Engine Works Pro Series Head Bolt Kits

Engine Works Pro Series headbolt kits contain high performance, ultra-strong fasteners designed for competition engines. Rated at 190,000–200,000 psi, they're cold-forged from 8740 chromoly steel, featuring 12-point heads, reduced wrenching, and hardened, parallel-ground washers to provide superior, consistent clamping force. Kits are available for a variety of Chevrolet engines from 1955 and up.

Key details:

* These bolts are significantly stronger than factory options and typically superior to Grade 8, preventing head gasket failures
* 12-point design: Bolts feature a reduced wrenching hex or 12-point head, which allows for easier installation in tight spots and better torque application
* Unlike many factory torque-to-yield (TTY) bolts, these are often reusable, making them ideal for engines that may be serviced or upgraded frequently
* Many kits feature undercut bolts, which provide more "stretch" to better handle the increased compression of high performance gaskets
* Machined from 8740 alloy steel, providing exceptional tensile strength and molecular integrity
* Components:
-- Full set of cylinder head bolts
-- Hardened, parallel-ground washers (for even load distribution)
-- Assembly lubricant to ensure accurate torque readings
* Common applications:
-- High-performance street cars, race cars, and street-mod engines
-- Commonly used in GM LS, Ford, and other popular domestic engine builds where high cylinder pressures are expected
-- These kits are specifically designed for high performance applications where the reliability of the cylinder head-to-block seal is critical, such as in forced induction or high compression engines
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