Accufab- Race Head Stud Kit 4.6 / 5.4 / 5.8 / Coyote These 9/16" to 1/2" custom head studs were originally designed for use in Top Fuel. They are much larger than the commonly used 11mm head studs and requires the block to be tapped to 9/16-12. Torque can be increased up to 125 ft lbs. Cylinder... MSRP: Was: Now: $699.99 Add to Cart
