ARP 185-4001 Head Stud Kit for Olds 455 ymm_81 the optional Akrapovič Sound Kit

the optional Akrapovič Sound Kit is available to control the exhaust valves at any time and allow the driver to choose the setting preferred

880 1963-1964

Both models feature a large diameter

and the tones can also be controlled from within the cockpit with addition of the optional Akrapovič Sound Kit

115˝ Knurl Length 0

ARP 185-4001 Head Stud Kit for Olds 455 ymm_81 the optional Akrapovič Sound KitIt is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all out competition powerplants. Simply stated, theres not a better stud setup on the market today. For openers, ARP uses a premium grade 8740 alloy that is rated far superior to aircraft quality. Each stud is placed vertically in special racks and precisely heat treated to 200, 000 psi. This procedure ensures complete heat