This listing is for set of eight (8) pistons Hypereutectic coated skirt flat top 4VR pistons and a Moly piston ring set compatible with Ford 1964-68 4.7L 289 and 1977-86 5.0L 302 V-8 engines. These are stock replacement pistons for 1964-68 289 cid 4.7L engines and 1977-86 302 cid 5.0L engines. Piston specifications are as follows: Bore: 4.000" at +.STD", Head type: Flat head w/4-valve reliefs - 8.2:1 CR w/64cc chambers, Ring lands: 5/64"-5/64"-3/16" Comp. Distance: 1.585" Pin Diameter: .912"; press-fit.. In Your choice of Over sizes, just click the oversize box needed and add to your cart.