Benefits of tq converter lockup early - Ford Powerstroke Diesel Forum
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Old 03-02-2013, 03:38 PM
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Benefits of tq converter lockup early

So we have a 7500 RV and towed it over the last few years without studs and the truck was a chunk of coal to say the least. Got 3 of Matt's tunes and am running the SRL in the winter, a whole new truck now. When we start towing in the summer, I will load the 8k tow tune that I also bought off him, (they said it's about 50+ hp over stock). I see on the Innovative site that their tunes advertise a little more power, (don't know if they need studs or not, it's the weekend), so might try one that they recommend. One of their options is locking up the converter on second and up. What does this do and is this safe?
Dene
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Old 03-02-2013, 03:57 PM
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Im no tranny guy but, when the converter locks, all power from the crankshaft is sent to the tranny, rather than a %. When a TQ is unlocked they are in essence slipping, slipping makes friction, friction makes heat. Trannies dont like heat. Locked up has no slip, great for towing, even a liitle slip while towing up a grade makes a whole lotta heat real quick.

Gb
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Old 03-02-2013, 04:04 PM
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Quote:
Originally Posted by gblauf View Post
Im no tranny guy but, when the converter locks, all power from the crankshaft is sent to the tranny, rather than a %. When a TQ is unlocked they are in essence slipping, slipping makes friction, friction makes heat. Trannies dont like heat. Locked up has no slip, great for towing, even a liitle slip while towing up a grade makes a whole lotta heat real quick.

Gb
That makes a lot of sense, you sound like a tranny guy even if you're not. Thanks for that.
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