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Need head identification please

This is a discussion on Need head identification please within the Internal Engine forums, part of the LSx Technical Help Section category; Ok so when i bout the 96' LT1 it had a 383, and came with seperate I have a heads ...

  1. #1
    Bat Outta Hell
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    96 Z28Ttops, 98 Z28 Conv.

    Need head identification please

    Ok so when i bout the 96' LT1 it had a 383, and came with seperate I have a heads that are aluminum... I was hoping you guys could answer my question, are they same as stock or better?? Casting number is #10128374.
    All the info i have on the heads is this:

    68cc reverse flow, 175 intake ports, 68 cc exhaust ports thats all the info i could find guys...

  2. #2
    Senior Member mrr23's Avatar
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    according to mortec.com that casting number is a stock head.

    http://www.mortec.com/castnum.htm

    10128374...92-up...350..........Gen.II LT1, 53cc, angle plug,
    aluminum, reverse flow cooling,
    175/68cc ports

    now, if those heads you have now are ported with larger valves, yada, yada, yada, then they will be better than stock. otherwise, they are stock heads.

  3. #3
    Bat Outta Hell
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    So the stock lt1 heads are Aluminum as well??

  4. #4
    Senior Member mrr23's Avatar
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    yes.

  5. #5
    Bat Outta Hell
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    Alright man, thanks...my question is, my ported and polished heads would make an estimated hp/tq over the stock non-ported and polished....thanks

  6. #6
    Senior Member mrr23's Avatar
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    dark bowling green
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    17-20 rwhp

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