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Thread: H3 hummer I 5 3.5

  1. #11
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    Dieselz28, pull the tune on your H3 and Ill give you some pointers. I havent tuned a P12 yet but I can at least give you a hand with the basic things like removing TM and firming the shifts up a little bit.
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

  2. #12
    Junior Member dieselz28's Avatar
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    O.K. sounds good. A good tune to wake that thing up would be great. That thing is a blast to drive. I have always liked the H3, but I didn't realize HOW MUCH fun it is until we got one! Tried talking the wife into swapping it in for an Alpha but shes not into it. Guess I'll have to do a Duramax swap when the 4.5L comes out!! I'll hook up to it this weekend and PM you.

  3. #13
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    Default 4.5?

    Let us know when the 4.5 is scheduled for release...

    Is that part of the Hummer China sale?

  4. #14
    Lifetime Member Chevy366's Avatar
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    Quote Originally Posted by dieselz28 View Post
    O.K. sounds good. A good tune to wake that thing up would be great. That thing is a blast to drive. I have always liked the H3, but I didn't realize HOW MUCH fun it is until we got one! Tried talking the wife into swapping it in for an Alpha but shes not into it. Guess I'll have to do a Duramax swap when the 4.5L comes out!! I'll hook up to it this weekend and PM you.
    What is this about a Diesel version of the Isuzu :http://forum.efilive.com/showthread.php?t=5684(same 360 platform as TB)?
    The Alpha is nice , almost had the wife talked into trading her TB for one , but she liked the TB to much .
    I have a couple of P12 tune scripts for a 4.2L (not the same as the I5) , post up your tune lets us have a look at it .
    2005 1500 HD , Custom OS3 SD tune .
    2006 Trailblazer
    Dinosaurs and Plants gave their lives so that we may drive , long live fossil fuel .

  5. #15
    Junior Member dieselz28's Avatar
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    The 3.0L is the motor that Holden uses for their version of the Colorado. Just about every other country that sells a version of the Chevy Colorado has a diesel. The 4.5L is the Duramax LMK for the half ton trucks 310HP 520TQ. Its a pretty wild motor the exhaust and intake ports are reversed so the exhaust manifold is where the intake should be. Blowing straight up into the turbo. It was designed to fit between the struts of the new GM frame. Its the same size as the LS V8's. So anything a SB will fit in, it will fit in it as well. HHMMM!

  6. #16
    Junior Member dieselz28's Avatar
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    Here is GM's line up and 4.5L photos. The 2.9L is gonna be in a Caddy first.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  7. #17
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    Too bad the 4.5L is put on "indefinite hold" according to GM...man Id love to drop one of those into my TB and have one bada$$ midsize SUV. The reverse flow heads contribute to its outstanding power output, Ford is using the same principle along with a CG iron block for their new in-house designed and built PowerStroke due out in the 2011 MY.
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

  8. #18
    Lifetime Member Chevy366's Avatar
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    Quote Originally Posted by ScarabEpic22 View Post
    Too bad the 4.5L is put on "indefinite hold" according to GM...
    Do what ? , GM and it's infinite wisdom astounds me sometimes (like killing the 360 platform).
    That 4.5L sounds like a awesome power plant , but as with anything never get the first generation of that product , wait for the guinea pigs to work out the kinks .
    But it still would be interesting to see a TB or Colorado/Canyon with one in it .
    2005 1500 HD , Custom OS3 SD tune .
    2006 Trailblazer
    Dinosaurs and Plants gave their lives so that we may drive , long live fossil fuel .

  9. #19
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    With the luck GM has had with prior diesel engines. No wonder they will enter cautiously to new models.

  10. #20
    Lifetime Member GMPX's Avatar
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    You guys know that GM has a nice range of smaller (sub 3.0L) Diesel engines available everywhere except the USA?
    Dmax V6 plus some other 2.0L 4cyl stuff.
    The 4.5L is going to be an after market gold mine for GM if it ever arrives, I bet they would sell 1,000's and 1,000's of those as a create motor for conversions.
    I no longer monitor the forum, please either post your question or create a support ticket.

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