Chevy BBC 454 Chromoly Head Bolt Kit 000 psi tensile strength for

000 psi tensile strength for the utmost in reliability

They do this using a unique design in which cooling tubes draw cool air through the transmission fluid

They are designed to ensure belt retention at high rpm

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

Chevy BBC 454 Chromoly Head Bolt Kit 000 psi tensile strength forSpeedmaster 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.