Cylinder Head Stud Kit for Pontiac 400-455 cid with Edelbrock Performer D port heads 61579, 61599 (#

Cylinder Head Stud Kit for Pontiac 400-455 cid with Edelbrock Performer D port heads 61579, 61599 (#It is for good reason that virtually every top professional enginebuilder relies on ARP Pro Series head studs for their all out competitionpowerplants. Simply stated, theres not a better stud setupon the market today. For openers, ARP only uses premium grade 8740 alloy anda proprietary ARP2000 alloy that are rated far superior to aircraftquality alloy steels. Secondly, each stud is placed verticallyinto special racks and precisely heat treated to

They run-in straight and true

which requires less energy to operate

The threads are rolled after heat-treating which gives them about 2000% better fatigue strength than most main bolts that are threaded prior to heat-treating

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

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

Whether you’re mounting your fan directly to the water pump

To ensure proper sealing of valve covers

allowing forslight misalignment

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

each stud is placed verticallyinto special racks and precisely heat-treated to 190

Features extra heavy springs for consistent repetition

but the results are well worth the extra effort