3rd gear issues on 727 after Tf2

There are two different PTKD servos. Be very careful where you test that trans when at WOT. I had a PTKD servo in the trans of my Demon. I sold the car and he took it to a trans guy??? for a fluid change and the man talked him into a shift kit. Three days later his 17 yr old son was killed in That car.

Eventually he bought a 72 340 Challenger from me. They put that valve body in that car. The son-in-law was entering the interstate and kicked it down to passing gear when the trans shifted drive the rear tires locked up . He spun the car around a couple of times but did not crash. Just like it did in the Demon as per the paralyzed passenger stated that was in the Demon when he crashed.

This is just a word of warning. Trans failure is not always what you are ready for. If you are not sure of your mods that you have done. Start over with a fresh valve body . Do one mod at a time or you'll be in the dark as you are right now.

There are times when it is best to leave trans work to the professionals. You must ask your self is it worth the risk for the money saved. I usually add the lighter governor and add a PTKD. Turn the line pressure screw out a quarter turn to give a little harder shift. Beyond that I leave it to the pro's.

That valve body can not be trusted now. Send it off to someone who knows . There are plenty of builders on this site. I am sure they will not give you advice without seeing what you have done in person. Nobody wants the liability of trying to correct you mods without hands on.

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Are you saying that the ptkd was somehow responsible for the rear tires locking up?
Or just that the trans guy didn't know what he was doing?