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Technical SBC NUMBERS DON'T JIVE

Discussion in 'The Hokey Ass Message Board' started by xnology, Dec 29, 2017.

  1. xnology
    Joined: Aug 21, 2010
    Posts: 28

    xnology
    Member
    from Idaho

    I just picked up an old small block and looking up the numbers, the cast numbers and the pad stamp don't jive from what I have been able to research. Would anybody with more expertise, that can shed some light on the situation, be willing to help educate this unenlightened soul?

    Casting: 3903352 Date: B207 - A 1967 327 2 bolt 4bbl
    3903352-B207.jpg
    Stamping: T0306HC - Tonowanda - March 6th - HC suffix is either a 1965 327 or a 1969 350
    T0306HC.JPG

    So, I believe it is a 327 as it has the rear breather.
    02.jpg

    Double humps.
    08.jpg

    Really cool #1 team sticker!
    TONOWANDA.JPG

    My confusion is this: how can a suffix for a '65 be stamped on a block cast two years later?.
     
    chryslerfan55 likes this.
  2. 302GMC
    Joined: Dec 15, 2005
    Posts: 5,083

    302GMC
    Member
    from Idaho

    Some suffix letter combos were used for many years, and some were discontinued then reused.
     
  3. xnology
    Joined: Aug 21, 2010
    Posts: 28

    xnology
    Member
    from Idaho

    Good to know. I was looking at the lists on various websites as some sort of gospel that had been produced by GM at some point.

    Looks like I will have to pull numbers off internals to ID the motor further.
     
  4. Squirrel............... We need you.:D;)
     
    lothianwilly71 likes this.
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  5. qzjrd5
    Joined: Nov 23, 2004
    Posts: 1,209

    qzjrd5
    Member
    from Troy, MI

  6. Deuces
    Joined: Nov 3, 2009
    Posts: 15,040

    Deuces
    Member
    from Michigan

    Kool!!
    Please post pictures of the disassembly process...
    Thanks a bunch!!!:)
     
  7. BigDogSS
    Joined: Jan 8, 2009
    Posts: 766

    BigDogSS
    ALLIANCE MEMBER
    from SoCal

    You're OK. The "HC" engine suffix was also used for the 1966-68 327 engines installed in the full-sized Chevrolet line.

    Xnology, Cool that you have a "Tonowanda" sticker. Could you please post a picture further back, so I could see the sticker placement on the valve cover?
    Thanks!
     
    Last edited: Dec 29, 2017
    Larry T likes this.
  8. xnology
    Joined: Aug 21, 2010
    Posts: 28

    xnology
    Member
    from Idaho

    Thanks everyone! I love this place!

    It's the first time I've seen a Tonowanda sticker. I will take more pictures tonight.
     
  9. Mr48chev
    Joined: Dec 28, 2007
    Posts: 23,351

    Mr48chev
    ALLIANCE MEMBER

    Boy howdy that will make a few of the 327 boys pee in their shoes.
     
  10. BigDogSS
    Joined: Jan 8, 2009
    Posts: 766

    BigDogSS
    ALLIANCE MEMBER
    from SoCal

    They were typically applied to passenger-side valve cover big-block engines from 1965 to 1971-ish.
    I've heard they were also applied to some small block engines, but I've never seen one on a factory original engine. I have one on my 327.
     
  11. This one kind of stumps me, it looks like the casting number refers to a 1969 but the blue paint didn't start until 1977 01616_2gRYv3JDtZU_600x450.jpg
     
    lothiandon1940 likes this.
  12. 59bones
    Joined: Dec 13, 2010
    Posts: 311

    59bones
    Member
    from Illinois

    The word is "jibe". Sorry I'm grumpy today.
     
  13. .............Eat a Snickers man. You're not yourself when you're hungry.:D
     
  14. 40LUV
    Joined: Dec 30, 2003
    Posts: 1,532

    40LUV
    Member
    from Mid Jersey

    I always thought it was "jive" too. Learned a lot about car stuff here, now English lessons too. :p Got this from Wiktionary:

    "Jibe" and "jive" have been used interchangeably in the U.S. to indicate the concept "to agree or accord." While one recent dictionary accepts this usage of "jive," most sources consider it to be in error.
     
  15. squirrel
    Joined: Sep 23, 2004
    Posts: 40,064

    squirrel
    Member

    Looks like y'all figured it out.

    Neat motor. I have a #1 Team sticker on my 427...you see them on big blocks because all big blocks were made up in NY, but not very often on small blocks.
     
  16. 302GMC
    Joined: Dec 15, 2005
    Posts: 5,083

    302GMC
    Member
    from Idaho

    Seldom see Tonawanda production out west - Flint was way closer.
     
    squirrel likes this.
  17. pitman
    Joined: May 14, 2006
    Posts: 4,375

    pitman
    Member
    from Hampsha

    Looked at the list, wondered where the 327: 340 or 365 hp motors were called out.
    (All Vette mtrs, no doubt!) :rolleyes:
     
  18. 1946caddy
    Joined: Dec 18, 2013
    Posts: 1,054

    1946caddy
    Member
    from washington

    but the engine stand is the correct color.
     
    swade41 and Truckdoctor Andy like this.
  19. So is half the engine..Ha ha 00k0k_7MqIasdmrmn_600x450.jpg
     
    lothiandon1940 likes this.
  20. F.O.G
    Joined: Oct 31, 2006
    Posts: 237

    F.O.G
    Member
    from Pacific,Mo

    Corvette engine...no doubt, they all are.
     
    Clay Belt, XXL__ and Ron Funkhouser like this.
  21. Deuces
    Joined: Nov 3, 2009
    Posts: 15,040

    Deuces
    Member
    from Michigan

    Something I gotta ask.....
    Why is the block and heads painted Chevy blue and orange???o_O:confused:
     
  22. I think it was painted in the car, I just want to know why the casting numbers point to a 1969 block but it's blue which didn't start until 1977 ???
    Am I reading the numbers wrong ?
    To me it comes back as a 302, 327 or a 350, all in 1969.
     
  23. squirrel
    Joined: Sep 23, 2004
    Posts: 40,064

    squirrel
    Member

    What is the number? kind of hard for me to read because the picture is kind of small.

    Also what is the casting date number? and does it have anything stamped on the deck in the front pass side?

    40-50 years, lots of things can happen to an engine, including several paint jobs.
     
    lothianwilly71 likes this.
  24. Black Panther
    Joined: Jan 6, 2010
    Posts: 1,385

    Black Panther
    Member
    from SoCal

    I'm sure it got repainted during a rebuild or something...the long front pad you got the info from ended in the mid to later 70s...and the blue paint thing started after that. I go by the casting number, casting date and then assembly code in that order to find out what a engine originally was..
     
  25. The engine is for sale so I only have the photos given. To me it looks like 3932686
    20171229_235531.jpg
     
    Last edited: Dec 29, 2017
  26. squirrel
    Joined: Sep 23, 2004
    Posts: 40,064

    squirrel
    Member

    I think you meant 3932386.

    Yeah, that shows 1969 only.

    It's pretty easy to paint an engine blue.
     
    XXL__ and lothianwilly71 like this.
  27. Its advertised as a 350 out of a monza, not saying it was stock to the monza, just what the ad says.
     
    mike in tucson likes this.
  28. 20171229_235531.jpg Its hard to make out the 5th and 7th numbers.
     
  29. thirtytwo
    Joined: Dec 19, 2003
    Posts: 2,327

    thirtytwo
    Member

    I've seen marine and industrial motors painted all kinds of colors
     
  30. .................I didn't think that they put 350s in Monzas.:confused:...I thought they put that little low production 262 ci V-8.:confused:
     
    lothianwilly71 likes this.

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