Chevy BBC 454 Chromoly Head Bolt Kit rear-end housings

rear-end housings

The main difference is that there is an open area under the plenum chamber

1966-83 trucks and Suburbans

chrome plated for a shiny finish

These MidAir Series Manifolds includes a 4150 Series 1200 CFM Billet Throttle Body

Chevy BBC 454 Chromoly Head Bolt Kit rear-end housingsSpeedmaster 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.