Direct bolt-on heads for 1982-95 5.0L and 5.8L (351-W) V8s originally equipped with pedestal mount rocker arms. On a ’93 5.8L engine torque improved more than 80 ft/lbs. over stock when these heads were combined with the Edelbrock Total Power Package. They accept 1982-95 5.0L V8 pedestal mount rocker arms and valvetrains. 1.90" intake valves are for use with stock pistons and 2.02" intake valves are for aftermarket pistons notched for valve clearance. These heads will not accept rail rockers. Ford 5.0L engines require Edelbrock Head Bolt Bushings #9680 and either Edelbrock Head Bolt Kit #8552 (7/16") or stock head bolts.