Fits: Pushrod 302 and 351 Ford high performance engines. 302/351 4.00" 4.100" 0.047" 10.169cc Fits: Pushrod 302 and 351 Ford high performance engines. Big Bore 351 Ford Performance Blocks 4.125" 4.160" 0.040" 9.1cc 4.125" overbore "competition" gasket.