American Powertrain Pro-FIT TKX 17805 Transmission Combo Kit .81 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 17805 Transmission Combo Kit with .81 Overdrive for 1968-1972 Chevy Chevelles and El Caminos.
The Pro-Fit TKX kit (COGM-A2FX) is the perfect performance upgrade for 1968-1972 Chevy Chevelle or El Camino. It boasts the powerful Tremec TKX 17805 transmission and an OE four-speed shift position. This transmission handles a continuous load of 600 ft-lbs with no issues. The different gear ratios ensure efficient shift and reliability. This kit delivers unmatched road dynamism and reliability.
Features and Benefits:
- .81 OD
- Tremec TKX 17805 transmission
- 600 ft-lbs constant load rating
- Gear ratios: 2.87 (1st), 1.89 (2nd), 1.28 (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
This complete kit includes everything needed to overhaul your drivetrain. The AP Revolution offset shifter mechanism aligns with the OE 4-speed shift position for seamless installation. Your classic Chevy will boast improved torque and horsepower capabilities. The light wiring harness is weather-sealed for extra durability.
Vehicle Fitment:
- 1968-1972 Chevy Chevelle
- 1968-1972 Chevy El Camino
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,