Mopar Engine Casting Numbers 1959-1978

RB, B, LA Engine Casting Numbers The block casting numbers for all RB, B, and LA engines are found on the left (driver) side of the block.  In addition, on 1968 and later engines the numbers stamped on the lower rail of the engines right (passenger) side match the last 8 digits of the cars vehicle identification number.   Casting Number on LH Side of Engine VIN Number Stamped on RH Engine Pad     Casting Number CID Year Type Comments 2202843 170 1960-64  G   2463230 170 - G    2463395 170 - G   2264478 170 - G   2205630  170 - G   2463430 225 1960-67 RG   2806830 225 1968-70 RG Includes 198 3462605 225 1975 RG   2951694  225 - RG   2202857 225 - RG   2205528 225 - RG   2465330 273 1964-66 LA   2536130 273 1965 LA   2806130 273 1966-69 LA   2264230 318 1960-66 A   2466090 318 1967-74 LA   2806030 318 1967-74 LA   2536030 318 1967-75 LA   2566080 318 - LA   2780930 340 1968-73 LA Except T/A & AAR 3577130TA 340 - 6 bbl 1970 LA T/A & AAR 1944929 350 1958     3418496 360 1971-74 LA   3870230 360 1975- LA   1737629 361 1961-64 B   2120329 361 1958-66 B   2205712 361 1958-66 B   2120229 361 - B Industrial 1852029 413 1959-62 RB Max Perf. & Truck 2120529 413 1959-65 RB   2205697 413 1959-65 RB Passenger Car 2468030 413 - RB   2205697 426 1964 RB Passenger Car 2406730 426 1963-65 RB Wedge & Max Perf. 1851729 383 1959-64 B   2120329 383 1959-64 B   2568130 383 1959-71 B   2468330 426 1964-71 RB Hemi Head 2532230 426 1964-66 RB Wedge & Max Perf. 2536430 440 1966-72 RB   2658836 426 - RB Industrial 3614230 400 1971-72 B   3698630 400 1973-78 RB   3698830 440 1973-78 RB   4006530 400 1976-78 B   4006630 440 1978 RB