ARP Cylinder Head Stud Kit - Hex Nuts - Chromoly - Black Oxide - Ford Inline-6 Dzus Fastener Insert Plate 1967-1971 GMC C25/C2500 Suburban Can Drive OEM Ignition 93507 Size:13 SCET145750

ARP Cylinder Head Stud Kit Hex Nuts Chromoly Black Oxide Ford Inline 6 Dzus Fastener Insert Plate 1967 1971 GMC C25 C2500 Suburban Can Drive OEM Ignition 93507 Size:13 SCET145750 1967 1971 GMC C25 C2500 Suburban 5 amp single spark through high rpmEasy to adjust mechanical advance with supplied springs and stop bushingsVacuum advance canister for improved economy (can be locked out)CNC machined billet aluminum housing and billet aluminum base for long life and great looksMaintenance free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm rangePolished steel shaft is QPQ coated and guided by a sealed ball bearing providing smooth operationAdvance plate and weights are fine blanked from chrome moly steel and QPQ coated for friction reductionMechanical advance assembly can be locked out for crank trigger systemsAdvance weight pins are staked and tig welded to the plate for superior strength