The Mahle MS single piston specified for a 377 cid small-block Chevrolet features a 4.155 in bore, 3.480/3.500 in stroke range, 6.125 in rod length and a 0.927 in wrist pin. Sold individually, this piston lists a 13.5:1 compression ratio detail and references 2618 alloy in the extended description. It’s intended for engine builds specifying these exact SBC dimensions and piston characteristics.
Mahle MS Piston SBC 377ci 4.155 Bore 3.480/3.500in Stroke 6.125in Rod .927 Pin -5cc 13.5 CR - Single