hey yall, long time no post. anyways, i just got this th350 rebuilt, behind a fresh 350, my question is when im driving in the neighborhood around 25, she shifts into 3rd and it bogs HARD! is there anyway to keep it in second at low speeds? i wouldnt of thought it would shift into 3rd at low speeds?

how about just putting the shifter in second. it should hold second if not you got issues.

do you have the detent cable attached to the carb?

i can keep it in second manually and it does fine, it has a th350, its just a kick down cable and I had it connected and it did not change. I then connected it and still the same exept it kicks down a gear like it supposed to when I am cruising.....i think my timing may be a tad off because it sounds kinda like a spark knock under a load. I still think my tranny is shifting too soon though.

you can adjust the kickdown (detent) cable. the further out the cable is pulled the longer it takes to shift into the next gear.

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not on a th350, shift points are controlled by the vacuum modulator. the cable is just to kick it out of third when passing/accelerating. if you have an adjustable modulator on the trans that can tuned to your liking pull the vacuum line and theres an allen head in there 9/32nds i believe. whats your timing set at?

thanks guys, i adjusted the modulator a little and i think i adjusted it too much, now second gear is QUICK! i mean it lasts like three seconds lol. I dont have a timing light, I have been playing iwht it, i use the fender trick, i disconnect the vaccum advance and i hold the gas at about 2k and move the dizzy til the fender feels smooth and the car sounds responsive. and now it starts up fine and shuts off fine. I kept backing timing off a TAD until the dieseling goes away, but now theres crappy power. I am losing it

whats your idle set at?