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Thread: What kind of problems with the 867 pontiac sbc 23 deg heads?

  1. #1

    What kind of problems with the 867 pontiac sbc 23 deg heads?

    on another post, people said there were some problems with the old867 pontiac nascar heads and also someone said they would never use a power adder with those heads. Please tell me what kind of problems those heads had in the past and the problems with using power adders on those heads.

  2. #2
    Senior Member SENIOR BUILDER
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    There's no problems using power adders with those heads, ..
    they are good heads.

    BUT, .. if you are going to buy a used NASCAR head you need to
    have a professional check the heads out. Often that stuff is sold
    by teams cause it's worn out or was damaged in some way.

    Just use proper caution before building an engine with them, . .
    have them checked out.

    Curtis
    ----------------------------------------
    Race Flow Development
    Simultaneous 5-axis CNC Porting
    http://www.raceflowdevelopment.com

  3. #3
    Senior Member MASTER BUILDER
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    The only problem with them is 20 year old technology,if your looking for power 23 deg heads would be like buying a 20 year old computer,they will work, but nowhere near like modern stuff.Head porters have made huge advances in the last 20 years.Bill
    Hendrens Racing Engines
    1310 U.S. Hwy 221 North
    Rutherfordton N.C. 28139
    828-286-0780 Bill, Steve, Mike
    www.hendrensracingengines.com

  4. #4

    problem with using later model heads- no blower manifold ava

    if there were blower manifolds available besides the outrageous sheet metal ones, i would buy later model heads, but when using a blower and injector on alcohol, i rarely see anything other than 23 degree stuff on those blown alky engines. Is it because they make enough power for what there doing and the cost of newer stuff is not necessary?
    Also those pontiac heads i was talking about buying were a brand new set hendricks had on the shelf and were never used. A friend of mine bought them new and have only 50 passes in a 388 monza that ran 8.50's in the quarter on straight motor. Car weighed around 2200 lbs.
    Is there really much advantage going with the newer 18 degree, 15 degree, or whatever when your running blown alcohol?

  5. #5
    Senior Member SENIOR BUILDER
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    Oct 2004
    Location
    Woodbridge, VA
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    Re: problem with using later model heads- no blower manifold

    Quote Originally Posted by badbug3
    Is there really much advantage going with the newer 18 degree, 15 degree, or whatever when your running blown alcohol?
    You have to decide what your goals are and let that dictate what parts
    you use to get there.
    There is nothing wrong with 23* heads at all, ..
    if that is what fills the need. It's silly to call them 20 year old technology.

    ( The first Americian V8 was built in 1914 and the Chevy small
    block as we know it showed up in 1955)

    yes 18*, 15* or 13* heads are better in some ways, .. a better flowing head
    makes power in a boost application, .. better heads make power
    in any application, .. but is it needed to reach your goals?

    From my understanding, .. you want to build a blown alky small
    block for a boat, .. but this is a week end fun boat and not for
    some racing class, .. you want a reliable amount of HP and not
    a ton a maintenance?

    Curtis
    ----------------------------------------
    Race Flow Development
    Simultaneous 5-axis CNC Porting
    http://www.raceflowdevelopment.com

  6. Racing Junk


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