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Ships within 48 hours · Estimated delivery Aug 20 - Aug 25
550-lb/in spring rate
Superior RFI / EMI suppression for applications with CD or electronic ignitions
10‚Å ∞ or 20‚Å ∞ of timing retard for quick starts
BedRug Mat With Existing Spray-In Liner
COMP Cams Ultra Pro Magnum Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.60 Ratio - Small Block Ford HSM61DE 550-lb/in spring rateThe Ultra Pro Magnum Roller Rocker Arms for Small Block Ford 289 302 and 351 Windsor applications not only live up to the lofty standards of the original Pro Magnums, but they also take stud mount rocker performance, stability and value to a whole new level. These rocker arms feature a 7 16" stud diameter and 1. 6 ratio. The 8650 chromemoly material and arched, web like design deliver increased strength and rigidity while still reducing the moment of
