Speed-Pro File Fit Plasma Moly Piston Ring Set - 4.000" Bore (+.065") - Top Ring: 5/64", 2nd Ring: 5/64", Oil Ring: 3/16", Oil Tension Ring: Standard Tire Pressure Gauge Holder Easiest Unit To Double Shift

Easiest Unit To Double Shift w/Air/CO2/Elctrc Mech

and are designed for an exact port match with Dougs headers

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INSTALLATION NOTE: These heads require Ram Air IV (round port) style exhaust manifolds or headers and Edelbrock head bolt kit #8549

Speed-Pro File Fit Plasma Moly Piston Ring Set - 4.000" Bore (+.065") - Top Ring: 5/64", 2nd Ring: 5/64", Oil Ring: 3/16", Oil Tension Ring: Standard Tire Pressure Gauge Holder Easiest Unit To Double ShiftSpeed Pro designs and engineers pistons to meet the most demanding street performance and racing conditions. In combination, we draw upon more than 100 years of Speed Pro engine mastery to enhance the piston ring and its seal. Our Speed Pro brand is recognized for being a winner in every form of racing, and is the proven horsepower leader in oval track and drag racing. Hell Fire Rings: Speed Pro Hell Fire rings, manufactured from a specially hardened