T/C Lock up mod Question

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May 31, 2007 | 05:11 PM

gunnertom

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Joined: May 2007

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From: Okeechobee,FL

T/C Lock up mod Question

I did the lockup mod a week a go an have been using it around town,The truck shifts had as hell.the question is were an when do most of you use your lock up.25 mph an up ,or towing, or some other time.Thanks

Tom

May 31, 2007 | 05:18 PM

cleatus12r

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From: Reed Point, MT

The reson your truck is now shifting hard is because there is now no slippage in the torque convertor during shifts. You're feeling the actual shift without the fluid dampener that was the torque convertor.

As for the lockup point, do it whenever you feel the most comfortable and when you're not lugging the engine. I'd definitely make sure you're in at least second gear before you engage the TC because the 1-2 shift uses parts in the transmission that require some delicate handling.

May 31, 2007 | 05:27 PM

powrstrkn'

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Joined: Dec 2005

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From: Middle of a field CT

I usually engage the TC lock around 25mph and try not to lug the rpm's down, (unless there is a need for smoke!) It seems to be easier on the TC and the rest of the trans.

That being said it keeps the tranny temp slightly ower, and it makes the truck more fun to drive, almost like I can pick a gear like a 6spd.

May 31, 2007 | 05:36 PM

AustinS

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Joined: Jul 2003

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From: Littleton, Colorado

The main reason I did the TC lockup mod is I tow a lot and it comes in real handy going up & down a grade. Saves the brakes some wear and tear. As cleatus12r said, be careful how you use it in the lower gears.

Austin