernize with a VSS wiring harness. Everything needed for installation is bundled together in one neat package.
Vehicle Fitment:
- 1968-1972 Chevy Chevelle A-Body
- 1968-1972 Chevy El Camino A-Body
Please Note: Compatible with 4-speed bell housing. Requires 26-spline clutch disc (not included).
California Residents: Proposition 65 Warning
Related Categories: Drivetrain, Restomod

Vehicle Fitment
This product will fit the following Chevelle years:
- 1968,
- 1969,
- 1970,
- 1971,
- 1972,
This product will fit the following El Camino years:
- 1968,
- 1969,
- 1970,
- 1971,
- 1972,