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Unread 04-05-2010, 06:39 PM   #1
Area.3.Fiftyone
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1996 ZJ 
 
Join Date: Sep 2009
Location: Kingston, Pa. 18704, Pennsylvania
Posts: 3,469
NP435 with a flat belly skid?

I am re-doing the entire drive line in my YJ that I just acquired.

The PO swapped in a 5.0 HO motor, NP435, NP231 with TC drop kit and really didn't do such a good job IMO of optimizing the combo for belly clearance. There is currently no SYE, there are just shims between the axle and springs. (Plans are to swap out the D30 for an 8.8 and I'll point the yoke at the TC output).

The bottom of the NP435 hangs about 5" below the bottom of the frame rails and the skid plate/spacer is just way too low for any serious wheeling.

I put a 1" body lift on it last week and there is a ton of room to move the entire drive line up for additional belly clearance.

I know I'll need a CV rear drive shaft, but is there a limit on just how high you can raise everything before you are putting too much angle on even a CV drive shaft? Is there an "ideal" drive line angle?

Ideally, I'd like to get the bottom of the NP435 even with the bottom of the frame rails. To me, it looks like the motor mounts are welded in upside down, and can easily be raised at least 5" before I start to have bellhousing to firewall issues.

I know it's hard to visualize without pics, but I was just wondering if anyone else is running an NP435 with a flat belly skid.

Pics will follow tomorrow so you can all see what I'm working with.

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Unread 04-05-2010, 07:42 PM   #2
joshbaker92yj
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1992 YJ Wrangler 
 
Join Date: Jan 2010
Location: virginia beach, va
Posts: 182
Dont think you can because of the shape of the bottom of the tranny. that is why im going with the sm420
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