Anonymous
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I have a 79 cj-5 with a 3 speed 2nd gear keeps popping out my guestion is does t soud like a shifting fork and how hard is it to replace or any information on what automatic should i put in it if i have to chevy or a ford also what is involved in swapping to an automatic thanks bill noble walled lake,MI
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Anonymous
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it would be cheaper to have the tranny checked out in a shop. might be able to fix it for a couple hundered bucks. or buy the tranny you want with a transfer case already on it, but then you dont know what your buying, and how much it will take to make it work. i swaped a t-90 3 speed in my 55 m38-a1, that has a 350 chevy, for a 4 speed siginaw. the tranny was free and in excllent shape. buy the time i bought the adapater and paid $200.00 for the tranny shop to do the transfer case to tranny swap, i installed the tranny, it ended up costing me $700.00. the rear driveshaft i was able to reuse, the front one i made. the tranny you have would be worth fixing, or try to find another one. friend of mine sold one with the transfer case for $100.00. he went to a chevy motor and automatic trans.
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Anonymous
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Most of the time it's the synchros when this happens, although it is possible that the shift fork could be worn. You can pretty much plan on a full rebuild either way if you decide to keep it. Once you get into it you'll want to make sure it's right before you close it up.
What's involved with an auto tranny swap depends on what you decide to do for the motor. It is possible to find the auto tranny from a later CJ mated to a Dana 300 and bolt this directly to your stock engine. If you can find the parts, this is usually easy and cheap. You'll need the tranny, the transfer case, the skid plate, the steering colum (unless you install a floor shifter) and all the linkages.
If you go to a Ford or Chevy motor you'll need to buy an adapter to mate your transfer case to the Ford or Chevy tranny. This normally runs around $500 and some of them require the tranny to be disassembled for install of the output shaft. You'll also need motor mounts, wiring and exhaust for your new motor. If you go with the Ford motor the hose fittings on the radiator will work and you can re-use yours if it's a 3 row radiator in good shape. If you go Chevy you need to move the radiator hose fittings, but once again, you can keep your radiator if it's a 3 row in good shape. A good radiator shope will have no trouble moving the inlet and outlet. Don't forget the shifter for the tranny, a tranny cooler and cooler lines, and the downshift cable assembley.
The C4 is a popular Ford auto tranny for swapping. The TH350 is a popular Chevy tranny for swapping, but the TH700R4 is gaining becuase it has a lower first gear and overdrive. The trade off is that the 700R4 is also longer and more expensive to buy and rebuild.
I've been assuming you have a CJ7 through all of this. If you have a CJ5 you'll probably want to go with a Chevy motor and a TH350 tranny becuase of length issues. A Chevy 4.3 V-6 with fuel injection mated to a TH350, and both slid several inches forward to make some room for the rear drive shaft would be great in a CJ5. You can fit a Chevy V-8 too, but you can't push it as far forward as you can with the 4.3.
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Jakeredman
Wheeler
Reged: 04/27/01
Posts: 187
Loc: Glenrock, WY,USA
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I would dump the t-150 and find a t-18. For the cost of the rebuild on the 150 you could have the t-18 and it will give you a granny first gear(6.32:1 vs. 2.99:1) and be bolt compatable to your dana 20 t-case. They are easy to find and inexpensive and because they were heavier duty there is seldom anything major wrong with them.
Good luck.
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Jake
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Anonymous
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i have the t-98 trans, basically the same as th t-18 guts are only things diff, bell housing and evrything is the same. also i live in mi so wouldn't have to ship. now i have a question for nutter...
i have the 65 cj5 putting in the 350sb, th350 trans, you said you can slide these foward? it would be great if i can. but i don't have the 3 row rad, have to get a diff one. stil be able to move it foward?
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Anonymous
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I slid a Chevy 350/NP435/D300 setup into my early ('71) CJ5. I used a Be Cool universal radiator from Summit Racing (about $275) and hacked up the grill a bit to allow me to mount the radiator as far forward as possible. It actually just barely touched the inside edges of the headlight buckets so I dimpled them in with a hammer. I used a Black Magic electric fan (also from Summit). The Jeep hasn't left the driveway yet but it's idled in 95 degree weather never getting hotter than about 185 degrees. This current setup allowed for a 15.5 inch rear driveshaft (CV).
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