Every stock transmission will suffer reliability and longevity problems if you hop up the engine attached to it without a corresponding upgrade to the transmission.
Douglas Campbell, P.E.
1986 Isuzu P'up, 177,673.8 miles.
- Hella headlights (highly recommended)
- DOT C-2 back end (also recommended)
- R-12 air conditioner converted to R-406a. Saved ozone and money
- 4.1:1 final drive converted to 3.4:1. Quieter, better mileage but it's a good thing I live in the flat Midwest.
- 9/22/2007, age 21: Still running well when reluctantly sent away for reincarnation, due to body & frame rust.
- Never did get around to converting it to french-fry oil, which is why I originally stumbled upon this site.
with all the upgrades on your truck, i would drive it as long as i was able i would never get rid of something i like because the wife doesnt like to drive it. men seem to buckle tenfold more than a woman ever would. yes i have a wife, but if she wants to go somewhere and all thats available i one of my bronco's or my truck drive it or sit at home.
03 f-350 cc 7.3 4x4 edge evolution, afe intake 4 in turbo back exhaust
97 f-350 cc 4x4 sc tuner, dieselsite electric fuel conv.
I have an 07 LBZ Duramax with the 6 speed Allison auto running a 90hp tow tune and haven't had any trouble after 75k miles. I also have an 02 LB7 Duramax with the 5 speed Allison auto running a 75hp tow tune and haven't had any trouble after 178k miles. The transmissions are stock in both trucks and get the external filter changed every 25k miles and get the pan drained and refilled every 50k. I tow a 15000-16000# enclosed goosneck trailer and both trucks have spent half their life towing.