Description
American Powertrain Pro-Fit kits for 1978-88 GM G-body
Choose either TREMEC TKX 5 or Magnum 6-speed.
30-50% increase in fuel economy
Low RPM cruising for greatly reduced driver fatigue and an improved highway driving experience.
Reduced engine wear leading to longer engine life
Cooler engine operating temperatures
TKK Gear Ratios
Wide Ratio – 3.27, 1.98, 1.34, 1.00, 0.68
Close Ratio – 2.87, 1.89, 1.28, 1.00, 0.64 OR 0.82
T56 Magnum Gear Ratios
Close Ratio 2.66, 1.78, 1.30, 1.00, 0.80, 0.63
Wide Ratio 2.97, 2.10, 1.46, 1.00, 0.74, 0.50
Kit includes:
AP Revolution Shifter Mechanism locates shifter – will fit bench or bucket seats
Seamless DOM Driveshaft Assembly – Race Balanced, Solid U-Joints
Driveshaft Slip Yoke – Cryogenically hardened steel
Adjustable crossmember
Transmission Mount – Polyurethane
Pilot Bearing – Stainless rollers, grease pre-pak
Reverse Light Harness – Weatherseal
Speedometer Conversion Electronic
Shifter Knob
Hardware, Instructions, Warranty
Tunnel modifications required
Hydraulic clutch recommended. G-body bolt in kit available here
