Thread: 265 vs. 301
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  #33  
Old 06-19-2025, 11:23 PM
Schurkey Schurkey is offline
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Join Date: Aug 2002
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Quote:
Originally Posted by hojs69 View Post
Resurrection time.........the Pontiac 265.

Just saw this on Ebay.

https://www.ebay.com/itm/296340261591
Look at the crankshaft photos!
There's a front counterweight, there's a rear counterweight, and there's a bunch of iron in-between saying "Daddy, when I grow up, can I be a counterweight just like you and Mom?"




Quote:
Originally Posted by 77 TRASHCAN View Post
the turbo engine was having crankshaft issues...

...they had found 3 Pontiac 301's that were locked up!!! They were enthusiastic in their endevour. Until they took the oil pans off. All 3 had broken crankshafts
Not surprising.

Quote:
Originally Posted by b-man View Post
flimsy non-counterweighted crank lower ends... siamesed intake ports. Yuck.
Pontiac did the siamesed ports on the "Iron Duke" also. Made a big deal of it in their SAE paper, as if it were a good thing.

Quote:
Originally Posted by srmmmm View Post
The crankshaft strength limited maximum design output to 280 HP. But the fully dressed engine was 110 pounds lighter than the 350 which helped offset the power drop.
I knew they were lighter, but I didn't know they were that much lighter!


Last edited by Schurkey; 06-19-2025 at 11:28 PM.