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Speedmaster small block 427 c
leakproof seal
These zinc plated cooling pans from Speedmaster give you up to 15 percent cooler transmission temperatures
6" diameter ring gear
They're constructed of high-grade material and feature a shiny
1979-1993 Ford 5.0L Steel Serpentine 20% Underdrive Pulley Set Black Speedmaster small block 427 cSpeedmaster underdrive pulley kits are built from aircraft quality material andcomputer machined. By reducing the speed of the accessories, these underdrive pulleys free up an average of 8 15 horsepower , while retaining full cooling and charging characteristics. Most kits can be bolted on in less than 30 minutes.
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