olds 307 and 403

I accidentally mangled the kick down cable on my TH350. I changed the governor and weights that should have put the shifts over 5000 rpm. Without the cable hooked up, it felt like second gear starts and shifted soft and early. Took it out tonight with the new cable hooked. Tire spinning, firmer shifts and higher rpm shift points. I really didn't think it would affect a TH350 that much. Like a whole different car.

oldcutlass

Your governor changes made the difference not the cable. The cable just actuates passing gear.

Fun71

And the transmission won't hold "passing gear" at WOT without the cable connected. I think it is the detent valve that is actuated at WOT and forces the transmission to hold the lowest gear possible within the RPM range of the governor. With no detent valve action, the transmission doesn't know you're at WOT and won't downshift and/or hold the gear.

olds 307 and 403

That makes sense, I think the inner kick down lever/valve may be stuck. Sure makes the car more fun on take off, tire smoke around the corner. The shifts are much higher now. The governor was in since I put the trans back in, just been like this since I hooked up the cable. Still unhooked and I pushed the cable in, still acting the same.

coppercutlass

I don't run a kick down at all in my th350. I manually downshift and for the most part manually shift it. Even in drive it still functions well around the street but for 1/4 mile blast its all manually controlled by me.

Fun71

I don't understand exactly what you are saying here. Which end is unhooked? Which end did you push in? The trans end has a kink in the cable that goes through a hole in the lever that actuates the valve. Gotta have that hooked up properly for the valve to operate correctly.

olds 307 and 403

I hooked everything back up and now I am pretty sure the plunger in the trans is stuck. I unhooked at the carb and manually pushed the cable back. Still acting like it isn't shifting into 3rd.