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Thread: What are the differences between 4g63 turbo vs non turbo heads?

  1. #1

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    What are the differences between 4g63 turbo vs non turbo heads?

    There are lots of non turbo 2g heads out there, will that make good power on a 6 bolt 4g64 block or should I hold out for a turbo head? My plan is to do turbo this engine and put it one of my 1st gen.

  2. #2


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    you're in the wrong place, check in on the eclipse forums....but as far as I know there isn't a difference? other than non-turbo eclipses have a 420A motor...totally different.

  3. #3

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    Check out Project Zero G and Hot Rod Coffee Shop when you do the head swap, then sell me your diesel when you're done.

  4. #4

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    The diesel is my other truck. Its not really for sale but as with anything, it could befor the right price.

    I want to remove the g54b from my my other 86, that will be for sale for sure one of these days. Im not removing it just yet in case I need to move it to the other side of the garage or something.

  5. #5

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    The only difference betwwen the turbo and non turbo 4G63 heads is the cam shafts. The Non turbo motors had a much less aggressive cam profile. As for a non turbo 4G63 2G there is no such thing, the n/a 2G used a Chrysler engine. 420A as stated by Mike^.
    There is much debate whether or not the 2G or 1G, 4G63 cylinder head design is better. (smaller intake ports vs. larger) But we wont get into that....

  6. #6

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    Thanks for the comments. I picked up a 1g turbo head the other day at the yard with intake and cam sensor for 200

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