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Discussion Starter #1
I have a 73 CJ-5 with a 304. I was thinking about stuffing an NP 435 with an Atlas under it to get rid of the 3 speed. So I called advance today to ask some questions one being the overall length after swap. They told me from block to output shaft would be 37-inches. What I have now is 27-inches. Where does everyone get the extra room for the tranny swaps in all the Jeeps on this board? Do you guys move the engine forward. Push axle back? Lengthen Frame? I can't move the axle back any more then about 3-inches without relocation of the gas tank. So what does everyone else have and how did you get it to fit?? Thanks in advance. ~steve
 

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Without knowing the exact numbers, I know my YJ is longer than a CJ5. My swaps were actually shorter than my stock setup, one of the reasons I did it. I know the Atlas is NOT the shortest tcase you can go with. Are you set on that> Are you set on the 435? I might look into a possibly shorter setup (concentrating also on the length of the adapters) Did AA have any suggestions for you? Also, that 3 inches on the rear end will help CONSIDERABLY on your drive line angles. How much lift do you have? What is your current drive shaft length/angle? Depending on your setup, it may not be as bad as you think. I would do a ton of research on ALL possible swap before deciding what is best for you. Sorry I couldnt be more help, I just dont know much about CJ5's <IMG SRC="smilies/frown.gif" border="0">
 

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Discussion Starter #3
the Jeep is currently sprung over on full size f-150 springs. Maybe lifted about 10 inches total. It has 36's and a ford 9-inch rear from an EB. Dana 44 front from a scout With the new lengths I see some potential problems. I may just leave the Dana 20 t-case and try to build it up. I was looking at the Novak page and the adapter is short and the new bellhousing I need amay conpensate. Is the Dana 20 worth putting lower gears in??
 

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Originally posted by 73cjsteve:
<STRONG>Is the Dana 20 worth putting lower gears in??</STRONG>
In my opinion HELL YES!!! D20's are plentiful, and CHEAP!

Your 9 inch may be a problem because of the low pinion <IMG SRC="smilies/frown.gif" border="0"> Thought about flippin it over? Or going Rev 60? With that much lift you are definitely going to run into angle problems. With my stock YJ crap I had a 16.5 inch shaft at 26 degrees <IMG SRC="smilies/eek.gif" border="0"> I blew up the CV in like 200 miles <IMG SRC="smilies/frown.gif" border="0"> You definitely have a challenge ahead of you. I would LOVE to see pics of that spring set up too <IMG SRC="smilies/wink.gif" border="0">
 

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You might want to consider a T18/d20 with low range kit. It will bolt to the 304, low frist gear, 3.15 low range and measures 23.62" without bellhousing. Carry a couple extra d20 outputs though, its the weak point of the d20s.

A t18/novak adapter/D300(short output,add 1.5" for long output) is 25.82" without bellhousing.

A Jeep t18/ Scout d300 is 22.62" WO/B
 

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hey keith,
By flipping over the 9", do you mean just the third member?? I'm not famiiar with the 9". If you flip the third member(if you can) do you use revers cut gears then??
 

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I had it easy.. the buick 231/sm420 combo was 2" shorter than the stock 225/T14 then the 3.5" adaptor put me at 1.5" longer... got rid of the rear parking brake drum and kept the D18 and went soa.. so now I have an 18" rear shaft with standard ujoints on both ends <IMG SRC="smilies/wink.gif" border="0">
 

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Originally posted by yjfish:
<STRONG>hey keith,
By flipping over the 9", do you mean just the third member?? I'm not famiiar with the 9". If you flip the third member(if you can) do you use revers cut gears then??</STRONG>

I meant building a rev cut 9. I am by no means an expert...I'd have Gearman do it <IMG SRC="smilies/rolleyes.gif" border="0"> <IMG SRC="smilies/biggrin.gif" border="0">
 

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Originally posted by PYRO:
<STRONG>You might want to consider a T18/d20 with low range kit. It will bolt to the 304, low frist gear, 3.15 low range and measures 23.62" without bellhousing. Carry a couple extra d20 outputs though, its the weak point of the d20s.

A t18/novak adapter/D300(short output,add 1.5" for long output) is 25.82" without bellhousing.

A Jeep t18/ Scout d300 is 22.62" WO/B</STRONG>
I agree, Keep It Simple Stupid. T-18 is an excellent trans. and the D20 is much stronger than a D300 and they both came as optional stock equiptment. There are several diferent 20's out there including a Bronco D20 which already has lower gears than the Jeep one. There are a couple of different yokes for the D20 as well. My stock one has a whole butt load of them and the newer, lower range one has like 8 or ten, I don't remember off hand, but it's a huge difference.
 

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Originally posted by 73cjsteve:
<STRONG>the Jeep is currently sprung over on full size f-150 springs. Maybe lifted about 10 inches total. It has 36's</STRONG>
How well do the F150 springs flex? They are a bit longer than stock right?
 

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Bronco D20 front output is flipped compared to a CJ.
 

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Originally posted by TornadoTJ:
<STRONG>Bronco D20 front output is flipped compared to a CJ.</STRONG>
And your point? <IMG SRC="smilies/wink.gif" border="0"> take the gears from a D18, replace the sliding gear with a sliding gear from a bronco, grind interior of jeep D20 case to fit and voila! bronco geared jeep D20 <IMG SRC="smilies/wink.gif" border="0">
 

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Discussion Starter #15
Thanks for all of the info. Looks like I need to find a T-18 and some lower gears for the dana 20.
The F-150 springs flex real well. They are from an 86 2 wheel drive if I remember right. They are much longer then the stock springs. I think that they are around 55-56 inches on the Jeep right now. HEre are some pics. I need to get the digi camera to get the pics of the spring mounts. http://www.pirate4x4.com/ubb/uploads/100.jpg http://www.pirate4x4.com/ubb/uploads/10001.jpg

<IMG width=448 height=336 SRC="http://www.pirate4x4.com/ubb/uploads/jeepflex3.jpg">
 

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CJ5s ARE real short, which is going to cause more problems.

the 435 IS a short tranny, IF you shorten the output shaft. Most of them require 7.5 inches of adapter between the tranny and transfer case if you leave the shaft stock. The AA 435 - 300 shaft can cut that down to 3 inches, or shorter.

I'm running a 435 with a 203 reducer and bronco dana 20. The adapter between my 435 and 203 is like 2 inches thick. Point is you can cut down this adapter length considerably if you want.

I swapped this stuff in because not only is the low range incredible now, but the whole thing is 2 inches SHORTER than my stock ax15 and np231 with SYE. Had to buy a longer rear drive shaft.

Chad
 

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I have a NP435 in mine, and I used to have the good ole three speed also. The 435 setup is quite a bit larger, but mine fit in quite nicely. I had to fix the mounting plate, and get new drive shafts, but other than that, it fit in nicely. Let me know, I can send you some pics......

I have the 258 in mine though, so I would second the motion on the T-18. Otherwise, you can certainly do the 435, it's just a harder swap. I went to Novak for my adapter. Those guys are really helpful.....
 

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I have a 72cj5 that is sprung over with stock springs and a 44 front and 9" rear with a mustang 5.0/ford t-18/dana 300. My rear drive shaft is going to be short but I don't forsee any problems. I would personaly go with the 300 because it already has lower gears and they are relitvly easy to find plus they are really easy to twin stick. Just my .02
 

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Here goes, I'm running a 401/t19/d300 combination in a 74 CJ5 my rear driveshaft angle isnt too awful bad the rear shaft ended up being 13 3/4". I used a AA to mate the T19 to the D300. For me the T19 was a better choice due to the first gear being synchro where the T18 isnt. But hey its only my opinion.
 

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Discussion Starter #20
. Let me know, I can send you some pics......

I have the 258 in mine though, so I would second the motion on the T-18. Otherwise, you can certainly do the 435, it's just a harder swap. I went to Novak for my adapter. Those guys are really helpful.....[/QB][/QUOTE]
I would like to see the pics of the 435 set-up. THe 304 is a little shorter the the 258 and with the short adapters maybe I will have no problems. Looks like I have some work cut out for myself.
Thanks for all of the input. steve
 
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