Thread: Identifying 454 big blocks ?

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So, just to be clear, the Gen IV 454s are all identical with respect to bolting on heads, oil pans, installing cams, cranks, etc..............
The different casting numbers differentiate what then, plant of manufacture and ................?
If no difference then I can use a 286 or 289 block to replace my 1045445 cracked block with no problems (assuming they are 4 bolt mains).

all bbc parts from mark 4s can be swap around .like rods .cam. timing sets .tin . head bolts if stock heads. cranks are 4.000 two pc rear seal fit all the same iron or steel. 4 bolt mains have nothing to do with parts fitting as a stock two bolt block is the same block less 4 bolt caps and machine work .i have put 4 bolt caps on 454 and 396 blocks

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