Product Description:
Free Quote Form
Hawks Motorsports offers our clients this 1963-1972 Chevrolet GMC C-Series Pickup TREMEC Magnum 6-Speed Conversion Kit | C-SERIES-MAGNUM-6372. Designed for classic truck owners who want modern performance without sacrificing the original character of their vehicle, this Silver Sport Transmissions RestoFit® conversion kit delivers improved highway performance, reduced RPM, and increased driving comfort.
The TREMEC T56 Magnum 6-Speed provides a modern double overdrive solution capable of handling up to 700 lb-ft of torque while offering smooth shifting, improved fuel economy, and reduced engine wear. This kit is ideal for street-driven classic Chevy and GMC C-Series trucks equipped with higher horsepower engines that require a strong and reliable manual transmission upgrade.
This RestoFit™ conversion kit includes the components needed to upgrade your classic truck to a modern TREMEC Magnum 6-Speed while maintaining proper driveline geometry and factory-style functionality. Complete the Hawks Motorsports transmission conversion quote form before ordering so our team can verify your vehicle setup and ensure the correct components are selected for your build.
FEATURES:
- Fits 1963-1972 Chevrolet and GMC C-Series Pickup Trucks
- TREMEC T56 Magnum 6-Speed Double Overdrive Transmission
- Rated for up to 700 lb-ft torque capacity
- Available in wide and close ratio configurations
- Gear Ratios:
- 2.66 / 1.78 / 1.30 / 1.00 / 0.80 / 0.63
- 2.97 / 2.10 / 1.46 / 1.00 / 0.80 / 0.63
- 30-50% increase in fuel economy potential
- Low RPM highway cruising
- Reduced engine wear and operating temperatures
- Reduced noise, vibration, and harshness (NVH)
- Friction-lined synchronizer blocker rings for smooth high RPM shifts
KIT INCLUDES:
- TREMEC T56 Magnum 6-Speed Transmission
- Crossmember - CAD-designed lightweight and rigid construction
- Driveshaft and Slip Yoke - Custom steel driveshaft, dynamically balanced with premium solid U-joints
- Speedometer Connection - Compatible with mechanical and electronic speedometers
- Calibrated speedometer cable or electronic speedometer connector
- Reverse light connector
- Pilot bearing - Heavy-duty needle roller design with lubrication seal
- Rubber isolator mount for vibration control
- Installation hardware
- Detailed installation instructions
- Lifetime technical support
WHY UPGRADE TO A TREMEC MAGNUM 6-SPEED?
The TREMEC Magnum 6-Speed is an excellent choice for classic Chevy and GMC trucks receiving modern engine upgrades or owners wanting improved highway manners. The additional overdrive gears allow for comfortable cruising speeds while keeping engine RPM lower, improving reliability and making long-distance driving more enjoyable.
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 chassis configuration.
- Professional installation is recommended.
