ProTru by Wiseco Pro Tru Street Series Forged Piston Set - 4.155" Bore - 1/16 x 1/16 x 3/16" Ring Grooves - Minus 5 cc - Coated Skirt - SB Chevy (Set of 8) HASZ20PP The Hybrid Pro Lite's light-weight

The Hybrid Pro Lite's light-weight design and carbon fiber construction provides maximum comfort and maneuverability with superior strength

ETHANOL and Gasohol fuels

Not compatible with 4L6X transmissions from model year 1995 or before due to year-by-year changes in converter lockup and downshift strategy

Electric choke ONLY) Use #8032 throttle bracket

1972-1974 Pontiac Grandville

ProTru by Wiseco Pro Tru Street Series Forged Piston Set - 4.155" Bore - 1/16 x 1/16 x 3/16" Ring Grooves - Minus 5 cc - Coated Skirt - SB Chevy (Set of 8) HASZ20PP The Hybrid Pro Lite's light-weightChevrolet Small BlockWiseco Pro Tru is a division of Wiseco specializing pistons and piston rings for price conscious engine builders. They offer complete kits to fit a wide range of engines. Manufactured by Wiseco Performance Products, ProTru Forged Pistons are affordable with features usually found only in more expensive pistons. Product Description: Pistons and Rings Pro Tru Street Series Forged 4. 155 in Bore 1 16 x 1 16 x 3 16 in Ring Grooves