PRO/RACE Pro Street Harmonic Balancer - 6.40" OD - Iron - 50 oz. External Balance - Small Block Ford H777C05L 500" Valve Guide Cutter from

500" Valve Guide Cutter from COMP Cams will allow the engine builder to machine the cylinder head to the proper size for your spring

Powerful Exterior Sound

Heavy gauge stamped steel construction

00-inch stroke crankshaft

PRO/RACE Pro Street Harmonic Balancer - 6.40" OD - Iron - 50 oz. External Balance - Small Block Ford H777C05L 500" Valve Guide Cutter fromProduct Description: Harmonic Balancer Pro Street 6. 40 in OD Iron Natural 50 oz External Balance Small Block Ford Sold Individually Founded by renowned Australian drag racer Graham Withers , Pro Race Performance has produced performance engine components for more than 35 years. Pro Race is recognized for their All Steel line of crankshaft dampers, initially offered for the Holden 308 V8, and now offers high performance racing dampers for a wide range