M57 Steel Piston and Connecting Rod Package

In the 500+whp realm, the factory M57 cast aluminum pistons and powder forged cracked cap rods start to become a wildcard. Billet or forged aluminum pistons would have been a simple solution to handle the power short term, they cannot be made with a steel top ring land and consequently will only live 30-50kmi on the street. A steel piston will outlive all other internal engine components. Viewing the opportunity for leaps and bounds to be taken instead of simple steps, WPI is bringing the best possible bang for the buck to the market. The first few sets are nearing the final stages of production and will be running in engines as quickly as possible after that! To help reduce side thrust loads, the connecting rods were lengthened by 10mm center to center which reduces maximum rod angle by just shy of 1 degree. The wristpin was also dropped from 30mm to .990" which is the stanard big block Chevy size used in top fuel dragsters. The production connecting rods will be made by Molnar Techno