Product Description:
Free Quote Form
Hawks Motorsports offers our clients this 1963-1972 Chevrolet GMC C-Series Pickup TREMEC TKX 5-Speed Conversion Kit | C-SERIES-TKX-6372. Designed for classic truck enthusiasts looking to modernize their drivetrain, this Silver Sport Transmissions RestoFit® conversion kit provides improved performance, better highway cruising, and the reliability of a modern TREMEC 5-speed transmission.
The TREMEC TKX 5-Speed is one of the most compact and versatile manual overdrive transmissions available for classic truck applications. With a 600 lb-ft torque capacity, 7,500 RPM shift capability, and multiple gear ratio options, the TKX delivers the perfect balance of strength, street manners, and modern drivability.
This complete RestoFit™ kit is engineered specifically for 1963-1972 Chevrolet and GMC C-Series trucks, providing the components needed for a clean installation while maintaining proper driveline alignment and factory-style appearance. Complete the Hawks Motorsports transmission conversion quote form before ordering so our team can verify your vehicle configuration and ensure the correct components are selected.
FEATURES:
- Fits 1963-1972 Chevrolet and GMC C-Series Pickup Trucks
- TREMEC TKX 5-Speed Overdrive Manual Transmission
- Compact rounded case design for reduced or eliminated tunnel cutting
- Rated for up to 600 lb-ft of torque
- Capable of 7,500 RPM shifts
- 30-50% increase in fuel economy potential
- Low RPM highway cruising
- Reduced noise, vibration, and harshness (NVH)
- Compatible with mechanical or hydraulic clutch actuation
- Designed for everyday street use with strong performance capability
TKX GEAR RATIOS:
- Wide Ratio: 3.27 / 1.98 / 1.34 / 1.00 / 0.72
- Close Ratio: 2.87 / 1.89 / 1.28 / 1.00 / 0.68 OR 0.81
KIT INCLUDES:
- TREMEC TKX 5-Speed Overdrive Transmission
- Pilot Bearing - Heavy-duty needle roller design with lubrication seal
- McLeod Flywheel
- McLeod Clutch
- STX Shifter
- Shifter Boot and Trim Ring
- Shifter Handle
- Shifter Knob
- Bellhousing
- Hydraulic Clutch Actuator
- Transmission Fluid
- Installation Hardware - Complete labeled hardware package
- Rubber isolator mount for vibration control
- Reverse light connector with waterproof connection
- Crossmember
- Driveshaft and Slip Yoke - Lightweight steel driveshaft, dynamically balanced with premium solid U-joints
- Detailed installation instructions
- Lifetime technical support
- Market-leading warranty
WHY UPGRADE TO A TREMEC TKX 5-SPEED?
The TREMEC TKX is an ideal upgrade for classic Chevy and GMC trucks that need modern highway capability without sacrificing the driving experience of a manual transmission. The compact design, overdrive gearing, and strong torque capacity make it an excellent choice for street trucks, restomods, and performance builds.
FITMENT:
| Year | Make | Model |
|---|---|---|
| 1963-1972 | Chevrolet | C-Series Pickup |
| 1963-1972 | GMC | C-Series Pickup |
INSTALLATION NOTES:
- Vehicle-specific conversion kit; verify drivetrain configuration before ordering.
- Driveshafts are no longer included with all orders and may be purchased separately.
- Additional components may be required depending on engine, clutch, and drivetrain configuration.
- Professional installation is recommended.
