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tc switch

J

jcompton

Guest
Has anybody tried to put a simple switch on the lock-up part of the torque conveter to prevent it from locking up when you don't want it locking up??
 

69MyWay

Well-known member
Joined
Jul 3, 2001
Messages
4,364
Location
Auburndale, Florida
Corvette
1969 Killer Shark
Yep. This trick has been around for a while. I think the Grand National guys made it popular as there were problems with the turbo cars getting them where they wanted them. I put one on a 1984 Grand National T-type car.

Don't know if the wiring is the same, but it is rather straight forward and simple. When you disengage it, you can punch the throttle and spin the engine up faster while at moderate cruising speeds. Your gas mileage will go down.
 
S

Scott81

Guest
Try a company called Painless Wiring, don't have the web site handy sorry. When I installed my 700r4 I used one of their kits for TC lockup, it's not the one you want but I do remember seeing a wiring kit to control that. Even Jeg's or Summit might have one.
 

Nut

Well-known member
Joined
Oct 15, 2000
Messages
890
Location
Bowie, MD
Corvette
Vette-less for now
JC,

The guy I bought my '81 from years ago put a switch in himself. $3.00 switch from Radio Shack and wired it into the switch wiring at the brake pedal. Nothing special needed. I may have the schematic alteration he used in my Shop Manual. I'll check. Btw.... it works perfectly. Run her up to 50-55, hit the switch....and plop. One locked in TCC. The switch also has a 12V light in it so you always know when it's on.

............ Nut
 
J

jcompton

Guest
Thanks.....

I also asked a friend that is a trans. rebuilder...and he said to be careful not to run it too hard and cause overheating and clutch failure..But he said that was just in extreme cases..like trucks pulling a load. I guess you interupt the ground wire going to the tc. Does anyone know which one that is??
 

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