Small Block Chevy MIGHTY MOUSE MOTOR!! 400ci FORGED Pistons, .040'' Overbore { these can be used for a de-stroked 400 using a 350 stroke crankshaft and 5.7" rod giving you 379 cu.in. destroked 400... OR 3.750 stroke crankshaft using a 5.565: rod. gives you a 409 cu. in. displacement

Piston Dia.: 4.156''

Piston Top: .083cc Dish, 4-Valve Reliefs

Pressed Pin

Comp Ratio: 9.91:1 w/64cc Heads, 8.90:1 w/76cc Heads

Ring Grooves: 5/64'', 5/64'', 3/16''

Set of 8 new pistons with pins and E243K +.040" rings 48 state USA shipping ONLY!!!!