Speed Pro Speed Pro Piston Hypereutectic 4.000" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Coated Skirt Headsets and 375 automatic transmissions with

and 375 automatic transmissions with a reverse valve body

This 1993-1997 GM LT1 BBK Performance Under-drive Crank Pulley is designed as direct bolt on replacement for the current factory pulley and will retain full cooling and charging characteristics

O- rings included

Comes with left and right extension

Speed Pro Speed Pro Piston Hypereutectic 4.000" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Coated Skirt Headsets and 375 automatic transmissions withProduct Description: Piston Speed Pro Hypereutectic 4. 000 in Bore 5 64 x 5 64 x 3 16 in Ring Grooves Minus 6. 90 cc Coated Skirt Small Block Chevy Set of 8 From pistons to engine bearing components, Speed Pro offers an array of performance engine parts. You can rely on Speed Pro for industry leading performance engine technologies, from cutting edge Digital Diamond Profiled pistons to A Series bearings. They are engine components performance