Moparmat2000
I'm Awesome
As far as the trans longevity of my NV3500 goes, i dont beat on it. Even my clutch is still original equipment at 155K. Pulled trans out at about 120K for a stuck pilot bearing in the crank. Replaced that. While in there i did some PM (preventative maintenance) i changed the rear main seal, input shaft seal, output shaft seal, throw out bearing, and inspected the clutch. Flywheel and pressure plate still had nice factory swirl marks on them, and were flat on a straightedge. No heat checking at all either. Clutch disc measured only .001" thinner on my micrometer than a new GM dealer replacement i bought to replace while trans was out. I stuck the original back in. I also replaced U joints at that time, and refilled gearcase with Amsoil synthetic. Not sure if that made a difference or not.