Autotec Series forged pistons for 4.233 bore Ford Series based engines are available in flat top, inverted dome, or milled dish designs. Standard ring packs are 1/15 1/16 3/16 widths with D Wall radial dimensions. Wrist pins are .975 or .990 diameter by 2.700 long as indicated in the technical specifications, and wire locks, along with oil rail supports (if required), are included. Broached pin-oilers and gas accumulator grooves are incorporated at no additional cost. Domes and combinations not listed are available as a custom piston.