NP435 Tranny install.. Pull engine?

Get answers to Bronco-related technical issues.
Post Reply
Bill K
Official CCB Member
Official CCB Member
Posts: 30
Joined: Sat Sep 08, 2012 6:06 pm

NP435 Tranny install.. Pull engine?

Post by Bill K »

Hello, getting ready to install an NP435 tranny(once I get an adapter). Is it necessary to pull the engine or can I pull everything off from behind? Trying to figure out what I need to get together before I tackle the job.......... Got all gaskets replaced on a nice tranny so close........... Any good templates out there on where to cut the floor cowl to fit the tranny?

Once done, any market out there for a stock tranny and Hurst floor shifter?

Thanks in advance
Bill
B.O.B.
Official CCB Member
Official CCB Member
Posts: 777
Joined: Thu Nov 11, 2010 9:31 am

Re: NP435 Tranny install.. Pull engine?

Post by B.O.B. »

You don't need to pull the engine. Just some extra hands to get the tranny in. I did mine by myself but do not suggest to do it. Definitely do it in pieces also. Bellhousing, tranny, t-case, etc.
71' bronco, np435 w/trailbanger, 302 efi, 35" KM3 on 17x9 Fuel Anza, warn xd9000i, cage arms, 5" lift
User avatar
Kinder
Official CCB Member
Official CCB Member
Posts: 4372
Joined: Wed Sep 29, 2010 9:03 pm

Re: NP435 Tranny install.. Pull engine?

Post by Kinder »

Not much of a market 4 your old one, good for a core charge at the yard. I'd get a couple of guys that run 435s to give you some measurements on where the shifter comes through the floor. I believe it's in front the the floor brace. Do you know how to pop the shifter out?
Best to Date MPG: 26.6
User avatar
Gunnibronco
Official CCB Member
Official CCB Member
Posts: 4077
Joined: Mon Jan 03, 2011 5:07 pm

Re: NP435 Tranny install.. Pull engine?

Post by Gunnibronco »

Here are a couple pics of when I installed my NP435, 10+ years ago. My body mounts are smashed from 40 yrs of abuse (30 years back then), and the body probably sits lower than it did when new. So your results may vary. I had to cut out my body crossmember. I did not know how to take out my shifter when I did my swap, that would have made it 100x easier. I kind of feel dumb now, its really easy to take it out, it just wasn't obvious to me.

And yes, I did heat and bend my shifter while it was in the truck, that is the smoke mark you see on the dash board. Do NOT try that at home. Youthful indiscretion.
You do not have the required permissions to view the files attached to this post.
"America is at that awkward stage. It's too late to work within the system, but too early to shoot the bastards." ΓÇô Claire Wolfe
74-AWB 98", ZF5, Atlas4, HP609s, ARBs, 37's, 3.5" lift-5.5" front coil springs, Tahoe rear springs, EFI 302, h-boost, 4x4x2 hyrdo assist, custom dash & gauges
72 U15- Explorer Sport-Candyapple Red (1 of 141)
User avatar
phyler
CCB Admin
Posts: 1231
Joined: Sat Oct 02, 2010 8:41 pm

Re: NP435 Tranny install.. Pull engine?

Post by phyler »

I'm out in Erie so not too far. You can come and look at mine. I did mine and then helped three of my buddies with theirs. It was years ago but I think I can remember most of the tricks.

Adam

Sent from my HTC One using Tapatalk 2
1975 Ranger Edition that I've had longer than I've been without it.

OG
User avatar
Justin
Official CCB Member
Official CCB Member
Posts: 6199
Joined: Sat Oct 09, 2010 11:04 pm

Re: NP435 Tranny install.. Pull engine?

Post by Justin »

Both my Broncos have had NP435s and the hole cut looked pretty much like Gunni's. Let me know when you install yours, I'd like to come help. I'll want to drop mine at some point down the road and haven't pulled a trans before. I've also got a trans jack you can borrow. No need to pull the engine, although if you're going to at some point you might as well do it all at once.
Bill K
Official CCB Member
Official CCB Member
Posts: 30
Joined: Sat Sep 08, 2012 6:06 pm

Re: NP435 Tranny install.. Pull engine?

Post by Bill K »

Hey Gunni, nice burn marks on the dash. I saw that and knew exactly what happened :') I did figure out how to get the shifter out. Tried removing those two rivet type things for about an hour with visegrips....those things are super tough..... didn't work so after some messing around, and a lot of frustration I finally figured it out! Gotta laugh about it now. Thanks for the offers. Will let you know when(hopefully this fall sometime) the swap happens.
Boy, you really have to bend that sucker! Does it really get soft enough with a basic blow torch to bend without putting it in a vise? Seems like pretty hard steel to me.

Bill
User avatar
Justin
Official CCB Member
Official CCB Member
Posts: 6199
Joined: Sat Oct 09, 2010 11:04 pm

Re: NP435 Tranny install.. Pull engine?

Post by Justin »

I suspect you'll have a tough time with a propane torch. If you want to bring it by, I've got oxy-acetylene, and even then we'd be breaking out the bench vise. We can use my shifter as a template.
User avatar
Gunnibronco
Official CCB Member
Official CCB Member
Posts: 4077
Joined: Mon Jan 03, 2011 5:07 pm

Re: NP435 Tranny install.. Pull engine?

Post by Gunnibronco »

I remember trying to pull the roll pins/studs out of the case too. Obviously, that is not the right way. Actually the dash wasn't burnt, just some smoke residue, wiped right off. I don't think you'll do anything with propane, you'll need oxy to do the job. I did it still in the trans, just get it red hot, and it will bend without too much trouble. Good luck.
"America is at that awkward stage. It's too late to work within the system, but too early to shoot the bastards." ΓÇô Claire Wolfe
74-AWB 98", ZF5, Atlas4, HP609s, ARBs, 37's, 3.5" lift-5.5" front coil springs, Tahoe rear springs, EFI 302, h-boost, 4x4x2 hyrdo assist, custom dash & gauges
72 U15- Explorer Sport-Candyapple Red (1 of 141)
Bill K
Official CCB Member
Official CCB Member
Posts: 30
Joined: Sat Sep 08, 2012 6:06 pm

Re: NP435 Tranny install.. Pull engine?

Post by Bill K »

On hold for a bit, still trying to locate a used adapter. Also planning on putting in a new clutch/TO bearing while I am in there. The existing one is old but not many miles but probably a good idea since it is all apart. I guess I could plan on definitely doing the TO bearing and have a clutch in case the existing clutch looks good...... actually will just do it, $200 now is better than pulling the motor in a year.... What clutches do you guys use?

Bill
User avatar
Colorado75bronc
Official CCB Member
Official CCB Member
Posts: 996
Joined: Fri Oct 22, 2010 6:13 pm

Re: NP435 Tranny install.. Pull engine?

Post by Colorado75bronc »

The Luk clutches are great for the price, I believe napa sells them, make sure you give yourself time to send the flywheel out to be resurfaced as well
75' bronco, 302, carb'd for now, i'm gathering parts for efi, 3g alternator, saginaw pump, 4x4x2 box, fw hp44, fw 9", N.P. 435 w/ gearbanger shifter, twin stick'd dana 20, 2" BL, 5.5" wildhorses lift, and 35" km2's
User avatar
Justin
Official CCB Member
Official CCB Member
Posts: 6199
Joined: Sat Oct 09, 2010 11:04 pm

Re: NP435 Tranny install.. Pull engine?

Post by Justin »

x2 on Luk. Sachs is good as well.
Bill K
Official CCB Member
Official CCB Member
Posts: 30
Joined: Sat Sep 08, 2012 6:06 pm

Re: NP435 Tranny install.. Pull engine?

Post by Bill K »

I assume if I get the clutch at Napa, they can also do the flywheel
User avatar
Justin
Official CCB Member
Official CCB Member
Posts: 6199
Joined: Sat Oct 09, 2010 11:04 pm

Re: NP435 Tranny install.. Pull engine?

Post by Justin »

It depends, some can, some can't.
User avatar
phyler
CCB Admin
Posts: 1231
Joined: Sat Oct 02, 2010 8:41 pm

Re: NP435 Tranny install.. Pull engine?

Post by phyler »

The Napa in Boulder used to but that was before they moved over to Arapahoe. They may still but you would need to call first.

Sent from my mobile
1975 Ranger Edition that I've had longer than I've been without it.

OG
User avatar
Justin
Official CCB Member
Official CCB Member
Posts: 6199
Joined: Sat Oct 09, 2010 11:04 pm

Re: NP435 Tranny install.. Pull engine?

Post by Justin »

Check the for sale area. Someone just posted a clutch.
Bill K
Official CCB Member
Official CCB Member
Posts: 30
Joined: Sat Sep 08, 2012 6:06 pm

Re: NP435 Tranny install.. Pull engine?

Post by Bill K »

Just saw that and replied. Don't know that much about clutches.... will that one work on my stock 302? and is that a a decent price(haven't priced them out in over 25 years)?
Post Reply