ProTru by Wiseco 23 Degree Flat Top Forged Piston and Ring Kit - 4.030 in Bore - 1/16 x 1/16 x 3/16 in Ring Grooves - Minus 5.00 cc - Small Block Chevy PTS506A3 30300080 MSD's Ready-to-Run Pro-Billet Distributors for

MSD's Ready-to-Run Pro-Billet Distributors for Chrysler engines are the perfect upgrade from breaker points or weak electronic ignitions

437 in Bolt Circle

and features all aluminum components for additional weight savings

Put Nature firmly in its place

Requires Use Of 91 Octane Fuel/180 Degree Thermostat/Free Flow Exhaust ECM Located Under Hood

ProTru by Wiseco 23 Degree Flat Top Forged Piston and Ring Kit - 4.030 in Bore - 1/16 x 1/16 x 3/16 in Ring Grooves - Minus 5.00 cc - Small Block Chevy PTS506A3 30300080 MSD's Ready-to-Run Pro-Billet Distributors forChevrolet 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: Piston and Ring 23 Degree Flat Top Forged 4. 030 in Bore 1 16 x 1 16 x 3 16 in Ring Grooves Minus 5.