then there is this as well. it wasnt a one year only block 75-78 here
- Small-Block Mopar Engine Block Casting Numbers
2264230 – 1960-1967, 318 A-series small-block
2463252 – 273 LA-series small-block
2465330 – 1964-1966, 273 LA-series small-block
2466090 – 318 LA-series small-block
2468230 – 318 A-series small-block
2532630 – 318 A-series small-block
2536030 – 1967-75, 318 LA-series small-block
2536130 – 1965, 273 LA-series small-block
2566080 – 318 LA-series small-block
2780930 – 1968-1973, 340 LA-series small-block, Not T/A or AAR
2806030 – 1966-1969, 273 LA-series small-block
2806030 – 1961-1974, 318 LA-series small-block
2806130 – 1965-1969, 273 LA-series small-block
3418496 – 1971-1974, 360 LA-series small-block
3577130TA – 1970-1971, 340 LA-series small-block, T/A and AAR
3810230 – 1975-1978, 360 LA-series small-block
4104230 – 318 LA -series small-block, Race Engine
4179930 – 1975 – 1993, 360 LA-series small-block