Comp Cams Single Valve Spring - 300 lb. - 1.033 in Coil Bind - 1.650 in OD (Set of 16) COM12-515-5 Merlin and Rocket racing blocksMust

Merlin and Rocket racing blocksMust be used with an MSD Ignition ControlSupplied with an HEI style distributor cap and rotor (accepts Cap-A-Dapts)O-ring seals can be added to modified blocks to improve oil pressure controlSpecial oil tract improves lubrication to the distributor and cam gearNylon pads ensure smooth operation of the advance weightsAdvance weight pins are staked and tig welded to the plateMechanical advance assembly can be locked out for crank trigger systemsAdvance plate and weights are fine blanked from chrome moly steel and QPQ coated for friction reductionPolished steel shaft is QPQ coated and guided by a sealed ball bearing and long sintered bushingMaintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm rangeAdjustable slip collar mounting flange provides up to 3” of adjustmentCNC machined billet aluminum housing and Dupont Rynite baseNo CARB Exemption Order Number

By virtue of soaking into the metal to disperse carbon build-up

polycarbonate replacement blades

designed for use with Motorola twin-pin radio models

ΓÇó OEM spec flanged head hardware included to match your factory LS engine hardware

Comp Cams Single Valve Spring - 300 lb. - 1.033 in Coil Bind - 1.650 in OD (Set of 16) COM12-515-5 Merlin and Rocket racing blocksMustCOMP Cams new 26903 single valve springs are a product of innovative design and superior craftsmanship. Engineered with state of the art Techniques using premium wire, they redefine reliability and consistency in the performance automotive aftermarket. The 26903 valve springs are an excellent choice for many flat tappet cams in Applications with limited installed height, anywhere from 1. 500" to 1. 700", depending on the lift. They easily fit numerous