Just trying to gather some info, I have a 4BTA and a '90's FJ80 Toyota Landcruiser. I'm planning on dropping the 4BTA into the LC this winter along with a NV4500. The Landcruiser has factory 4.10 gears and I'll be running 35's. The factory tow rating for the FJ/FZJ model Landcruiser has ranged from 3500#'s to 5000#'s as the engine size went up with the yearly model changes.
I'm planning on a decently built 4BT with the timing turned up, more fuel, a HY35 turbo, 3200 spring and worked-over injectors. I'm thinking I can get 400 ft/lbs out of the motor with that setup.
I'd like to be able to tow a tandem axle car hauler with another vehicle on it, perhaps one or 2 times a month. The car hauler with vehicle will weigh about 5500#'s and I'm curious how hard I'll be working the 4BT? Anyone else tow that much weight with a 4BT? How does it do with fuel mileage and that much weight?
(I'm well aware of factory tow ratings, don't want to get into that right here, right now. )