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Anyone know what adaptors I need attatch a NP435 to my NP231 in my YJ? I tried to get some info from AA, but cant get through on the phone or by e-mail <IMG SRC="smilies/pissed.gif" border="0"> I'm running a 4.2 liter for now.
 

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I don't know if AA sels a kit but Novak web site says that they will have a kit ready by the end of this summer. Contact these guys they specialize in jeep conversions.
Try this link for some info.
http://www.novak-adapt.com/catalog/231_kits.htm

Wild horses 4x4 (early bronco company) has a adapter for the np-435 to dana 20 it might be a cheaper route than teh np-231 adapter, plus you can go with twin sticks and have a fixed rear output shaft (assuming that you don't have a SYE installed allready)
heres the link.
http://www.wildhorses4x4.com/34.asp
EB dana 20's have ratios ranging from 2.43:1(T-Shift 66-72) - 2.46:1 (J-Shift 73-77)

Hope this helps
<IMG SRC="smilies/wink.gif" border="0">
 

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Yeah go D20.

There is a twin stick kit for it, they can be found for pretty cheap.

The np435-231 adapter is around $800 from AA <IMG SRC="smilies/eek.gif" border="0">

The NP435-D20 adapter is around $300 and there are probably 5 companies making them.

You can also do a NP435 - NP203 - D30. The 203 case acts as a doubler. In internet searches, I have found more info on that swap into YJs than simply the NP435-D20.

Tom's Bronco Parts is another place to call about adapters.

I plan to do the latter in my YJ when the funds become available.

Here are some links

Chad Lloyd: http://www.chadlloyd.rockcrawler.com/Tech/TrannyProject.html

NP435 in a Bronco: http://www.pirate4x4.com/tech/EB435/index.html

A search on www.google.com will come up with some good links. A guy in Canada has a good site on a Ford 302 - 435 - 203 - 20 swap.

[ 09-27-2001: Message edited by: BostonWrangler ]
 

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Thanks Charley. I have all these ratios floating around in my head and at 1:00 in the morning something is bound to get mixed up. <IMG SRC="smilies/smile.gif" border="0">
 

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I dont know what the 231 bolt pattern is but if it is round bolt pattern you might try an adapter from an 80 to 86 Dodge with the435 and a 208.
 

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231 is a round 6 bolt pattern right? same as a dana 300. what pattern is the dodge 208? i need to get from my dodge 435 to my dana300. <IMG SRC="smilies/idea.gif" border="0">
 

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It depends on what tranny you are replacing. I just did this swap myself. There are a few things AA could not help with. If you want more info on this swap, drop me an e mail and I'll e mail the details about the swap. [email protected]
 

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thumper and crew,
We don't want to have our pigs confused. With the NV231/242/NP208 you can plan on the stock driver's side pig front axle, but with the JeepD20/D300 you will have to have the passenger side pig front axle, unless you are using the more rare Ford D20 which hangs to the driver's side. Ford had a stock adapter that mated the NP435 to the Ford Dana 20.
If you use the Ford NP435 it bolts to the 258 engine with one more bolt hole drilled in the B.H. and 6.5" stickout. With Ford's adapter and a Ford D20, everything would bolt up with NO adapters. With either the 2.46 Jeep D18 gears to replace Ford's 2:1 low range gears, or Tera's 3.15:1 aftermarket gears, or some other MFGR's with gearing down into the 4:1 range, the sky's the limit.
I like the NP435. The lowest of the Ford 4 speed low gears.
I just bought another one yesterday for $50. Looks to be in great shape. I also picked up a Clark 280VO, H.D. truck 5 speed yesterday for $200.
(280VO (H) 5.98/3.50/1.86/1.00/0.80/5.04R Clark '68-85 up)
It's a rare trannie with the illusive Overdrive and came from a 4WD Ford F600. It is big. the NP435 is about 132 lbs. This Clark is, I'm guessing, about 230 lbs. I'm going to try to shoehorn it into my CJ8. Plenty of rear driveshaft available (32") and I could use that 20% O.D. with my 4.88's. [which means I will replace my NP435]
I now have lined up in my garage:
SM420, SM465, T98 (with D18/D20 adapter), NP435, Clark 280VO.
regards, as always, jefe
 

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Ford had a stock adapter that mated the NP435 to the Ford Dana 20.
I don't think so, Jefe. AFAIK, whenever Ford used the NP435 in Broncos, they mated it to a Dana 21 one-speed t-case, not a Dana 20. I believe the bolt patterns and/or spline counts are different between the 20 and 21 cases, but at any rate the D21 adaptor is quite long (8" or so).

There is strong aftermarket support for NP435/D20 adaptors, though, since the NP435 is such a great upgrade for the Bronco guys.

Chris
 
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