TC lock up
 

TC lock up i was wondering with the 4r100 can we put a tv lock switch in it like cummins guys can? Jw lol oh or do we have to buy a controller?

You can build a TC lock up switch, I have never done it, but its fairly easy. You just have to ground a wire to lock the TC.

Welcome to guzzle's TC Lockup Mod Web Page

Guzzle tends to overbuild stuff, but thats a good write up there.

TC lock up
 

Sweet thanks! So this can make the truck pretty much lug right?

Yes. But be careful at low RPM's, the pump cant make enough pressures to hold the clutch packs and you can damage the tranny. Nothing wrong when pulling and such, but dont treat it like a clutch and lock it at 5mph and crap.

TC lock up
 

Ok ya it says not to do it in first on that write up

TC lock up
 

Has anyone actually built one like this?

I ran a SP Diesel unit for years, but once I got a built tranny I pulled it.

TC lock up
 

How much did the cost?

TC lock up
 

Ok so im building the tv lock up switch. Just need a few pointers on the diagram. There little things between the different points on the relay like 7&8, 6&2, also 1&5


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