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Thread: Early Vs Late GTE Blocks

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  1. #1
    Grumpy Old Man
    IJ.'s Avatar
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    Default Early Vs Late GTE Blocks

    Block differences are in the pics below click them to enlarge I've written what to look for on em, the light block is an 87T the Heavy is my New 93T from Toyota.

    Heavy


    Light


    Heavy


    Light


    Crank differences.

    6m


    7M


    #16 Head

  2. #2
    Established 1994
    Nick M's Avatar
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    Default Re: Early Vs Late GTE Blocks

    How about the 12 or so castings for the head?
    Have you loosened Orion's belt yet? The opposite of right is both left and wrong.

    http://www.thereligionofpeace.com/

  3. #3
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    Default Re: Early Vs Late GTE Blocks

    Ian, your a BEAST
    Cool thread btw.

    Sam
    Single turbo 1JZ......Just the basics

  4. #4
    Grumpy Old Man
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    Default Re: Early Vs Late GTE Blocks

    Quote Originally Posted by Nick M View Post
    How about the 12 or so castings for the head?
    Only have pics for a couple of different one's Nick, my last head was a "#16" and the really early ones were unnumbered so there are a least 17 revisions.

    Quote Originally Posted by 87M-GTE View Post
    Ian, your a BEAST
    Cool thread btw.

    Sam
    Figured it'd be a good thing to sticky while it was on my mind

  5. #5
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    Default Re: Early Vs Late GTE Blocks

    Quote Originally Posted by IJ. View Post
    Only have pics for a couple of different one's Nick, my last head was a "#16" and the really early ones were unnumbered so there are a least 17 revisions.
    A sticky regarding the cyl head differences would be cool too.
    Also the casting number info and what not..

    Great job Ian!

    Sam
    Single turbo 1JZ......Just the basics

  6. #6
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    Nick M's Avatar
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    Default Re: Early Vs Late GTE Blocks

    Quote Originally Posted by IJ. View Post
    Only have pics for a couple of different one's Nick, my last head was a "#16" and the really early ones were unnumbered so there are a least 17 revisions.
    I was only joking about posting all the heads. I have seen a few castings here and there posted. Like the divided runner and open. One of them was a number 9, but I couldn't tell you which.
    Have you loosened Orion's belt yet? The opposite of right is both left and wrong.

    http://www.thereligionofpeace.com/

  7. #7
    Grumpy Old Man
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    Default Re: Early Vs Late GTE Blocks

    Main differences are the Intake dividers Sam, most of the other changes are running changes not performance based.

    Would need to flow both types to understand if one is better than the other but I suspect the runner change is more an emissions thing.

  8. #8
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    Default Re: Early Vs Late GTE Blocks

    Is this looking like the 'wider rail' ?



    ---------- Post added at 02:13 PM ---------- Previous post was at 02:09 PM ----------

    So It's only got extra ribs on ONE side? I was confused looking @ these two pics..

    Extra ribs:


    No extra:


    Safe to say I have the later block? It came with a 6m crank in it but I suppose the guy I bought it from could have done that.

  9. #9
    Grumpy Old Man
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    Default Re: Early Vs Late GTE Blocks

    Quote Originally Posted by Nick M View Post
    I was only joking about posting all the heads. I have seen a few castings here and there posted. Like the divided runner and open. One of them was a number 9, but I couldn't tell you which.
    Ahhh thought you were being serious due to the lack of a !

    Quote Originally Posted by whitemike View Post
    Is this looking like the 'wider rail' ?


    [/COLOR]So It's only got extra ribs on ONE side? I was confused looking @ these two pics..

    Extra ribs:

    No extra:


    Safe to say I have the later block? It came with a 6m crank in it but I suppose the guy I bought it from could have done that.
    Yes that's a Late block, the only differences are as noted in my pics in post #1, they were all taken on the same night as I had both blocks on stands just before assembly so we were able to examine them carefully.

  10. #10
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    Default Re: Early Vs Late GTE Blocks

    nice thread keep it up, i remember some corolla motors are like that, like the 4afe, and the 7afe, 7a has more ribs, good motors to make a GE out of it

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