Guys i wanna know what are the main differences in TH350 with lockup and another without lockup (pre 1979)
Are there performance differences ?
Both have TV Cables ?
Which year is stronger?
Thanks

 

The actual trannies are esentially the same. The L/U one does have a higher volume pump but all shifts are the same. The good news is not too long ago TransGo came out with a Reprogramming Kit for the 350C that has all of the same features as the one for the 350. I talked to them years and years ago about it but they saw it as a fading unit but I guess they must have seen more interest in it.

 

The main differences are the pump, valve body, input shaft and converter. I have a 350c behind a 406 in a nova, it's converted to non lock up using a superior products kit and a pump, input and converter from a non lock up th350. The reason I converted it is because lock up turbo 350 high stall converters are more expensive than non lock up's and it's not a daily driver.
They all use the old style kick down cable and vacuum modulator.