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Buick Nailhead Casting Numbers, 264, 322, 364, 401, 425
Block Cast # Year Displacement
1165165X 53-56 322
1165752 54-55 264
1169334 56-59 322
1173201 59-61 364
1174372 59-60 364
1185404 61-66 401
1185484 59-66 401
1196546 61 401
1196547 61 364
1340146 63-66 425
1345404X 59-66 401
1346046 61-66 401
1349046 62-66 401
1354713 64-66 425
1354714 64-66 401/425
1364704 63-66 425
1364705 64-66 401/425
1364705X 63-66 425
1364707 63 425
1364714X 59-66 401
*Chev truck

INTAKE MANIFOLD
Cast # Part # Year Displacement
36387  -     4bbl
343241  -  '63  401 4bbl
1343985 1162286 53 322 4bbl
- 1163206 54-55 322 4bbl
1165308 1165308 53-55 264, 322 2bbl
1165384 1165384 55 322 4bbl
- 1169189 man. trans. 55 322 2bbl
- 56 322
1170616 1170624=40 55-56 322 2bbl
1170617 1170625=50/60/70 55-56 322 4bbl
- 1175327= 59-61 364 2bbl
- 1175328= 57-61 364 4bbl
1173313 57-61 364 4bbl
1185976 - '63 401 4bbl
- 1187708=46/47/4800 59-62 401 4bbl
- 1349425= 62 401 2bbl
- 1354966= 61 401 2bbl
- 1358983= 61-63 401 4bbl
- 1356950= 63 401 2bbl
1353240 - -
1353241 63 401 4bbl
- 1355410= 63 401 4400 OMIT ON HP
- 1353531= 63 401 4400 HP 46-47-4800
1363782 62 4bbl
1355409 - 62-63 401
1357106 64 425 2x4bbl
- 1357106= 64 401-425 2x4bbl
1370316B 1370316= 65-66 425 2x4bbl
1372113 1375118= 66 401hp 425
4bbl Rochester
1363782 1375548= 64-66 401-425 4bbl
1375549 63 425
 
Head Cast # Year Displacement
1165549 53-56 264/322
1166349 53-56 264/322
1168930 56 322
1169349 56 322
1172889X 57-61 364
1175109X 56-59 322*
1185485 61-66 401/425
1190415 62-66 364/401/425
1196914 63-66 364/401/425
1343840X 53-56 322
1374603 64-66 401/425
1376912 66 401/425
*Chev truck

EXHAUST MANIFOLD
Cast # Part # Year Displacement
- 1165212= right 54-55 264/322
- 1172392left - 322
1167750 1175575 left 56 322
1167833 1175576= right 56 and series 70 322
1167833 1175581= left 56 DUAL series 70 322
- 1185463= left 57-58 DUAL 364
- 1185602= right 59-60 364, 401
1186505 1186503= left 59-60 364, 401
- 1186291= DUAL left 59-60 364, 401
1173844 1187336= right 57-58 RM, Limited 364
1345464 1345564= right 53 322
1345465 1345565= left 53-54 322
- 1347776= right on 62 61-62 364, 401
- 1193697= left 61-63 40-41-4300 364, 401
- 1196974= right 61 44-46-47-4800 364, 401
- 1345435right - 322
1348347 1348477=left 62-64 401
- 1356754= right 63 V-8 40-41-4400
- 1356568= left 63 401
- 1359689= left 64 V-8 40-41-42-43-4400
- 1354178= right 64 V-8 40-41-42-43-4400
- 1355435right - 322
- 1355465right - 322
- 1351702= right 62 401
- 1356756 left - -
- 1361860right - 401, 425
1366827 1367159= left 65-66 401, 425
- 1372319= left 65-66 GS 401
- 1377476= right 65-66 GS 401
1377482 1377480= right 64-66 401, 425
- 1396568= right 63 44-46-47-4800
 
322 8 3/8"
364 8 7/8"
401-425    9 1/8"
Looking at an aftermarket nailhead manifold and wondering what it will fit? Try this, measure between the bolt holes...
contributed by Steve Berry, Airy Cat

 




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