np-435

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Sep 8, 2011 | 07:58 PM

f1001969mike

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Mountain Pass

Joined: Aug 2008

Posts: 225

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np-435

hey guys i recently posted that im putting an NP-435 in my 89 bronco which currently has the m5od in it the reason for this is because i want a stronger gear box in my truck, heard to many stories involving the words m5od and blew up, any i read on here that an easy way to install the np-435 is by borrowing the cross member off an automatic truck that has a different cross member wich bolts to the outside of the frame rail on the passenger side and mounts to the inside bottom lip of the frame rail with a gusset on the d-side is this true i need all the info i can get, a clutch job is on its way and thats when i wanna do this swap you guys have been an awesome help speacialy when i was having the problem with no spark gotta thank ya for that one

help me get this 140 lb beast in my truck! thanks in advance

Sep 8, 2011 | 10:59 PM

Edgethis

Lead Driver

Joined: May 2009

Posts: 6,804

Likes: 703

From: Tobyhanma, PA

Heres a few threads that may help you out.

https://www.ford-trucks.com/forums/7...o-a-np435.html

https://www.ford-trucks.com/forums/7...-question.html

Hopefully someone will chime in that has done this or is more knowledgable.

Sep 9, 2011 | 12:10 AM

greystreak92

Lead Driver

Joined: Sep 2002

Posts: 9,182

Likes: 12

From: Gateway to the West

Alas, I don't know enough about the NP-435 swap for newer trucks. I do know the ZF S5-42 is a DIRECT swap for the M5OD. (Uses the same clutch setup too). They are harder to come by though and it sounds like you already have the 435. Only 435 swap I've been a part of put it into a '74 behind a 300. Which still doesn't help me give you any good advice. One thing I can tell you is that the newer Bronco frames typically have two cross-member mounting locations. The aft mounting is typically for the monster E4OD automatic and the forward for the smaller (shorter) 5-speed (M5 or ZF).