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TECH: Chevy Engine Numbers

Discussion in 'The Hokey Ass Message Board' started by squirrel, May 23, 2007.

  1. squirrel
    Joined: Sep 23, 2004
    Posts: 48,671

    squirrel
    Member

    65-67 2bbl 283 from a full size Chevy car.

    the casting date code at the back of the block will help you figure out the year. It was assembled in May, of whatever year it was cast.
     
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  2. Thank you. I was told that it was a 283. Now I know for sure.
     
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  3. rustydusty, I sent you a conversation (PM).
     
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  4. OLBLU55
    Joined: Apr 20, 2019
    Posts: 2

    OLBLU55
    Member

    Hi, new here. Great thread with lots of useful content. But can't find exactly what I'm after.
    Just purchased what I'm told is a "66 250ci Chevy pickup engine", wanting to confirm what I have.
    Block numbers are K 1 5 (Nov 1st 65?), 3877178 (62-78, 230-250), F1102SX (Flint, Nov 2nd, ___?), head is 3872710. Can't find the SX suffix or any head info in my searches. Had a 4 speed manual behind it, has single barrel carb.
    Any info will be much appreciated.
    Thanks.
     
  5. Black Panther
    Joined: Jan 6, 2010
    Posts: 1,732

    Black Panther
    Member
    from SoCal

    OLBLU...1966 Chevy truck...K15 is November 1st of 1965 for 1966 model year. 20190420_223316.jpg
     
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  6. squirrel
    Joined: Sep 23, 2004
    Posts: 48,671

    squirrel
    Member

    wow, someone else has those truck engine codes, I though I was the only one :)
     
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  7. After having misplaced it years ago, I just found all my data on Friday, but for some reason,I don't have the codes for the 6 cylinder cars or trucks. The data I have, was published in the Super Chevy magazine years ago. I don't remember if the information on sixes was available and I didn't keep it, or that the information was not included, because people were more interested in the performance cars.
    It is great to know that the information has been memorialised by other HAMBers, so that there is always someone to come up with a helpful response.
    Bob
     
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  8. OLBLU55
    Joined: Apr 20, 2019
    Posts: 2

    OLBLU55
    Member

    Thanks guys. Good to know,
     
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  9. Here is a Camero site that has a great sbc suffix code list. www.1968ss.com/
     
    Last edited: Apr 23, 2019
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  10. Cshipley63
    Joined: Jun 1, 2019
    Posts: 1

    Cshipley63
    Member
    from Howell, MI

    image.jpg Hey guys, I just purchased a 1959 GMC 150, and we are trying to figure out what motor is in it.
    Castings on right side under the head says GM-2 and then under that it says 533087. It has 4 on the floor and drives like a tank! Any clues what it could be. He said it is the original GMC 283 but it looks like a Pontiac motor to me. Ive tried to find it in GM casting number searches but I don’t see it anywhere. Thoughts?
     
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  11. theHIGHLANDER
    Joined: Jun 3, 2005
    Posts: 8,210

    theHIGHLANDER
    Member

    Yes, that's a Pontiac. Just under 300 CID, I can't quite recall the exact size. Makes it easy to drop a 389 or bigger in it;)
     
  12. v8coupe
    Joined: Dec 8, 2015
    Posts: 15

    v8coupe

    Just picked up a 327, Any more information on this??

    3858174 - this seems to be a 327

    F06I4wy - cant find anything on this?
     
  13. Deuces
    Joined: Nov 3, 2009
    Posts: 20,093

    Deuces
    Member
    from Michigan

    Did Pontiac make a 287ci engine?????
     
  14. olscrounger
    Joined: Feb 23, 2008
    Posts: 4,230

    olscrounger
    ALLIANCE MEMBER

    yes in 55,56-316?,57 347
     
  15. 3858174


    1964-67 327 Pass, Chevelle, Camaro
    2-bolt main

    64-67 327 Truck


    66 Corvette 327, 300, 350 hp

    Must be from a Corvette :)
     
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  16. squirrel
    Joined: Sep 23, 2004
    Posts: 48,671

    squirrel
    Member

    1968 307 van manual transmission
    1969 350 C,S-50 truck auto trans
     
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  17. v8coupe
    Joined: Dec 8, 2015
    Posts: 15

    v8coupe

    Thanks Squirrel,
    That's confusing me though? So 3858174 relates to 327 but F06I4wy is 307 van or 350 truck
     
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  18. squirrel
    Joined: Sep 23, 2004
    Posts: 48,671

    squirrel
    Member

    look for the casting date code on the back of the block, it will be a letter followed by a few numbers. The letter will tell you what month it was case, and the last digit will tell you what year. So if it's before J.....8 then it's a 1968 model year, if it's after, then it's a 1969. But you already know the block casting number is from 1967 or earlier, so it means it can't be either one!

    My truck parts book shows all the 1967 truck 327s starting with Y. It does show a YW code.

    Sounds like a fun puzzle.
     
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  19. Salvarican
    Joined: Oct 17, 2006
    Posts: 80

    Salvarican
    Member

    Came across this thread searching online for ways to figure out the engine I just bought. Can someone shed some light? So the head number is 3835499 which I think I found out it's a 235 head. But the the block stamped number is JAD630680 which I can't find anywhere on line. I found JDA but that's different. Thanks in advance.
     
  20. squirrel
    Joined: Sep 23, 2004
    Posts: 48,671

    squirrel
    Member

  21. Salvarican
    Joined: Oct 17, 2006
    Posts: 80

    Salvarican
    Member

    Is it a full pressure 235?
     
  22. Last edited: Nov 5, 2019
  23. Salvarican
    Joined: Oct 17, 2006
    Posts: 80

    Salvarican
    Member

    That is the car it came out of. Except, it didn't have a power glide, it had a 3 speed. Could have been change along the years, I guess.
     
  24. squirrel
    Joined: Sep 23, 2004
    Posts: 48,671

    squirrel
    Member

    it was pretty common to replace engines with used engines from the junkyard....as well as changing transmissions. so we'd need more info to decide what was changed.
     
  25. Salvarican
    Joined: Oct 17, 2006
    Posts: 80

    Salvarican
    Member

    Pictures of engine and numbers
     

    Attached Files:

  26. Salvarican
    Joined: Oct 17, 2006
    Posts: 80

    Salvarican
    Member

    More
     

    Attached Files:

  27. squirrel
    Joined: Sep 23, 2004
    Posts: 48,671

    squirrel
    Member

    That could be a 1951 235, from a powerglide equipped car.
     
  28. Salvarican
    Joined: Oct 17, 2006
    Posts: 80

    Salvarican
    Member

    How can I make sure?
     
  29. squirrel
    Joined: Sep 23, 2004
    Posts: 48,671

    squirrel
    Member

    It has the correct code stamped on it, and the stamp appears to me to be original...I guess you could also check the casting date of the block.

    The side cover is the type used on 235 engines, and the rest of it looks "right".

    Just how sure do you need to be? :)
     
  30. Salvarican
    Joined: Oct 17, 2006
    Posts: 80

    Salvarican
    Member

    Well I really want to make sure because I bought it to upgrade from a 216 to a 235.
     
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