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Technical I need a little help with SBC identification

Discussion in 'The Hokey Ass Message Board' started by HOTRODPRIMER, Feb 15, 2023.

  1. I got a phone call this morning from a fellow Tri-City Rod & Custom members wife, it seems her husband has been suffering from alzheimer's which has gotten worse, he has a nice 34 Chevy sedan and has driven it for a long time, James use to race asphalt & dirt track before settling into hot rods.

    Last year he ordered a set of headers from Summit and he son was going to install them last week, he opened the package and knew they were not going to work, they were for a BBC.

    James wife called me asking if I remembered the engine he used, he had told me many years ago and it seemed like he used something like a 307 or something like that, it is a strong running engine and I know it has angle plug heads, I'm fairly sure they are aluminum.

    I'm just trying to to help them figure out the engine, am I off base with a odd engine like a 307? HRP
     
    dana barlow likes this.
  2. Johnny Gee
    Joined: Dec 3, 2009
    Posts: 13,979

    Johnny Gee
    Member
    from Downey, Ca

    1968-73 Chevy had them.
     
  3. 1934coupe
    Joined: Feb 22, 2007
    Posts: 5,204

    1934coupe
    Member

    HRP your question is confusing, if the headers are BBC and the engine is SBC wether it be 307 or 350 the headers are the same for SBC except for the new LS stuff. Angle plug aluminum heads fit from 283 to 400 as far as I know.

    Pat
     
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  4. squirrel
    Joined: Sep 23, 2004
    Posts: 59,101

    squirrel
    Member

    If the engine is a small block Chevy, and no one remembers for sure what it is...it could be anything, really. No way to know without opening it up or looking at receipts.

    Seems to me that it's probably not a good time to be installing headers on it? if he can't remember what it is.
     
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  5. catdad49
    Joined: Sep 25, 2005
    Posts: 6,848

    catdad49
    Member

    Casting numbers should help, then whatever is stamped on the front pad.
     
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  6. SEAAIRE354
    Joined: Sep 7, 2015
    Posts: 552

    SEAAIRE354
    Member

    As said if it is in fact a small block , heads are the same. But some headers don’t work as well with angled plug heads. They will usually state what they will fit.
     
    olscrounger likes this.
  7. theHIGHLANDER
    Joined: Jun 3, 2005
    Posts: 10,570

    theHIGHLANDER
    Member

    I recall several header types for SBCs with angle plugs, they usually needed a heat n beat by the plugs to get to em. But I might be thinking race headers too so...
     
    SS327 and squirrel like this.
  8. The headers were ether ordered wrong, remember the alzheimer's or summit shipped them wrong which I doubt, we realize all sbc are basically the same. HRP
     
  9. Jim, basically the son is trying to figure out what engine started out as in the 34 Chevy, he does remember his dad having a stroker engine in his 64 El Camino.

    James son wants to replace the current leaky headers on the car to take his Mom & Dad out for their wedding anniversary next month. HRP
     
    Last edited: Feb 15, 2023
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  10. Moriarity
    Joined: Apr 11, 2001
    Posts: 35,659

    Moriarity
    SUPER MODERATOR
    Staff Member

    we need pictures, stamped numbers and casting numbers. There really is no way to tell what it is with no information
     
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  11. Just got the call this morning, I will try and get more information, I realize at this point no one knows what has been done internally. HRP
     
    dana barlow likes this.
  12. Fordors
    Joined: Sep 22, 2016
    Posts: 6,255

    Fordors
    Member

    0CAE82EC-B365-442F-844C-2D40048D14F4.jpeg

    What might have been done internally is not a factor. The larger concern is clearing the frame, steering, etc. and as said before the angle plug heads too.
     
    Moriarity likes this.
  13. squirrel
    Joined: Sep 23, 2004
    Posts: 59,101

    squirrel
    Member

    C'mon Denny, you know we always need pictures!
     
  14. OK Bob :D, I know that!
     
    Last edited: Feb 15, 2023
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  15. Johnny Gee
    Joined: Dec 3, 2009
    Posts: 13,979

    Johnny Gee
    Member
    from Downey, Ca

    307 now Bob. Who’s memory again? :)
     
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  16. 47chevycoupe
    Joined: Dec 25, 2007
    Posts: 543

    47chevycoupe
    Member
    from Finland

    If he raced and used some of those race heads its possible that the heads could have spread exhaust ports.
     
  17. squirrel
    Joined: Sep 23, 2004
    Posts: 59,101

    squirrel
    Member

    my memory is getting pretty bad too. I empathize.
     
    olscrounger likes this.
  18. Johnny Gee
    Joined: Dec 3, 2009
    Posts: 13,979

    Johnny Gee
    Member
    from Downey, Ca

    Mines short term, like just a few seconds ago. Makes me worry about the future then all’s normal again for some reason. But ya, not fun.
     
    Petejoe likes this.
  19. guthriesmith
    Joined: Aug 17, 2006
    Posts: 11,371

    guthriesmith
    ALLIANCE MEMBER
    1. H.A.M.B. Chapel

    Man, I quit paying attention for a few minutes and everyone’s names are different as well as big block Chevy headers might not fit a small block? Maybe my memory is going too. :eek:
     
  20. Would it help maybe to have some pictures of the old headers, especially if they were removed from the car?
     
    squirrel likes this.
  21. Budget36
    Joined: Nov 29, 2014
    Posts: 14,983

    Budget36
    Member

    I think have the son pull the current headers off, do a few measurements, send you some pics and maybe they can be identified.
    But one question, where are they leaking, and can they be repaired? Well, two questions and a statement;)
     
  22. Some aftermarket heads for SBC take odd ball headers. For example the Brodix heads on the Raven's 427 require Stahl flanges.

    That said for the most part a small block is a small block. I have had a problem in the past with block hugger headers on angle plug heads. We ended up dinging the tubes a little bit for clearance. Then when there was more cash the man bought better quality headers. Just avoid the cheap ones and you should be golden.
     
    theHIGHLANDER likes this.
  23. indyjps
    Joined: Feb 21, 2007
    Posts: 5,393

    indyjps
    Member

    All sbc's are from wrecked corvettes :D
    I'm surprised there's any corvettes still on the road.

    Looking forward to more info.
     
  24. I was just messing with Jim, I know he ain't Bob. :D

    After talking with Henry tonight he had one of his friends check the numbers on the block and it turns out it is a 1969 307 sbc. HRP
     
    guthriesmith, Johnny Gee and squirrel like this.
  25. Well, then it was a factory stroked 283.
     
    Deuces likes this.

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