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Click on image for the lowdown. 
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| | | Forums66 Topics128,056 Posts1,055,800 Members48,426 | | Most Online14,466
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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | They made high-pressure 235s in 1953 for Powerglide equipped cars/including Corvettes. BC59's suggestion is the best in determining if you have a 261 ( 6 small holes as shown here). 261s supposedly did not become available until 1954 models. Find and post all the casting codes: block casting code and block date casting code. | | |
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