| i run mine in four high 3rd gear with the tow haul on. but like most people i learned the hard way with lots of things. i lost the stock tranny many many tie rods and tons of cv shafts. im also running an 02 duramax with an aurora 5000 turbo, injectors, ppe hot tune +2 et, and a custom van aiken box. i also have a stage 5 sun coast tranny. i love pulling its such a rush |