Description

This ARP 135-3710 BBC High Performance cylinder head 12-Point bolt kit is for Mark IV blocks with Edelbrock heads #60409, 60429, 60459, 60479, 60499, and 60559. The reduced wrenching head eliminates the need 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)!

Kits come complete with hardened parallel-ground washers. Sold as a set of 32.

ARP 135-3710 BBC Head 12 Point Bolt Kit Fits:

• Mark IV Block with Edelbrock heads #60409, 60429, 60459, 60479, 60499, and 60559

Customers often ask ARPs Tech Representatives which is better, either cylinder head studs or bolts. The answer depends on the installation. On many street-driven vehicles, master cylinders and other items protrude into the engine compartment. Head bolts would allow cylinder head removal with the engine in the car.

The ARP 135-3710 BBC Head Bolt Kit is perfect for that application!

Studs also provide more accurate and consistent torque loading. Using studs ensures easier engine assembly, and 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.