Trans Upgrade Advise - Ford Powerstroke Diesel Forum
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Old 06-17-2010, 02:05 PM
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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.
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Old 06-17-2010, 02:39 PM
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i think a shift kit and upgraded TQ would help, that what we have in our trucks and do reall good, maybe TQ is about shot??????
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Old 06-17-2010, 03:21 PM
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Miles???

6.0 TQ converter and a BTS VB, add a 31 row 6.0 trans cooler.
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Old 06-17-2010, 03:31 PM
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how much them tran coolers run?? im in need of a upgrade
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Old 06-17-2010, 03:40 PM
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Quote:
Originally Posted by caryt View Post
Miles???

6.0 TQ converter and a BTS VB, add a 31 row 6.0 trans cooler.
The truck has 140k+ on it.
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Old 06-17-2010, 03:41 PM
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Quote:
Originally Posted by YodersStrokin96 View Post
i think a shift kit and upgraded TQ would help, that what we have in our trucks and do reall good, maybe TQ is about shot??????
Which shift kit do you have?

Honestly its not so much the shifting, its just the TC is slipping when its unlocked with the load.
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Old 06-17-2010, 03:44 PM
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trans-go im thinkin i forget what he said when i bought it, but i just sayin that for less problems in the future and can do it all with takin the trans out once instead of twice
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Old 06-17-2010, 03:46 PM
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why a 6.0 torque converter behind a 7.3?
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Old 06-17-2010, 03:47 PM
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i think there built heavier, buddy has an RV TQ lol
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Old 06-17-2010, 03:49 PM
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but if yer gettin an aftermarket converter like a BTS, Suncoast or ATS what difference does it make?
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