F^3 Concrete
New member
So my dad's 2003 7.3 has 509,000 miles on it and the original 4r100. Over the weekend, we diagnosed that we have a cracked flexplate causing a God awful racket at idle that goes away with a few rpm. For now we are going to just drop the tranny and replace the flex plate, since he is now driving my 99 7.3 manual and I am driving our 79 International Scout while we wait on parts. Needless to say I want my truck back. However, we are looking at the possibility of needing to rebuild the 4r100 here soon even though she doesn't slip at all and shifts through all of the gears great. I want to get a current opinion on the best build kit and TC options for a truck that will never see more than 350HP but tows around 16k lbs regularly and around 7k daily. We are looking to keep this fairly cost effective - buying good quality parts but not overbuilding it to the level of a sled truck. I guess I better include that it is 4x4 with its only current modifications including a 6637 air filter for dealing with jobsite dust. Here soon we will be looking at a EBPV ****** pedestal and High Flow outlet with a billet wheel from Riffraff. At that point we hope to get a DP tuner from Jody as well as a Mishimoto tranny cooler and 4 in exhaust. We are going to keep it at the 350 to 365 range HP wise for durability since this is the main workhorse of our concrete pump. He doesn't flog this truck around as can be evidenced by the life of the tranny but would like a bit more power for towing up 421 and I77 around here.
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