1.400" Od. 1.060" Id. 10 Degree 11/32 Chromoly Steel Valve Spring Retainers Couple this Hi-Ram intake with

Couple this Hi-Ram intake with the high flowing LS1 style cylinder heads has outstanding potential for naturally aspirated and forced induction applications

Speedmaster manufactures these master cylinders from quality materials to ensure proper fitment

Made from 5051 aircraft aluminum alloy

The larger needle bearing fulcrum can withstand valve spring loads up to 600lbs

Designed for C4 transmissions in competitive environments where RPM levels approach or exceed 8

1.400" Od. 1.060" Id. 10 Degree 11/32 Chromoly Steel Valve Spring Retainers Couple this Hi-Ram intake withSpeedmaster chromoly steel retainers are made from 4140 chromoly and then heat treated for long life. These retainers are available in a variety of lock angles and sizes to suit your needs, from performance street to competition use.