[HUMMERcustoms.com/TAZ]

On tranny, diffs, and engine drop all fluids as well as filters where it applies. Go with Royal Purple synthetic. Will make a difference and tranny may run for no telling how long. I only know the fact of Royal Purple so not saying any other fluid would not achieve this but, it was proven on Horespower TV that making all the changes to Royal Purple got them I think it was 8 more HP and I forget the torque.

On tranny firm up the shift as much as You can without it being to uncomfortable. This will be increasing line pressure thus reducing band slippage as much as can be done without a full tranny upgrade. This will really increase life of tranny, even stock. You could also change to a Vette servo and a few other things on tranny which I'm sure Your shop will be aware of.

Would help to go to a 160 degree T-Stat since they will be removing some things in the area anyway where it is only about an hour tops change out anyway. Heat is the main enemy to increased boost and detonation. Ask installers to do a throttle body heater hose by-pass. In the lower half of the USA this is not really needed as it just heats up throttle body temp raising fuel temp to aid in cold weather starts. I have done this mod to my H2 and first time on my 99 Silverado.

An electric fan conversion would be helpful sometime down the road. An OEM electric fan conversion can be used from I think the 3/4 ton GM trucks and also can be wired into PCM so that it will turn off and on by temp sensor using the factory programing. The function is already there for H2 just not used. You just have to have whoever tunes the rig turn that on. You do have to make some tranny line relocation or alteration that is. Nothing that is a big deal. You will need a wiring harness from Allen Nelson at nelsonperformance.com in Texas to run the dual fan setup.

Get boost and air fuel ratio gages just to be on the safe side and learn to check them as You do temp, oil, and other gages. You should not be romping it all the time once the new wears off. But, enjoy allot at first.

I have done all these things to my H2 and more so I feel comfortable in recomending these things. You do not have to do all at once but, standard rule i have lived by and learned is that once the mechanic is there and has somethings apart it does not cost much more to go ahead and get some other things done while he is working in the area.

I hope this has been helpful and if i can help further let me know with a PM and I will try to have an answer or find it out through connections if i do not know already. I'm sure i may have not covered some things but, hey I have been quite sick after thinking things were getting better so I could over look a good suggestion. I know i'm not wrong with what i mentioned here but, may have left out a little trick or two.

Congrats and You will enjoy the change if done right. In Dragon and my custom process we left all branding off for a cleaner show look but now with the supercharger badge to add on from range rover i wish now we had left the H2 on the sides. Perhaps we can come up with something in a painted on ghost spray effect like you can do with flames. Put it on each side of the reverse cowl hood scoop also i think would be nice.

TAz