auto trans downshift

Can anyone tell me or show a pic of what they used for auto transmission downshift? Is it a cable, linkage, or vacuum modulator? I have a CJ5 with the auto swaped in (TH400). but there doesnt seem to be anything to downshift it. Sometimes I go up hills and its still in second gear and wont downshift unless I manually shift.

Thanks,
Josh

 

Should be a cable. I don't have a picture on me, but I can scan one tonight if you need it.

 

I must be losing it, thought someone just asked about this, must have been another board .
Anyway, non of the above. 400's use a solenoid activated switch for down shifting. On the left side of the tranny you'll see a single spade connector just above the oil pan, this is for the solenoid. All you need is simple plunger style switch, some way to mount it to the carb or gas pedal and 12v. It will need to be adjustable so you can alter the downshift point. 72/73 Commandos used a switch activated by the gas pedal. Not really sure what CJ's with Q-Trac used but you might be able to get the set up off one of those. 67/71 Jeepsters *usually* had the switch mounted on the carb but they used Rochester so depending what carb you're running that may not be an option. Although if you like fabricating brackets you might be able to go that route. I don't know if I have a Commando set up sitting on the shelf but if I find one between today and tomorrow I'll post up a picture of it.

 

Huh learn something new everyday. I always thought the T-400's had the kickdown cable from the carb. Or does the kickdown cable from the carb run to the solenoid.

 

400's never used a cable. 350's did though.
I can't believe that pedal assembly was actually where I thought I might have probably left it. This is off a 73 Commando.

 

Ok gotcha, I was thinking the 400 was the same as the 350. Like I said learn something new everyday. Thanks PackRat!

Sorry to steal your thread Josh, I can still scan in anything from the factory service manual if need be.

 

Im running a rochester 2bbl ( 2G or 2GC?) so I may be able to do the carb switch thing -a pic would be great. Also if you could possibly pinpoint which years/ models they came on for ordering purposes, that would be great too. The PO must have skipped this part!
Thanks,
Josh

 

Wow. The FLAPS is not going to be able to help me on this one . Any suggest. on where to find one? Also, is it just a switch on carb going to the terminal on the trans? Or is it connected to something else on the way? A solenoid? Or is the unit in the side of the trans the solenoid?

Josh

 

67 to 71 Jeepsters. Might be able to find one on an old 60's Buick if you happen to run across one at the junkyard. Some of the old Gladiator/Wagoneers with the 350 Buick and 400 combo would have it. I might have a spare one kicking around off a Jeepster but I don't think so. If I get a chance before Sunday I'll see if I can find one. After that I'll be in NC for three weeks.
All you need is a 12 volt feed to the switch and a wire from the switch down to the terminal at the trans. That's it. The connection on the side of the tranny is just that. The solenoid is mounted on the valve body. You could even mount a spring loaded switch in the cab and activate it manually if all else fails.

 

I'll se if I can come up with a picture of one at my buddies place. 20 some odd Jeepsters he should have one with it still attached R) .

 

What do you guys think about this? - Skip the downshift switch thing. Put in an auto shifter that I can just shift manually like a manual/automatic.
The only reason I dont do that now is because I have a B+M racheting shifter that is cable operated and is pretty much junk. The reason I say its junk is because I shifted into rev once when I was going forward. And if I try to shift gears now it isnt easy to shift due to the old rachet mechanism.
Can anyone recommend a good auto shifter that will absolutely keep me out of rev when going forward that is also easy to shift with no rachet crap. For a reasonable price?

Josh