Inherited an 84 cj with a built efi 350, th350 mated to a dana 300 twin stick. Not loving the 3 speed auto. Looking for advice or 5 speed manual conversions. Thoughts?
Gear / Accessories Tremec 5 speed?
- Thread starter ROCOragtop
- Start date
- Location
- Grand Junction, CO
Welcome to RME!
What's your primary use for the Jeep? If you spend much time offroad, an automatic trans is way easier to drive offroad than a manual. You could swap in a 700R4, get a deeper first gear ratio and gain overdrive, both would be a great match to the 350 and the Jeep.
If you wanted to swap to a 5 speed, it would take a decent bit of effort... adding a clutch pedal, hydraulic master and slave cylinder, etc.
Either way, you will probably have to move the Dana 300 back a little and shorten/lengthen driveshafts.
If it were me, I'd buy a quality rebuilt 700R4 and go that route.
What's your primary use for the Jeep? If you spend much time offroad, an automatic trans is way easier to drive offroad than a manual. You could swap in a 700R4, get a deeper first gear ratio and gain overdrive, both would be a great match to the 350 and the Jeep.
If you wanted to swap to a 5 speed, it would take a decent bit of effort... adding a clutch pedal, hydraulic master and slave cylinder, etc.
Either way, you will probably have to move the Dana 300 back a little and shorten/lengthen driveshafts.
If it were me, I'd buy a quality rebuilt 700R4 and go that route.
- Location
- Bountiful, land of rocks
I'm with @Greg on the 700 swap. Otherwise I'd find an OEM 5 speed/tcase combo and figure out how to match that to a 350 (everything has been mated to a 350, hasn't it?). I have a TBI 350/700/D300 in my rig if you're wanting to look at a full size 3d image. I'm in Bountiful. I'm personally not the biggest fan of the D300 despite running one.
- Location
- The Land Northward (Bountiful), Utah
I had a 350 with a 700r4 in a 89 YJ. It worked well enough with a stock wheelbase. Although the rear driveshaft was short with the stock 231 tcase. You should be in a little better shape in a CJ7 since that Dana 300 is a bit shorter.
Jinx
when in doubt, upgrade!
- Location
- So Jordan, Utah
I started with a 350/700r4/Dana 300, but the 300 has been replaced... The 3:06 first gear on the 700r4 vs. 2:52 on the TH350 is pretty nice on the rocks.
The TH350 isn't a bad unit, but the 1:1 3rd gear needs a little help on the road. Especially where everything modern has several overdrive ratios and everyone is used to rolling around at 70mph...
The TH350 isn't a bad unit, but the 1:1 3rd gear needs a little help on the road. Especially where everything modern has several overdrive ratios and everyone is used to rolling around at 70mph...
Pile of parts
Well-Known Member
- Location
- South Jordan
Just in case you're still considering the 5 speed swap....
https://classifieds.ksl.com/listing/61901483
https://classifieds.ksl.com/listing/61901483