Maybe We Should Think About This For A While
BS: I'm about to take the TH350 out of my 1965 Chevelle and install a TH350 with lock- up torque converter. I'm running a 350cid with 3.55 rear end and I'm looking for fewer rpm's at freeway speeds. The lock-up would be operated by an on-off switch mounted in cab. It is to be used over 40 mph only and it must be turned off if it is going out of 3rd gear (like kick down). Is this a practical setup?WS: Do you happen to know how the transmission was originally kicked into the "locked-up" stage? It would seem to me that you would have to monitor both engine rpm and car speed. What would happen if while on the freeway, you had to hit the brakes and didn't have time to punch the switch first? Maybe you should check into the kit that B&M sells or the 700R4 lock-up and find out when it kicks on and off. Is the only difference in the torque converter? It can't be due to the wiring having to go to the transmission body (hard to wire that spinning converter). Once you put this transmission in, what would it take to revert to the stock-type configuration converter if you have problems? Just how many rpm are you turning at 65 mph? I have 4.10:1 and run at just under 4000. I don't know how much money this project would take, but maybe a 4-speed would be money better spent.
Archivist: Tom Wilson
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