OptiTorque Patriot Series Main Stud Kit - 12 Point Nuts - 2-Bolt Mains - Chromoly - Black Oxide - Big Block Ford 07-306-8 carbureted

carbureted

GMC C25 1978-1975

Also used in clutch-type limited slip differentials in racing for maximum lock up-some users add Limited Slip Friction Modifier in small doses to customize slippage

The FORD WSS M2C 913 D standard allows fully backward compatibility over previous FORD WSS M2C 913 A

OptiTorque Patriot Series Main Stud Kit - 12 Point Nuts - 2-Bolt Mains - Chromoly - Black Oxide - Big Block Ford 07-306-8 carburetedProduct Description: Main Stud Kit Patriot Series 12 Point Nuts 2 Bolt Mains Chromoly Black Oxide Big Block Ford 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.