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330CID 320 HP Block and Parts

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Old Apr 5, 2024 | 02:39 PM
  #1  
Dabittner's Avatar
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425 CID 360 HP Block and Parts

1967 Oldsmobile 425 CID 360 HP block, forged steel crank,flex plate, heads, 4bbl intake and oil pan. Parts have some surface rust from sitting in an unheated garage for 40+ years but will clean up fine with a bore and a cut. This block and crank has never been bored or cut which is rare for a nearly 60 year old part. I ran a hone through the bores and polished a couple of crank journals just to make sure there was no pitting and all looks good. If you're restoring an older Olds this is for you. $250 OBO DM for details or to make an offer. Located in Chicago suburbs.









Last edited by Dabittner; Apr 5, 2024 at 06:36 PM. Reason: Someone corrected my original info and I was wrong
Old Apr 5, 2024 | 03:39 PM
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Originally Posted by Dabittner
1967 Oldsmobile 330 CID 320 HP block, forged steel crank,flexplate, heads, 4bbl intake and oil pan.




Those appear to be big block C heads.
Old Apr 5, 2024 | 04:22 PM
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Most definitely came off that block.

Originally Posted by Fun71
Those appear to be big block C heads.
Old Apr 5, 2024 | 05:04 PM
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389244D is a 425CID, a big block. Not a 330CID.
Old Apr 5, 2024 | 05:08 PM
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390390 is a big block intake manifold.
Old Apr 5, 2024 | 05:14 PM
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Sir, you have a disassembled 425, not a 330. Congratulations.

Edit: Also, that'd be one hell of a 330 to make 320 horse. The 425 can do that all day long.
Old Apr 5, 2024 | 05:36 PM
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'67 330CID were available in a 320HP factory horsepower rated option.
Old Apr 5, 2024 | 05:40 PM
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And the 400 CID was available in 350 HP. Are you picking up what I'm laying down?
Old Apr 5, 2024 | 05:42 PM
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Originally Posted by Sugar Bear
389244D is a 425CID, a big block. Not a 330CID.
Doh! I missed that.
Old Apr 5, 2024 | 05:49 PM
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Originally Posted by Koda
And the 400 CID was available in 350 HP. Are you picking up what I'm laying down?
The 400 was way under rated?
I just happened to like the 330's but yeah, a 425 could probably crank out 320 all day on 7 cylinders.
Old Apr 5, 2024 | 06:16 PM
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Originally Posted by Sugar Bear
The 400 was way under rated?
I just happened to like the 330's but yeah, a 425 could probably crank out 320 all day on 7 cylinders.
Well, somebody was lying at least once. Either the 400 was underrated, or the 330 was overrated, or a little of both.
Old Apr 5, 2024 | 06:23 PM
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Ran the numbers and you appear to be correct. Must have been the 360 HP motor as I remember the air cleaner saying "Ultra High Compression." This car would smoke the tires for a block.
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