ProFit TKX 5-Speed Kit for 1955-57 Chevy Car or Truck

SKU: PFGM-20014 Category:

ProFit TKX Installation Kit for 1955-57 Chevy Car or Truck


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If you don't know what you need, call our technical sales staff at 931-646-4836



American Powertrain Pro-Fit TKX kit for 1955-57 Chevy Tri-Fives

  • 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
  • Reduced NVH (noise – vibration – harshness)

Featuring the All New TREMEC TKX!

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 5th

This kit can use a stock 3 or 4-speed bellhousing. Some 3-speed bell housings might require modifications to fit. Please let us know if you intend to re-use it. We suggest a new 621 Muncie bell to aid in easy installation. 
Note: You need to will select a clutch plate to match the splines for the TREMEC. You can reuse you stock flywheel and pressure plate. Or call us to help you select a complete clutch package.

Kit includes:

TKX 5-speed with streamlined case. 600 ft/lbs of torque capacity. For a no cut fit!

AP Revolution Shifter Mechanism for custom shifter location for Bench or Bucket seats 
Seamless DOM Driveshaft Assembly – Race Balanced, Solid U-Joints
Driveshaft Slip Yoke – Cryogenically hardened steel
X-Factor adjustable crossmember
Transmission Mount – Polyurethane
Pilot Bearing – Stainless rollers, grease pre-pak
Reverse Light Harness – Weatherseal
Speedometer Conversion – Mechanical or Electronic
Shifter Knob
Hardware, Instructions, Warranty


Optional Parts:

  • Hydramax Hydraulic Clutch
  • Bell housing
  • Flywheel
  • Shifter
  • Optional White Lightning shifter shown in product image

Weight: 43.0000 lbs

Dimensions: W8.0000" x H32.0000" x L8.0000"

If you don't know what you need, call our technical sales staff at 931-646-4836