75cj5 3 speed tranny

I have a 304 with a 3 speed trany. The motor has plenty of power but the jeep just roll or moves to fast in first gear. Can I change the gears in the trany are would it be beter to swap it out and if I swap it which would be the best practicle swap. I curently have 35's but am fixing to swap to 33's.
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Re: 75cj5 3 speed trany

are you looking for off road or on road performance?


You cannot change the gears in the trans, however you can regear the t-case or axles depending on what you are looking to do. A trans swap is also an option.

 

Re: 75cj5 3 speed trany

I drive on gravel roads and in the woods. If I regear the t-case it will still have the same gear ratio in 2 and 4 hi correct? I believe the 1st gear ratio is around 3 to 1. I think the 4 speed that came with the straight 6 is around 6 to 1. Will that trany work with the 304 v8 and my t-case?
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Re: 75cj5 3 speed trany

Yes, the transfer case gears only change the low range reduction. They have no effect on high range.

The T-18 4-speed with a 6.32:1 first gear was only used in CJs '77-79. They are scarce. The T-18 used from '71-76 has a 4.02:1 1st gear. Either of these transmissions would be an easy swap into your Jeep.

Swapping to the T-18 is a very popular topic here. Search for old posts and read the Novak site http://www.novak-adapt.com/knowledge/t18_t19.htm - lots of good info on the Novak site.

 

Re: 75cj5 3 speed trany

Thanks for the info it helps a lot. I think ill start saving for a T-18 and a twin stick for my T-case. I think the 6.32 to 1 is what I'm looking for.
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Re: 75cj5 3 speed trany

Your probably going tho need a shorter bell housing depending on which trans you find, the T15 had that long input shaft. Then you may also need to shorten/lengthen your drive lines.

 

I need new drive shafts anyway because the stock ones are shot.
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