TREMEC 4x2 TR-4050 Pro-Fit HD manual transmission kit, #PFGM-40005

The TREMEC 4x2 TR-4050 Pro-Fit HD manual transmission kit, #PFGM-40005, from American Powertrain, is a 5-speed manual transmission kit designed for RWD 1988-98 Chevy/GMC OBS light- and medium-duty trucks. The kit includes a short throw White Lightning Shifter, a crossmember adapter bracket, bell housing, hydraulic bearing, pilot bearing, reverse light harness, shifter knob, and all the installation hardware. The crossmember adapter bracket functions with the original factory crossmember, and the kit can be used with a stock pedal and a complete hydraulic pedal conversion system for OBS. With a torque rating of 600 lb.-ft. and constant-mesh helical gears with ratios of 6.16, 3.11, 1.71, 1, .76 od. Rev 6.03, the kit can increase fuel economy by 30%, the company stated. Constructed of diecast aluminum alloy, the housing is weight-saving yet durable and includes needle bearings under the gears to reduce friction and noise.

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