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Mod | | | Forums66 Topics128,163 Posts1,056,962 Members48,458 | | 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: Aug 2009 Posts: 56 Wrench Fetcher | | Wrench Fetcher Joined: Aug 2009 Posts: 56 | I have just resently purchased at 1951 chevy truck and it has this stamped on the inline 6 engine block, "CPA626416" the best I can read. Can anyone out there tell me and direct me to some internet location of what kind of engine it is? age, place made, etc?
Thanks
| | | | | Joined: Sep 2001 Posts: 29,270 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,270 | Someone else will have to comment on the meaning of "CPA". If you can post a few casting codes, these would also help to identify the engine. Tim | | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | CPA doesn't come up in my books as a 6 cylinder. The only engine I have listed with that code is a 365 hp 454 for a '71 El Camino. I'm with Tim, some casting codes and perhaps a few pix will help.
Bill Burmeister | | | | | Joined: Apr 2006 Posts: 506 Shop Shark | | Shop Shark Joined: Apr 2006 Posts: 506 | Welcome to the Garage. You can find Engine ID info here... Also, there is a raised casting number, on the lower passenger side of your block. It either starts with an 8 and has six numbers.... or starts with a 3 and has 7 numbers. Post that number and someone will tell you what you have.
-Tom
1950 Chevy 3100 w/ 1956 235
| | | | | Joined: Apr 2009 Posts: 431 Shop Shark | | Shop Shark Joined: Apr 2009 Posts: 431 | | | | | | Joined: Aug 2009 Posts: 56 Wrench Fetcher | | Wrench Fetcher Joined: Aug 2009 Posts: 56 | Let me look again tonight. This number I took of block on passenger side by the coil looking up. I'll work on a picture. Thank everyone!
I just finished getting my title changed from a engine serial number VIN to the actual truck tag number :-). Funny how things can get mixed up over 60+ years. But then again I'm kind of mixed up myself.
Bruce | | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | Looks like the code got recycled a couple of times. My books stop at '72, and pretty much only list truck engines, exept for the years with Sedan Deliveries ans El Caminos.
Bill Burmeister | | | | | Joined: Apr 2009 Posts: 431 Shop Shark | | Shop Shark Joined: Apr 2009 Posts: 431 | engine serial number VIN? some states, tx comes to mind, use engine serial numbers as VINs. do you know it's history? | | | | | Joined: Aug 2009 Posts: 56 Wrench Fetcher | | Wrench Fetcher Joined: Aug 2009 Posts: 56 | OK, here we go. I've typed in below a link to my website where you'll see the engine stamping. Looks like it could be a CBA and not a CPA. Once again if anyone can help me and show me what size this engine is I would greatly apprecated. History: This truck had a California title prior to me, built in Oakland. Title now has truck number "6JPF" rather than old "LCC" engine number. http://www.webdg.net/1951Thanks, | | | | | Joined: Mar 2006 Posts: 319 Shop Shark | | Shop Shark Joined: Mar 2006 Posts: 319 | I vote for "CBA". Check out this link from chuckthetruck website and look at 1971 and 1972 engines. CBA is a passenger car 250 found in several models. http://no25.chuckthetruck.com/page3a.html#1977
"Nothing astonishes men so much as common sense and plain dealing." - Ralph Waldo Emerson
| | | | | Joined: Aug 2009 Posts: 56 Wrench Fetcher | | Wrench Fetcher Joined: Aug 2009 Posts: 56 | thanks might be getting somewhere now. | | | | | Joined: Sep 2001 Posts: 29,270 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,270 | Can you post a link to a photo of the valve cover?
Does your engine's valve cover look like the one in the serial-number photo above (that engine is either an early 216 or 235)?
| | | | | Joined: Apr 2006 Posts: 506 Shop Shark | | Shop Shark Joined: Apr 2006 Posts: 506 | Once again if anyone can help me and show me what size this engine is I would greatly apprecated. Bruce, Once again, if you post the block casting number everyone has been asking for, maybe we can tell you what size the engine is.
-Tom
1950 Chevy 3100 w/ 1956 235
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