PAC 1222X RPM Series Valve Springs

Valve Springs


PAC 1222X RPM Series Valve Springs
RPM Series Dual LS Engine Spring
Aftermarket Cylinder Heads Upgrade Spring
PAC Racing Springs developed this new process using all the latest advancements from our circle
track and drag racing successes. We have applied this new method to great designs that will allow
for a performance increase that exceeds all demands. If you don’t see your application with the
RPM process, please contact us for available options.

O.D. Outer (in) 1.280
I.D. Outer (in) 0.925
Damper No
ID Inner (in) .655
Install Height (Valve Closed) (in) 180 @ 1.800
Open Load (Valve Open) (LB) 480 @ 1.100
Spring Rate 425
Max Coil Bind (in) 1.055
Max Lift (in) .700

SKU: 1129

Price: $339.99
Sale Price: $319.99
Spring Seats:

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