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Go Back   Hummer Forums by Elcova > Hummer H2 Discussion Forums > Technical Discussion and Customizing your H2

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  #1  
Old 01-23-2012, 05:52 AM
rogco rogco is offline
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Default injector upgrde info

so ive been doing lots of reading and have no idea what to step up to in injector size . Im looking at putting on ls6 heads ported witha mid low cam and kennybell boost a pump and i know the stock injectors are already maxed out so after doing those up grades what injector size should i step up too
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Old 01-23-2012, 12:22 PM
Hellz Hellz is offline
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Default Re: injector upgrde info

let me know what you find out on this..

i would be somewhat interested in doing this same kind of setup..
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  #3  
Old 01-24-2012, 04:30 AM
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Default Re: injector upgrde info

Have you looked at what the 6 liter truck heads are capable of?? There is a reason alot of people are buying those...

You are going to need a custom tune on your ecm. check out performancetrucks.net You should easily find a matched component setup for what your trying to do.

I'd budget in your build a new tranny...they dont last long adding additional power to them. You will squeak a little more life out of it if you upgrade the servos- You dont need to pull the tranny to do this.
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Old 01-24-2012, 10:17 AM
rogco rogco is offline
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Default Re: injector upgrde info

I've already installed the servos and have a bigger pan and rad for tranny plus I have a shift kit sitting in my shop waiting to go in. So tranny should hold for a bit
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Old 01-24-2012, 05:49 PM
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EuroHummer EuroHummer is offline
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Default Re: injector upgrde info

Call FAST and tell them your setup. They will recommend the proper injectors. Just had to change the connectors on mine to make them work.
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2003 H2, 408 CI, K1 Forged 4" stroke crank, K1 6.125" forged rods, Wiseco X-Series 0.30 forged pistons, Schneider cam, FAST 102mm LSXRT, precision flow injectors, Comp Pro Magnum rockers, SA Gear DR timing set, ARP main studs, 90mm ETC TB, Airaid MIT, MSD Coils/wires, Dynatech Headers/high flow cats, Magnaflow, Jessie James Black Widows 20x9, Nitto Dune Grapplers 37", Fabtech 6" lift, CK Performance XHD 4l70e and 4.56 Gears
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Old 01-25-2012, 02:38 AM
rogco rogco is offline
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Default Re: injector upgrde info

They sell the connectors also or where did you get tose connectors
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Old 01-25-2012, 05:15 AM
glennf1 glennf1 is offline
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Default Re: injector upgrde info

I've read good things about Mad Dog Transmissions. Anyone used them or know anything about them for tranny upgrades? www.maddogtransmissions.com
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Old 01-25-2012, 05:29 PM
rogco rogco is offline
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Default Re: injector upgrde info

eurohummer , how do you like running gears for timing instead of chain . i want to end up ith your set up down the road or someting like it
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Old 01-26-2012, 06:08 PM
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Default Re: injector upgrde info

FAST sells the connector ends you need.

I am running an SA Gear double roller set, not a gear drive.
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2003 H2, 408 CI, K1 Forged 4" stroke crank, K1 6.125" forged rods, Wiseco X-Series 0.30 forged pistons, Schneider cam, FAST 102mm LSXRT, precision flow injectors, Comp Pro Magnum rockers, SA Gear DR timing set, ARP main studs, 90mm ETC TB, Airaid MIT, MSD Coils/wires, Dynatech Headers/high flow cats, Magnaflow, Jessie James Black Widows 20x9, Nitto Dune Grapplers 37", Fabtech 6" lift, CK Performance XHD 4l70e and 4.56 Gears
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Old 01-27-2012, 12:45 AM
glennf1 glennf1 is offline
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Default Re: injector upgrde info

Quote:
Originally Posted by rogco
eurohummer , how do you like running gears for timing instead of chain . i want to end up ith your set up down the road or someting like it

Running gears is really going to be noisy, but then again that might not be a bad thing
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Old 03-15-2012, 01:40 AM
rogco rogco is offline
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Default Re: injector upgrde info

so how do i get my hands on a custom tune there is no shops within 800km radius that does anything like that . and dont feel right about doing my own with the hptunners program
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  #12  
Old 03-15-2012, 02:36 AM
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Default Re: injector upgrde info

go to ls1tech.net or a sister site performancetrucks.net There are a number of mail order tuners between the two sites. They have done so many at this point, you tell them your mods and they get it pretty dead on.
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  #13  
Old 03-15-2012, 02:51 AM
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Default Re: injector upgrde info

thank you
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