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Trans Upgrade Advise
I have an 03 PSD with the 7.3 and the automatic. I have done the standard upgrades to the truck, DP Tuner chip, Intake/exhaust, turbo wheel, & gauges etc. Now I have plenty of power, but I have some issues/concerns with the trans.
What happens, when I am starting off when I am towing aprox 12k lbs, the truck's torque converter will just keep slipping while i try an accellerate. the truck moves, but it doesn't really matter if i get into it, or ease onto it, it will accellerate at aprox the same rate. While the torque converter is unlocked, if i get into it, it will allow it to rev up to 3k rpms and only create more heat, but i will usually keep my foot out of it and just chug along. But, once the TC locks up, or i throw my lockup switch, the TC will no longer slip and it will go. My trans temps stay fairly low, about 90-100 over ambient temp, except when i am in some stop-50 type driving, then they will go upto about 110 over.
It seems that if i was to have a TC that could hold more power while its unlocked and keep it around the 2-2500 mark even while getting into it?
My question is, should I upgrade my TC, or will that only give it firmer holding power while the TC is locked. Is there any other upgrades that i should look at doing, or is this just the way its going to be. Is there any type of controller or anything that will say unlock the TC in first, until the MPH hits the point when it could lock and be around 2k rpms, then shift into 2nd and unlock the tc etc, instead of just being unlocked until it hits a preset mph. Is there anything else that you suggest I look into doing? Of course, in the perfect world, throwing in a fully built trans would be ideal, but I am not looking to do competition or anything along those lines, I just want something that will shift alot better.