well i am assuming this is the 550hp version.. had in dyno'd and they were able to get the torque number...but the big mud tires were creating to much drag on the rollers...so the HP numbers were not fully reached but they said the torque numbers were very impressive for a awd vehicle ..so i was happy with that... 87k on the mileage

 

Do you have any idea if its running the stock 4l60 series tranny? Or did they drop an 80 series in it?

There is no way its running factory internals w 80xxx miles. That's some pretty sweet power you have on tap there.

 

how would i check that??

 

Well, you are mistaken on this part.
I had an 06 with a custom built 6.8 L running 500 HP on stock tranny, stock rear and front diff and stock transfer case. Put 170k miles on it and it ran like new all the way until I sold it.
I am not saying there isn't any room for improvement because there always is.

 

Ditto on my 500+ hp 500 ft. lb. dynoed 03' although i did upgrade the original trans it lasted 100,000 miles.

 

You guys have just been lucky w your trannys or didn't run the **** out of them.

 

I tow also.

 

You need to go buy a lottery ticket then.

 

Hi This is Steve I talked to you on the phone about 6 months ago. That was my old hummer and I am still trying to track it down and see if I could buy it back. Have you come across any leads that may help me find its whereabouts? (509)430-7733

 

I owned this rig for years and sold it when my wife was 8 months pregnant under the promise I could buy it back if they ever sold it. I am still trying to find it. If you see it please let me know (509)430-7733 Steve