COMP Cams Spring Seat Cups Eb 1.740The older style standard shims will not hold up to the extreme spring pressures and high RPM found in racing engines being built today. COMP Cams offers a simple but effective solution to this problem a thin, hardened steel alloy seat which will not only protect the head and shim but also locate and hold the spring in place. Previously, this part has been available only in a cup form with the retaining portion being on the outside of the part. This

with 190-215cc head

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7 ratio rockers for BBC w/ Brodix 2 Xtra heads

2006-2007 GMC Sierra 1500 SL 1999-2007 GMC Sierra 1500 SLE 1999-2007 GMC Sierra 1500 SLT 2002-2007 GMC Sierra 1500 WT

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Strong mid-range and top end

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Use the remote damping adjusters for easy access to adjustment knob

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