Comp Cams 4742-100 Valve Spring Shims
4742-100 Spring Shim, EB .030 X 1.250"
Diameter Outside (in.)
Single Outer; Valve Springs; 1.230 Outer With Damper; 16
Specifications: * Outside diameter: 1.230 in. with damper * Inside
diameter: .876 in. * Seat load: 91 lbs. at 1.700 in. * Open load:
229 lbs. at 1.250 in. * Coil bind: 1.150 in. * Rate: 308 lbs.
Recommended parts: * Steel retainer: CCA-742-16 or CCA-750-16 *
Titanium retainer: CCA-728-16 * Shims: CCA-4753
Can your current valve springs handle the high spring pressures
that are common in racing today Not as well as these Competition
Cams pacaloy valve springs can. They e manufactured from a new high
tech proprietary alloy thats able to maintain high pressure loads
up to five times longer than other springs.
( .880 ID. )