ARP 185-4001 Head Stud Kit for Olds 455 ymm_81 and the tones can also

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

Colorado 2009-2012

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

This exhaust system is manufactured entirely from race-proven

400˝ Thread Size 7/16˝

ARP 185-4001 Head Stud Kit for Olds 455 ymm_81 and the tones can alsoIt 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