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8 members (Otto Skorzeny, Steelonsteel, Gdads51, J Lucas, Peggy M, dt235sd, walter74, klhansen),
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Global Mod,
Mod | | | Forums66 Topics128,036 Posts1,055,454 Members48,422 | | 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!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: May 2010 Posts: 144 Wrench Fetcher | | Wrench Fetcher Joined: May 2010 Posts: 144 | I am looking at what the seller says is a 235, year unknown. He says the engine serial number stamped to the rear of the distributor is F1023J. I can't find that in the sources that I have had access to. Any help? Thanks John | | | | | Joined: Jan 2009 Posts: 1,644 Shop Shark | | Shop Shark Joined: Jan 2009 Posts: 1,644 | F- built in flint
10- built in October
23- built on the 23rd day
J- Type-Std. 6 -cly. 235
I beleive the year is 58 to 62
Manual trans
145 HP Pete
Last edited by Pete52; 05/30/2010 11:39 PM.
| | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | | | | | | Joined: May 2010 Posts: 144 Wrench Fetcher | | Wrench Fetcher Joined: May 2010 Posts: 144 | Tim, This is a big help with the year but how can I tell if it is a 235 or 261 or something all together different? Especially if I am trying to identify and confirm what someone is offering over the phone. Thanks John | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | What year is the block? If it is 58-63, have the person tell you the sizes of the holes in the block for the oil filter lines. If they are 1/2" NPT, you most likely have a 58-63 261 engine.
You can tell 261/235 from block casting code.
In order to know long-distance what you are dealing with, the seller will have to tell you these things over the phone, I guess.
Pete52 has good reason to suggest 58-62 engine - that code looks to be a 235 code (the J at the end).
F1023J : I think on a 261 that the J would be a P (and maybe an additional letter) on a 6xxx series truck (this code might be different for different years and for different option-combinations).
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