lukeapre
Newbie
To start, I've got a k2500 suburban w/7.4, 4l80e. I've had 33's on it for years (65k miles or so) w/3.73 gears runs little under 2000rpm @70 in OD). Towing (4-6K pounds very rarely, no probs with overdrive, unless I'm towing my 30' camper trailer), daily driver, family road trip stuff etc. I do not race my truck, I do not hot rod it around, I don't really gaf about fuel. With the 4" lift I've decided to go with 17" wheels with 35's. Now that I've decided to change wheels and tires I thought it a good idea to do 4.56 gears. I KNOW that would be ideal, but I'm curious, so I did the calculator thing. It seems I can cruise at 70 in third maintaining 2100 rpm with 35's keeping my 3.73's, 4th would be 1560rpm (really low rpm I think). I know all around 4.56 would be easier on the tranny, and more fun to drive. What's the difference? Tow in third gear and save a S***t ton of money on a re-gear or is it really worth it to re-gear axles all together? Best quote I got for 4x4 re-gear, no tune, is around 5k. That blew my mind. I can buy new trans for that much when I "supposedly" roast this one with my 3.73's. By the way, my 44 gal fuel tank wieghs over 300 pounds full, I have 4-8 people varying in weight and age in my truck often with all their crap and feel no difference while driving. How the hell does two inches of tire height and the additional weight of the tire etc. merit a re gear?