BBC identification ??
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BBC identification ??

  1. #1
    Senior Member 1975sleekcraft's Avatar
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    Default BBC identification ??

    i bought a 75 Eliminator bubble deck with a 454. sounds real healthy. looking for all the specs on the motor(if it were stock).

    # on the head deck CFO7533C the last letter is a guess...looks like an upside down and backwards J...(bad stamp)

    # on the back of the block 3963512

    cast in the top of the heads(under valve covers) HI-PERF , GM1T , 3964291

    ( after lookin at these #'rs i am thinkin it's a 396 )

    any help would be awesome...
    any web sites that could help me would be awesome...
    Thanx for any and all input!!!!

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    New here Beer:30's Avatar
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    Quote Originally Posted by 1975sleekcraft View Post
    i bought a 75 Eliminator bubble deck with a 454. sounds real healthy. looking for all the specs on the motor(if it were stock).

    # on the head deck CFO7533C the last letter is a guess...looks like an upside down and backwards J...(bad stamp)

    # on the back of the block 3963512

    cast in the top of the heads(under valve covers) HI-PERF , GM1T , 3964291

    ( after lookin at these #'rs i am thinkin it's a 396 )

    any help would be awesome...
    any web sites that could help me would be awesome...
    Thanx for any and all input!!!!
    Depending on the year of the motor, it is probably a 427.


    Depending on the CRANK inside - it's either a 427 or 454. A 396 crank inside a 454 block makes a 427. So it's AT LEAST a 427.
    BLOCK:
    427/454 GM Bare Block Casting # 3963512
    1969-1971
    2 Bolt Mains

    HEADS:
    3964291 1969-71 427 2.19 1.88 Closed 109
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    Senior Member 1975sleekcraft's Avatar
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    Default head deck #rs

    so someone asked if the head deck # CF07533C could be CEO7533C. they said the CE stands for crate motor. lets say it is CEO7533C , and it is a crate motor. is there anyone out there that can tell me what crate motor it is??????????

    or a website to find out what these #rs are telling me??????????

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    Half a bubble off jrork's Avatar
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    Dave, did you check out Mortec? I'll dig thru my books and see if I have anything.

    edit.... Okay, my books say

    Block
    3963512 is a 9.8 deck 454 from 70-76

    Head
    3964291 is a 106.9cc chamber, 2.19/188 INT/EXH valve, used on 396, 402, 427, 454 motors.

    Sorry I couldnt be much more help but I would definately check Mortec too.


    Beer30 might have something there too. Is the motor still in the boat?
    Last edited by jrork; 11-24-2011 at 11:58 AM.

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    Some guy obnoxious001's Avatar
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    Quote Originally Posted by jrork View Post

    Sorry I couldnt be much more help but I would definately check Mortec too.

    I think Mortec is a thing of the past,, gone for a long time.

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    Senior Member Oldsquirt's Avatar
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    Quote Originally Posted by jrork View Post
    Dave, did you check out Mortec?
    Bad news, Mortec.com is long gone.

    Good news, Mortec.com can be accessed through the web archive at Internet Archive: Wayback Machine

    So, here's the link to the archived Mortec . Faster if you click the "impatient" button on lower right of the page.
    Last edited by Oldsquirt; 11-24-2011 at 12:11 PM.

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    Some guy obnoxious001's Avatar
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    Quote Originally Posted by 1975sleekcraft View Post
    so someone asked if the head deck # CF07533C could be CEO7533C. they said the CE stands for crate motor. lets say it is CEO7533C , and it is a crate motor. is there anyone out there that can tell me what crate motor it is??????????

    or a website to find out what these #rs are telling me??????????
    A "crate engine" is one that was not originally installed in a car, as in "it came in a crate".

    I think Mortec is long gone, but the casting numbers do more to tell you about what the block and heads are, since it's likely it's been rebuilt since it was originally made. There is a date code on the rear of the block,, opposite side from the casting number, which would help you identify whether it was originally a 427 or 454, but of course the rotating assembly may have been changed. If it's a 1969 427 block, you might be able to sell it to a car guy and get a premium for it.

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    Quote Originally Posted by Oldsquirt View Post
    Bad news, Mortec.com is long gone.

    Good news, Mortec.com can be accessed through the web archive at Internet Archive: Wayback Machine

    So, here's the link to the archived Mortec . Faster if you click the "impatient" button on lower right of the page.
    That's pretty cool!

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    Senior Member Oldsquirt's Avatar
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    Regarding the engine ID # of "CE07533C", I found this info on another site..........."Note: CODE CExxxx (counter or crate engine) was used from 1968 to current year. It represents any CID and is used to indicate this particular engine was replaced under Warranty. It is a direct replacement for the original equipment. It doesn't indicate what the original equipment was." I would expect that engines shipped to marine suppliers might also have been marked as such.
    Last edited by Oldsquirt; 11-24-2011 at 05:27 PM.

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  13. #11
    Senior Member 1975sleekcraft's Avatar
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    Default date code

    Quote Originally Posted by obnoxious001 View Post
    A "crate engine" is one that was not originally installed in a car, as in "it came in a crate".

    I think Mortec is long gone, but the casting numbers do more to tell you about what the block and heads are, since it's likely it's been rebuilt since it was originally made. There is a date code on the rear of the block,, opposite side from the casting number, which would help you identify whether it was originally a 427 or 454, but of course the rotating assembly may have been changed. If it's a 1969 427 block, you might be able to sell it to a car guy and get a premium for it.
    so the date code opposite of the casting # is J28 8

    what do you make of this????

    strangely the last 8 is upside down---bottom of the 8 is bigger on the J28 and the top of the 8 is bigger on the last one. there is a space inbetween the two 8's

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    Jackwagon Patrolman Rexone's Avatar
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    Mortec is gone.

    Mortec archive is not gone.

    Check "tech links" at the top of the On the Dyno forum. Lots of good links there. I recently updated and verified all the links.

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    Senior Member Oldsquirt's Avatar
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    Quote Originally Posted by Rexone View Post
    See my post above(#6)

  16. #14
    Senior Member Oldsquirt's Avatar
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    Quote Originally Posted by 1975sleekcraft View Post
    so the date code opposite of the casting # is J28 8

    what do you make of this????

    strangely the last 8 is upside down---bottom of the 8 is bigger on the J28 and the top of the 8 is bigger on the last one. there is a space inbetween the two 8's
    You sure that the upside down 8 isn't actually a 9? A good clear pic would help. Assuming it is a 9 , that would indicate a casting date of October 28, 1969.

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