4.0 to NP435 adaptability question....

[zachis4wheeling]

I read awhile back somewhere that there is a guy somewhere who is making an adaptor to mate the 4.0 v-6 to a NP435 4 speed....

Anyone know anything about this? I remember that in order to do it, you need to either bend the fawk outta the shifter, or slide the drivetrain back in the frame.

Anyone know anything?

Zach

 

[CopyKat]

All the info is on RRORC.

Matt8888 bought the first kit from Grem. Then Gouky got ahold of the kit and refined it yet further.

Look up Gouky's Explorer build it's in there.

 

[Evan]

I think advance adapters makes a kit for around $500.


Does anyone know of an NP435 to BW1350/54 adapter?

 

[Will]

I don't know if it's a good idea to feed a NP435 into a 13-50.

 

[Evan]

I don't know if it's a good idea to feed a NP435 into a 13-50.

Why is that? A doubler system is feeding just as much torque into a BW1350 or 1354 as an NP435 would.

And...my question hasn't been answered. If anyone has head of such a conversion being done I'd be interested to know.

 

[zachis4wheeling]

I don't know if it's a good idea to feed a NP435 into a 13-50.

Yea, if I go through with this, I am going to run either a 203/205 doubler or an atlas if I could find a cheaper used one. Either way, I'm going to need a new trans because the

"A4-never shoulda been used, piece of shit, been rebuilt 3 times and needs it again"

needs another rebuild and I'm refusing to use the A4LD again. I really want to run the 435 if possible as I have access to most of the swap parts I'd need for real cheap.

Anyone know the site of the guy who makes the adaptor parts I'd need?

 

[zachis4wheeling]

Why is that? A doubler system is feeding just as much torque into a BW1350 or 1354 as an NP435 would.

No it isn't. The 435s got a lot lower first gear than the M5ODR-1. Almost twice as low. The M5OD R-1s like 3.7 or something and an NP435 is like 6.6. That is a big difference.

 

[Evan]

No it isn't. The 435s got a lot lower first gear than the M5ODR-1. Almost twice as low. The M5OD R-1s like 3.7 or something and an NP435 is like 6.6. That is a big difference.

Yes, it is. A BW1350/1354 doubler behind an M50D will deliver more torque to the transfer case than an NP435. 3.72 M50D first gear times 2.48 in the doubler case = 9.23 going into the t-case.


I think this proves you'd be more than ok running a 1350 or 1354 behind an NP435.

 

[CopyKat]

And the fact that there is no adapter to mate the 1350/54 to the 435.

With the NV435 Just use a np205, it fits very well between the framerails, and there are more upgrade options for parts and doublers.

 

[Evan]

And the fact that there is no adapter to mate the 1350/54 to the 435.

With the NV435 Just use a np205, it fits very well between the framerails, and there are more upgrade options for parts and doublers.

I remember seeing somewhere on the Internet where a guy mated a 1350 or 1354 to a 435. He must have fabbed that adapter up himself.

Yes, a 205 is definitely a better choice behind a 435, but since I already have a 1350/1354 doubler I was wondering...

 

[CopyKat]

The output spline on the 435 isn't the same as the input on the 1350. Plan to have a spud adapter made or have a new rear output made with the correct spline.

 

[Evan]

The output spline on the 435 isn't the same as the input on the 1350. Plan to have a spud adapter made or have a new rear output made with the correct spline.

Yeah, it's probably not worth the trouble. It's just an idea I've always kinda kicked around. If I ever wanted a 435 it would just be better to sell my 4.0, M50D and doubler. Then go with a 302/NP435/205.

zachis4wheeling, you should be able to find a 4.0 to 435 adapter kit. I'm sorry, but I just can't remember the site I saw it on. It was around $500. It required a special starter and some modification to the tranny shifter.

You might want to think about a 302 swap if you want a 435. With the $500 you'd save not buying the adapter and the money you could get for the existing 4.0, that's enough to buy a 302 that's in good shape.

 

[zachis4wheeling]

Oh, I've definitley kicked around the 302 idea a number of times. Its just that I really like the v-6 I have and would like my truck to be a lil different, ya know?

And on the M5OD vs NP435 torque, I thought you were just comparin the trans.'s first gears. In that case, then the 435 is deeper, but yur absolutley correct though in that if you take the M5ODs 1st along with the 2.48 doubler gear, it is deeper than the 435s 1st.

Anyways, I might just go with the 302 if it looks like this is going to be too much trouble matin the 4.0 to the 302. I just always really liked the idea of bein able to run the lil v-6 still and hook it up to some of the strongest drivetrain parts available and have it be possible to run 42s or 44s witha v-6 cuz of the ballsdeep gearing it'd have. I really need to consider though how important it is to me tho to have the v-6 still. I would definitley run a 205 or 203/205 doubler if I did swap in the np435 behind the 4.0 and possibly down the road, even a crawler inchworm type underdrive box.

 

[Totalled]

And the fact that there is no adapter to mate the 1350/54 to the 435.

Wrong again. Advanced Adapters makes it. Silencing Thunder ran that setup for years. He never broke the 1350, even feeding it a 302. He broke the spud shaft that connects the trans to t-case. Same thing with Bob Doughty with the 5.0 HO BII. He broke the 25 spline output in the C4 but the 1350 was fine.

In fact, I don't think I've even seen a broke 1350/54 other than the rear tail shaft housing breaking from the rear drive shaft binding under droop. If anyone has broke the gear train or something else internally on a 1350/54, please post up. I'd be interested to see or hear about the failure.

I've been beating on my factory 1350 in my BII with a 302 for 2 years now, and it still is silent and shifts like butter.

 

[Evan]

Wrong again. Advanced Adapters makes it. Silencing Thunder ran that setup for years. He never broke the 1350, even feeding it a 302. He broke the spud shaft that connects the trans to t-case. Same thing with Bob Doughty with the 5.0 HO BII. He broke the 25 spline output in the C4 but the 1350 was fine.

In fact, I don't think I've even seen a broke 1350/54 other than the rear tail shaft housing breaking from the rear drive shaft binding under droop. If anyone has broke the gear train or something else internally on a 1350/54, please post up. I'd be interested to see or hear about the failure.

I've been beating on my factory 1350 in my BII with a 302 for 2 years now, and it still is silent and shifts like butter.

How much does the adapter cost?