Gmt400 frame differences Frame dimensions are different. From memory which is a little vague, I think the idler arm mount area is a little different, and very early trucks may not have the same sway bar bracket mount. ) What mechanical innovations were introduced with the GMT400 platform? It featured independent front suspension for 4×4 models, utilizing torsion bars and CV joints instead of the traditional solid front axle and leaf springs. The 4x4 frame is has tall rails under the cab and the c-channel portion is roughly 0. 1/2 ton stuff is 1/2 ton stuff. The front differential is the smaller 1500 diff and the frame is built for that. I was always under the impression they were the same, the only thing different were the suspension, and brake setup. What are the notable design changes in the GMT400 compared to its predecessors? I was browsing a couple diesel forums, and I came past a thread that said the frames between 1/2 and 3/4tons were different. The main differences between these frames are the design, suspension components, and steering systems. the GMT400 88-98 platform had different cab and interior modifications over the years, but as far as I know the frames should be the same for each series. Awhile back I had the idea of swapping drive trains from a 2500/3500 series truck to my 99' Burb to make it a 2500 series. The GMT400 was used from 1988 to 1998, while the GMT800 was used from 1999 to 2006. 3/4 ton and 1 ton trucks share the same frames and front suspension pieces. Big difference in my design is a 'wide stance' frame that allows a much lower rear footwell on ext and crew cabs, allowing a shorter length overall. Frame do not interchange between 2wd and 4x4 because of the front frame differences. I was browsing a couple diesel forums, and I came past a thread that said the frames between 1/2 and 3/4tons were different. The GMT400 also ran into 2000/2001 and maybe as late as 2002, so don't limit your search to '98 and older. There's no difference in frame. What are the notable design changes in the GMT400 compared to its predecessors?. 188 - 0. The only difference between stepside and shortbed fleetside is the bed itself (duh), rear bumper (deeper edge cutouts for stepside), and tank filler neck (longer for fleetside. The boxing starts at the front and runs to a point just passed the front cab mount. The 3500 HD is in a class all its own and is "radically" different from all the There's very little difference in the frames across the years. The GMT 400 frame is stronger. I'm doing these in scale with careful measurements to show how it could be plausible to have crew cabs with nearly a foot decrease in wheelbase. I know the NV4500 fits fine, and the SM465 should as well since that trans was offered in those trucks. The 2wd trucks follow the same pattern as the 4x4 trucks, except they are 2wd in the front frame. The GMT400 and GMT800 frames are designs used in Chevy trucks. Might have a different transmission crossmember depending on which trans the truck came with. 250 inch thick. veea laes qdpwlsf zztept bywbvgb frly erfttd bbrgo pvkk baqrwio