Chrysler ________________________________ 301-331-354 blocks have a main bearing bore diameter = 2.6565-2.6570", the thrust main width = 0.995" 392 blocks have a main bearing bore diameter = 2.8800-2.8805", the thrust main width = 0.995" 301 ..... 1955 ............ 1613129 'W' casting 331 ..... 1951-1953 ....... 1323329 331 ..... 1954 ............ 1330129 truck-marine-industrial 331 ..... 1954 ............ 1551629 pass car 331 ..... 1956 ............ 1618628 Spitfire (poly) 'W' 331 ..... 1956 ............ 1619629 VTxxx 354 ..... 1956 ............ 1619829 Pass car 354 ..... 1957-1958 ........1619829 Ind 56A 392 ..... 1957-1958 ....... 1673729 (High '-' number usually indicates 1958 usage.)
DeSoto_____________________ 276-291 blocks have a main bearing bore diameter = 2.5675-2.5680", the thrust main width = 0.885" 330-341-345 blocks have a main bearing bore diameter = 2.6925-2.6930", the thrust main width = 0.885" 276 ..... 1952-1954 ....... 1327429 291 ..... 1955 ............ 1558929 325 ..... 1957 ............ 1739429 (KDS) 330 ..... 1956 ............ 1636629 341 ..... 1957 ............ 1636629, 1856629
Dodge____________________________ 241-260-270 blocks have a main bearing bore diameter = 2.5675-2.5680", the thrust main width = 0.885" 315-325 blocks have a main bearing bore diameter = 2.6925-2.6930", the thrust main width = 0.885" 241 ..... 1953 ............ 1328829 D44 241 ..... 1954 ............ 1551229 270 ..... 1955 ............ 1632229 270 ..... 1956 ............ 1635729 truck 315 ..... 1956 ............ 1630029, 1730129 (D-500), 1730429(late) 315 ..... 1957 ............ 1739429 truck 325 ..... 1957 ............ 1739429 (KD500)(KDS)
Plymouth___________________________ 260 ..... 1955 ............ 1632228, 1632229 (P-27) 270 ..... 1956 ............ 1632229 (P-29)