88-98 CHEVY/GMC TRUCKS OBS 2WD HD 5-Speed Kit TR-4050

SKU: PFGM-40005 Categories: ,

PRO-FIT HD 2WD 5-Speed Kits 

Great for towing or heavy duty use.

Request A Quote


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


Introducing Pro-Fit HD

American Powertrain Pro-Fit HD 2WD kits for 88-98 Chevy/GMC 

Featuring the TREMEC TR-4050 5-Speed. Great for heavy duty use or towing!  2WD edition 

  • Similar to the NV4500. Direct replacement 
  • 600 lb/ft of torque capacity 
  • Aggressive 6.16 “Granny” Gear 1st gear but with economical .76 5th gear
  • High-contact, constant mesh, helical gears for maximum strength
  • Die-cast aluminum alloy housing saves weight while offering considerable rigidity
  • The multiple rail, internal shifter provides excellent shift feel and performance
  • Tapered bearing on input, main, and counter shafts provide excellent internal stability
  • Needle bearings under gears reduce friction and noise output
  • Fully synchronized
  • Advanced synchronizer technology promotes smoother shifting and reduced shift effort
  • 5th gear synchronizer mounted to the countershaft to improve NVH in overdrive
  • 3.67 qt oil capacity
  • Heavy Duty 1480 output yoke 

Gear ratios: 6.16, 3.11, 1.71, 1, .76 od. rev 6.03
– 10 spline input shaft / Output 1480 yoke
– Torque rating 600lb-ft
 – A 6-bolt PTO mount location 6 bolt circle output flange.
–  NV4500 bolt pattern



  • Torque Capacity  –  600 lb.ft  /  813 n/m 
  • Oil Capacity – 3.7 QT  /  3.5ltr.
  • Weighs 164 lbs.  /  74kg
  • .590″ Pilot diameter
  • 1.125″ Input shaft diameter, 10-spline, 6.5″ length

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 temperature.

Kit includes:

White Lightning Shifter for TR4050

Crossmember adapter bracket works with original factory crossmember

Bellhousing for 4050

Hydraulic bearing

Pilot Bearing – Stainless rollers, grease pre-pak
Reverse Light Harness – Weatherseal
Shifter Knob
Hardware, Instructions, Warranty

Got an LS swap? We can make it easy. 

Hydraulic clutch recommended. Can use a stock pedal. Complete Hydraulic System for OBS and pedal assembly available. 

Weight: lbs

Dimensions: W" x H" x L"

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