Set of (8) Pistons compatible with 1966-70 Ford Car, except 1969-70 Super Cobra Jet in your choice of sizes. These are Recessed head .120" deep, Compression distance: 1.665", 5/64" 5/64" 3/16" ring grooves, .9753" pin diameter for press or floating rods. Stock length rods Stock 3.980" stroke.