Chevy BBC 454 Chromoly Head Bolt Kit which allow you to modify

which allow you to modify your cam timing

Intake manifold (Dual Plane)

and flame ball-milled finishes

These kits include all of the necessary external block freeze plugs

Failure or poor performance from a coil can result in a misfire

Chevy BBC 454 Chromoly Head Bolt Kit which allow you to modifySpeedmaster cylinder head fasteners are made from aircraft quality 8740 high tensile strength chromoly steel and cold forged to ensure molecular integrity. They are heat treated prior to thread rolling and machining and are rated at a whopping 190,000 psi. All kits come complete hardened parallel washers for an even load distribution and accurate torque readings.