| PAC Racing RPM Series valve springs were developed using all of the latest advancements from Circle Track and drag racing successes. This valuable, real-life research has been applied to new designs, which allow for a performance increase that exceeds all demands. The springs are made from quality materials and are available in different diameters and pressures to suit your specific camshaft profile.
SPECS:
PART NUMBER:PAC-1237X
MPN:PAC-1237X
Valve Springs
OUTER SPRING DIAMETER (IN.):1.274
OUTER SPRING I.D. (IN.):0.900INNER SPRING I.D. (IN.):0.630
MAX LIFT (IN.):0.700
LOAD (LBS) @ INSTALLED HEIGHT (IN):200 @ 1.800
OPEN LOAD (LBS) @ OPEN HEIGHT (IN.):585 @ 1.000
COIL BIND (IN.):1.045
RATE (LBS/IN.SQ):550
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