Cylinder Head Bolt Kit for AMC 290-343-390 cid (1969 and earlier) 7/16˝

Cylinder Head Bolt Kit for AMC 290-343-390 cid (1969 and earlier) 7/16˝High Performance head bolts are available with a reduced wrenching hex or 12 point and wide area flanged head that eliminates theneed for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180,000 psi (which is 15%stronger than Grade 8) and kits come complete with hardened parallel ground washers. Material: 8740 Chrome Moly Finish: Black Material 2: Finish 2: Origin: USA

ARP’s rugged primer shafts are rated at 170

the compact 12-point inut lets you easily slip a socket close to the pipe

You’ll note that the studs have a radiused bullet nose that serves to locate the pan rails

Studs are manufactured with a unique nut-starter nose that helps prevent cross-threading

ARP quality delivers increasedpre-load clamping force and assures positive timing gear register

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

square drive forged into bolt head

the bolt should be replaced immediately

This procedure ensures complete heat penetration and the resultsare far superior to those lesser quality studs from other manufacturerswho just dump pieces in a basket and hope for the best

This helps prevent blown head gaskets

Forged from 8740 chrome moly steel

Those first moments an engine runs prior to building oil pressure are when damage can easily occur