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Quote:
Originally Posted by JimNNN
. . . I've heard that rebuilding the 239 Y block isn't an easy endeavor, as apparently changes were made throughout the year, and (as the OP said) there's apparently some non-interchangeability with the later years. ...
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Quote:
Originally Posted by KULTULZ
There were two different 239 CI OHV engines introduced in 1954. The odd ball was the DIF (DETROIT) engine (PASS CAR). The later design 239 was CF (CLEVELAND FOUNDRY) (TRUCK) and was used prior to the later 1956 TRUCK 272.
This is where most confusion originates.
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About 6 years ago I took a leftover '54 engine to a local machine shop known for their Y-block work. Wanting to see if it was potentially repairable, or not.
The machinist told me it was ok and not 'the old version' that they hadn't been able to get cam bearings (and some other misc parts) from their supplier for about 10 years or more.
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