Cylinder head casting numbers

Mopar Head Casting Numbers 1959-1978
RB/B, LA Cylinder Head Casting Numbers
The casting numbers for most RB, B, and LA heads are found in two places. On the underside of the head on an intake runner, and under the valve cover on an intake runner.

Casting Number Under Valve Cover on Intake Runner. Casting Number on the Underside of Head on Intake Runner.

LA Engine Cylinder Heads Casting Numbers

Casting Number Engine CID Year Intake Exhaust
2465315 273 1964-65 1.78 1.50
2536178 273 1966 1.78 1.50
2658920 273 1967 1.78 1.50
2843675 273 1968-69 1.78 1.50
2658920 318 1967 1.78 1.50
2658234 318 1967 1.78 1.50
2843675 318 1968-74 1.78 1.50
3769973 318 1975-83 1.78 1.50
4027163 318 1977-86 1.78 1.50
4027593 318 1977-84 1.78 1.50
4323302 318 Fast Burn 1985-86 1.78 1.50
4323345 318 Police 1983-86 1.78 1.50
2531894 340 1968-70 2.02 1.60
3418915 340TA 1970 2.02 1.60
3418915 340 1971-72 1.88 1.60
3671587 340 1973 1.88 1.60
3418915 360 1970-72 1.88 1.60
3671587 360 1973-74 1.88 1.60
3769974 360 1975-76 1.88 1.60
3671587 360 1976 1.88 1.60
4027569 360 1977-86 1.88 1.60
RB/B Engine Cylinder Heads Casting Numbers
Casting Number Engine CID Year Intake Exhaust
4021051 360 1977-86 1.88 1.60
1737637 361 1958-59 1.94 1.60
1944705 361 1958-59 1.94 1.60
1737637 383 1960 1.94 1.60
2206324 361/383/413 1961-62 2.08 1.60
2206924 361/383/413 1961-62 2.08 1.60
2463200 361/383/413 1963 2.08 1.60
2406516 361/383 1964-67 2.08 1.60
2402286 413 Max Wedge 1962 2.08 1.88
2463209 426 Max Wedge 1963 2.08 1.88
2406518 426 Max Wedge 1964 2.08 1.88
2406158 440 1967 2.08 1.60
2780915 440HP 1967 2.08 1.74
2843906 383/440 1968-70 2.08 1.74
2951250 440 1968 2.08 1.74
3462346 383/400/440 1971-72 2.08 1.74
3462346 400/440 1973 2.08 1.74
3751213 400/440 Motor Home 1973 2.08 1.74
3769902 400/440 1974 2.08 1.74
3769975 400/440 1975 2.08 1.74
4006452 400/440 1976-78 2.08 1.74
Hemi Engine Cylinder Heads Casting Numbers
Casting Number Engine CID Year Intake Exhaust
2468016 426 Hemi 1964 2.25 1.94
2531110 426 Hemi (SS) - Aluminum 1965 2.25 1.94
2780559 426 Hemi 1966-71 2.25 1.94