Main Bolt Kit for Buick 455 cid

Main Bolt Kit for Buick 455 cidFar superior to any other main bolts available for use in competition engines, ARP main bolts are designed to meet the exacting standards and demands of professional engine builders. Forged from 8740 chrome moly steel, all ARP main bolts feature a reduced renching head, large underhead radius and rolled threads for the utmost in reliability. The threads are rolled after heat treating which gives them about 2000% better fatigue strength than most main

rated at 190

ARP offers High Performance Series bolts that aremade from a premium grade chrome moly and hardened to a nominal tensile strength of 180

in length or more

square drive forged into bolt head

Specially drilled “NASCAR” models are available for those who wish to safety wire their header bolts to prevent loosening

which makes for amore consistent clamping force – and one that compensates forhead gasket compression when the cylinder heads are installed

heat-treated in-house to 190

Comes with a heavy-duty

Simply followmanufacturer’s instructions

ARP main bolts are designed to meet the exacting standards and demands of professional engine builders

If there is a permanent increase of

If you have ever installed a rocker stud into a cylinder head and watched it wobble as it screwed in – you knew from the beginning that the rocker geometry was going to be inconsistent all over the place