ARP 255-5502 Main Stud Kit for Ford 460c.i.d. 385-series 2-bolt ymm_41 12-Point Harmonic Damper Bolt Kit

12-Point Harmonic Damper Bolt Kit with Washers (234-2501) by ARP®

Constructed from lightweight titanium

All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange to permit the use of larger diameter valve springs and eliminate the need for valve train removal during cylinder head retorquing

It’s an inexpensive insurance policy to protect your high performance engine regardless of the brand of water/methanol injection system you are using

Cutlass 1977

ARP 255-5502 Main Stud Kit for Ford 460c.i.d. 385-series 2-bolt ymm_41 12-Point Harmonic Damper Bolt KitSpecifications Socket Size(s) 3 4 hex, 9 16 hex, 3 16 Allen, 5 32 Allen