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Labor Day Putting down your wrenches or time for
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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: Jan 2008 Posts: 77 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2008 Posts: 77 | OK, I've read all the info on this site and many others. The engine in my 5700 has a casting number on it --3738307 and the code above the starter seems to be 00N4. I thought the first one was supposed to be A-L ? Spare engine is 3835911 and 00N3. Blocks look different from each other, but both have 4 screws on valve covers and low water pumps. I put alternator bracket kit on the first engine and had to space out the mount because it hit another boss in the block below it. The other engine uses a bracket the bolts to the block just above the oilpan mount. Help Mr. Wizards !!! What do I have? | | | | | Joined: May 2002 Posts: 155 Shop Shark | | Shop Shark Joined: May 2002 Posts: 155 | Look on the flat spot next to the distributor hole...it should tell you what it is...
Geoff
Geoff
68 GMC 3800
56 JD420C w/JD90 Loader
| | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | 3835911 might be a high-pressure 235 block from 1953 (Powerglide), or 1954, or 1955
3738307 might be a 1957/58 high-pressure 235 block (passenger car)
"might be" means that the information came from various sources on the Internet (not from a GM document).
Tim | | | | | Joined: Jan 2008 Posts: 77 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2008 Posts: 77 | Thanks Geoff, I finally found some info that shows the 5911 to be a 54 and the 8307 to be a 58/59 truck or a 58-60 passenger. Both are 235's. I guess the way this works is tomorrow new info will prove all that wrong ! LOL | | |
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