454 BBC Compression test
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454 BBC Compression test

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    Default 454 BBC Compression test

    I did a compression test on my 1974 Campbell BBC the numbers were a low of 140 and a high of 150. i am wondering what a 1974 stock BBC should be. My pops and other shop guy said those are good number. I am just trying to back up my numbers with something solid before moving onto the next project.

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    Quote Originally Posted by srfinatsunset View Post
    I did a compression test on my 1974 Campbell BBC the numbers were a low of 140 and a high of 150. i am wondering what a 1974 stock BBC should be. My pops and other shop guy said those are good number. I am just trying to back up my numbers with something solid before moving onto the next project.
    The camshaft plays a big part in the cranking pressure of any engine. There is no way to know what the camshaft in you deal is, put the numbers are not out of range by any means.



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