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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Jul 2006 Posts: 186 'Bolter | | 'Bolter Joined: Jul 2006 Posts: 186 | I have a 54 235 block with a slight curve in the bolt pattern on one side of the block. I bought a pan that was supposed to be for a 54 but it has a straight bolt pattern. I saw a listing for a 58-62 pan that seemed to have the right bolt pattern. Was there a change in mid year 54? Is a car 235 pan different than a truck?
Still trying to get ole Betsy back on the road.
| | | | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | There was a change in pans between 1954 and 1955 on car engines and first series 55 and second series 55 in trucks. I suspect the date code of your block will be late 54, and was actually installed in a 1955 car.
Another possibility is that it was a crate engine sold much later. I have seen these. They look like 54 engines but use the later pan style.
Does yours have a single large hole in the block for the water pump or two smaller?
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