Works best for motors over 103- or with high-compression pop-up pistons
Combustion chamber provides a slightly higher than stock, but still manageable compression ratio in larger than stock engines
Large 2.000- intake and 1.605- exhaust valves maintain port velocity for good low and midrange response, but supply enough air for slightly larger engines to perform to their full potential
S&SĀ® High performance valve springs allow the installation of camshafts with up to .650- lift
Intake ports flow 264 CFM (Cubic Feet per Minute) compared to stock heads at 182 CFM
Includes heads and four long headbolts; and reuse four long OEM headbolts
Made in the USA
Must use S&S rocker boxes if S&S compression releases are used.
