heavy towing review with 190/75s ahd powermax

[speedracer1000]

so i went and picked up a truck for my buddy the other day about 2 hours away in northern pa, took the 25ft flatbed which is 5200lbs and the truck i picked up was around 7800 id say, so i was somewhere around 21,000 total weight. i was running erics tow tune and the truck pulled extremely well and ran rather cooler than i thought. had quite a few pretty steep mountain roads too pull, i decided i was gonna push the truck a lil just to sorta see how it was gonna do. i ran up through there about as fast as i could without bein a total idiot, with all the turns and such, reaching speeds of up to 55mph, could accelerate pretty easy and egts never went over 1250. i dont think i went over 3/4 throttle as i didnt feel the need, now im sure if i flogged the crap out of it the egts prob would have went up pretty high. i was kinda impressed, i never thought it would run that cool and do as well as it did. my mods should all be in the sig but major mods are warren 190/75s, powermax with batmowheel, reg return, no ficm tuning, just erics tow tune. wanted to get some videos of the monitor but wasnt thinkin about it at the time. what do yall think?

 

[speedracer1000]

i forgot to mention that i did notice the truck is a little laggier and runs hotter when its in high gear with the converter locked and ur tryin to run 55 on a decent grade. seems like if u try to maintain speed or accelerate slightly and not let it downshift it will run a little warmer, say 1300-1350 or so before it unlocks then once it does its ok u can do whatever. but if u cruise 70-75 mph it will hold that speed on grades and you can accelerate no problem without it downshiftin (up to a certain point obviously) and gettin too hot. keep in mind i have 4:30 gears and 35s so it this is just what my truck does with what i have

 

[windrunner408]

This sounds good man. Glad to hear you had such great results. I am sure the 4.30s are what is helping keep the rpms up.

 

[speedracer1000]

yea i never noticed much difference in power with them, but they make a difference towing im sure

 

[Redneck6.0L]

When setting up trucks for non vgts, I tell guys to look at what rpm they average during towing, then adjust gearing so your between 2-2200rpm when they do most of there towing. These motors love to run there. 55mph in overdrive 3:73's and 35's runs like 16-1700rpm, they are sluggesh

 

[MorganY]

My 190/75's and power max got hot quick. Towing 9k on Eric's tow file, it was pretty much sustained at 1000° and would hit 1300 easy if I tried to maintain 65mph up a grade.

I bet those 4.30's are the key.