Buick Head Casting Numbers

Big Block Heads
Head Cast # Year Displacement
1231109 68-69 430
1231786 69 400/430
1231786 70 455
1237661 71 455
1238148 70-72? 455
1238529 70-76 455
1238530 72 455 Stage 1
1245713 69 400/430
1240144 70-71 455
1240145 71 455
1240146 71 455
1240149 70-71 455
1240150 70 455
1241860 73-74 455
1242001 73-74 455
1242445 70-72 455
1242449 72 455
1246322 75-76 455
1246332 75-76 455
1248922 72-76 455
1250489 75 455
1372963* 67 430
1372985* 67 430
1372986* 67 430
1377979 67 400
1377980* 67 400
1382091 68 400,430
1382720 67 400
1382983* 67-68 430
1382985* 68 430
1382986 68 430
1384720* 68 400,430
1385649 68 400/430
   * Big Port, 69cc
Small Block Heads
Head Cast # Year Displacement
1193743 61-63 215
1238532 72 350
1242457 71-73 350*
124498 74 350
1247716 75 350
1366379 67 340
1374720 65 300
1382546 71 350
1382720 68 350
1383984 67 340*
1394280 64 300
1396788 66-67 340