what alot of people dont realize is just how hard the desert is on a auto tranny. specially if you have a lock up converter in there. all that loading and unloading of the tires to the ground plays major havoc on parts. its hard enough on a gasser thats pushing 800hp and torque that is less than that. increase that torque by two times the hp and your really gunna tear things up. the 4l80s are not that tough and just wont last behind a dmax, let alone in the desert even with all the goodies in it. it may last a race or two but its gunna need a refresh after then. i wouldnt even run a dodge tranny, i would bet the billet inputs on them would snap at 600hp out there too. shock load is the big killer. an all built billet allison might do it, but i couldnt say if clutches or torque converters would hold. ive been dying to build a dmax desert truck but the trans is whats been holding me back. i know its either gunna cost me a refresh every other race or shits gunna break. A heavy trans is not a worry for these guys. the car already weights in close to or over 4k im sure. i know gieser trucks are right around there. the extra weight wouldnt matter.
I could be wrong and he may get it to work. that would be sweet! but im just going off what i know and 4l80s are not all that great. every one of those front runner Trophy trucks and truggys has a th400 in it and there is a reason. problem is no TC lock up and no overdrive makes it hard for a diesel to get the power out
