Engine Casting Numbers
& ID'ing a AMC block
When You are looking at ANY American
Motors Vehicle while the casting number is important, more important is the
engine size cast on the side of the block. All 67-up AMC V8 blocks were cast,
bored and stroked out of the same block. There is no such thing as a AMC BIG
BLOCK all were SMALL BLOCKS. From 290, 304, 343, 360, 390, and 401. So when you
might be not sure, it is highly advisable to crawl under the vehicle and see
what is stamped on the block, this will be on either side under the motor mount
if a V8. There are a number of 'replacement blocks' AMC used from 1970-up with
no casting numbers. It is not uncommon for someone selling a AMC to believe that
their engine is a '390 or 401' when in fact it is a 360 or 343. They all appear
the same! So simply make sure and crawl under the vehicle.
Here are two photos to show you where to look, this is driver side and this is passenger side of a AMC block.
Engine Casting Numbers
Ci. Year
Comments
(courtesy Todd Jesme)
--------------------------------------------------------------------
3144932
327 75-61
3147230
327 57-62
3153044
327 57-62
3153055
327 57-62
3153077
250 56-61
3153677
327 57-61
3166463
327 63-67
3169824
287 63-66
3179062
290 66-69
3179063
343 67-69
3190079
401 1971
3190806
390 68-69
7/16" Head Bolt
3190808
232,390 64-71
3195292
304 70-71
3195527
304 70-82
3195528
360 70-84
3195528
390,401 70-80
3195529
390 69-70
1/2" Head Bolt
3195529
401 72-76
3198951
401 71-78
3414725
401 72-74
3220411
401 75-78
4160275
327 63-66
440275
327 58-62
446527
320 1955
4486279
390 68-70
4487211
304 70-76
4488874
401 71-76
More Head Casting Numbers:
(courtesy Dave Crooks)
