Chevy SBC 350 6.250" Internal SFI-Rated Fluid Damper Harmonic Balancer These mounting blocks keep your

These mounting blocks keep your starter secured and properly adjusted

An engine with a 4340 billet steel crankshaft will rev faster and cleaner due to the different harmonics produced from the high grade material

These heavy-duty bearing retainer plates are precision-engineered and manufactured out of heavier steel than stock to ensure that they do their job

Speedmaster Stainless steel rollers are manufactured from heat-treated stainless steel and alloy steel tip rollers

true-roller chains teamed up with billet steel crank and cam sprockets

Chevy SBC 350 6.250" Internal SFI-Rated Fluid Damper Harmonic Balancer These mounting blocks keep yourSpeedmaster harmonic balancers are crafted from high quality steel and feature a tuned elastomer for optimal engine performance. They include a strong bonding process, easy to read timing marks, and an advanced design to absorb engine vibrations, extending the life of the crankshaft and bearings for enhanced power and torque.