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Thread: Cadillac 429 deck height

  1. #1
    Member JUNIOR BUILDER
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    Cadillac 429 deck height

    Does anyone know the standard OEM deck height of a 1967 Cadillac 429 cid block. This engine had been previously machined, as it is +.030" over, and there is a .017" difference in deck heights. Thanks

  2. #2
    Senior Member RACING JUNKIE TheYellaBrick's Avatar
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    Re: Cadillac 429 deck height

    Quote Originally Posted by bubbabbc
    , and there is a .017" difference in deck heights. Thanks
    This much difference between each SIDE ???!!!
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  3. #3
    Member JUNIOR BUILDER
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    Yes, but this is not uncommon with GM blocks. Someone has been into this engine, but we don't know if they machined the deck surfaces. GM's are by far the worst machined blocks of all the manufacturers. We have seen blocks off as much as .025" front to back, side to side. In the big blocks, the cam bearing bores and lifter bores are usually bad also.

  4. #4
    Go to this web site. It has everything you will ever need for your caddy!
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  5. #5
    Senior Member RACING JUNKIE
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    Thats not a big deal, unless you have such large engine your cam tollerances are massive. We have ran domed pistons on one side of a spec motor and flat tops on the other side with no issues.


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