Description

This ARP 190-4305 Pontiac High Performance cylinder head stud kit is for 400-455 engines. Use with Edelbrock Performer and RPM Heads 60579 and 60599 made after 3/15/02 (#8549) only. ARP manufactures all studs from 8740 Chromoly Steel, heat-treated in-house to 190,000 psi tensile strength, and precision J-form threads rolled after heat-treat to create a fastener that has threads 2000% stronger than others!

Kits come complete with 12-Point nuts and hardened parallel-ground washers. Sold as a set of 20.

ARP 190-4305 Pontiac Head Stud Kit Fits:

• 400-455 Engines with Edelbrock Performer and RPM Heads 60579 and 60599 made after 3/15/02 (#8549)

Which is better, either cylinder head studs or bolts? The answer depends on the installation. On many street-driven vehicles, master cylinders as well as other items protrude into the engine compartment. In this case, the use of head bolts allows removal of the cylinder heads with the engine in the car.

The ARP 190-4305 Pontiac Head Stud Kit is perfect for that application!

Studs also provide more accurate and consistent torque loading. Using studs ensures easier engine assembly, as well as proper alignment of both the cylinder head and gasket.

Heres why: when you use bolts to secure the head, the fastener is actually being twisted while its being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously.

Install a stud in a relaxed mode never crank it in tightly using a jammed nut. Always install the stud hand tight! Then, when applying torque to the nut, the stud will stretch only on the vertical axis.