Description
ProTru by Wiseco Chevy Big Block Dome Piston Forged 4.310" Bore 1 16 x 1 16 x 3 16" Ring Grooves Plus 21 cc H774009XL Ability to calibrate O2 sensor WEI7155 Ability to calibrate O2 sensor for maximum accuracy 1967 1982 Chevrolet C10 Suburban Chevrolet Big Block 454Wiseco Pro Tru is a division of Wiseco specializing pistons and piston rings for price conscious engine builders 1 16 x 1 16 x 3 16 in Ring Grooves