OptiTorque Patriot Series Cylinder Head Bolt Kit - Hex Head - Chromoly - Black Oxide - Small Block Chevy EBC Brakes A high water temp can

A high water temp can be detrimental to an engine

If the two halves butt up against each other without a gap

Standard O2 Thread M18x1

PerTronix D132700 Flame-Thrower Electronic Distributor Billet Ford 351C Plug and Play with Ignitor II Technology Vacuum Advance Black Cap

OptiTorque Patriot Series Cylinder Head Bolt Kit - Hex Head - Chromoly - Black Oxide - Small Block Chevy EBC Brakes A high water temp canProduct Description: Cylinder Head Bolt Kit Patriot Series Hex Head Chromoly Black Oxide Small Block Chevy OptiTorque produces premium quality fasteners for a wide range of automotive applications. From stock rebuilds to hard core racing builds, OptiTorque fasteners are USA made and designed, featuring premium materials and designed to meet or exceed OEM specs.