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Author Topic: No 435 input shaft.  (Read 4340 times)

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475fetoploader

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No 435 input shaft.
« on: September 27, 2020, 03:43:01 PM »
Has anyone installed an 1 3/8 input shaft in an Np435 4 speed. I have a 78 ford trans. and was wondering if I need more than the shaft and a bearing retainer. Will I have to enlarge the hole in the gearbox?
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1967  519 c.i.  TKX 5 speed
1975 4x4 461 f.e. 4speed on 38’s
Love many, Trust few. Always paddle your own canoe.

BattlestarGalactic

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Re: No 435 input shaft.
« Reply #1 on: September 28, 2020, 10:42:45 AM »
I'm curious, as I know a toploader changes nothing between big/small inputs.
Wonder if it takes the same bearing as a toploader?  I can't recall the number off my head.  307?  Been too many years since I bought one.
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Larry

My427stang

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Re: No 435 input shaft.
« Reply #2 on: September 28, 2020, 02:24:56 PM »
I have never done it, but cool, is it out of a bigger truck?  Be sure to check length

I can't imagine they change the bearing size, but I have never done it, and didn't know it was a thing LOL
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Ross
Bullock's Power Service, LLC
- 70 Fastback Mustang, 489 cid FE, Victor, SEFI, Erson SFT cam, TKO-600 5 speed, 4.11 9 inch.
- 71 F100 shortbed 4x4, 461 cid FE, headers, Victor Pro-flo EFI, Comp Custom HFT cam, 3.50 9 inch

475fetoploader

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Re: No 435 input shaft.
« Reply #3 on: September 28, 2020, 08:37:31 PM »
U haul trucks in the 70’s. I actually bought a N.O.S. Input shaft and retainer, from a place that fixed U-Haul trucks. It’s the only part of an NP435 I’ve ever broken.
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1967  519 c.i.  TKX 5 speed
1975 4x4 461 f.e. 4speed on 38’s
Love many, Trust few. Always paddle your own canoe.

TomP

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Re: No 435 input shaft.
« Reply #4 on: September 29, 2020, 04:41:19 PM »
Does it still use the FE size pilot tip? I have an FT 4 speed tranny that uses a huge clutch and it's big spline input has a much larger pilot tip, probably an inch (i could measure)
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475fetoploader

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Re: No 435 input shaft.
« Reply #5 on: September 29, 2020, 05:45:47 PM »
For some reason I thought that could be compensated for, with a pilot bushing. Now I will go measure the shaft I have, Incase it’s not the jewel I think it is lol.
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1967  519 c.i.  TKX 5 speed
1975 4x4 461 f.e. 4speed on 38’s
Love many, Trust few. Always paddle your own canoe.

BattlestarGalactic

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Re: No 435 input shaft.
« Reply #6 on: September 30, 2020, 06:58:38 AM »
You an always turn the snout down to fit the smaller pilot bearing.
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Larry

BigBlueIron

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Re: No 435 input shaft.
« Reply #7 on: September 30, 2020, 10:36:23 AM »
Larger 1 3/8" was common in the NP435 on the medium duty truck and AG applications, and does have a larger snout for the pilot bearing. Only requires a different pilot bearing to work with a regular FE crank. http://www.agpartsltd.com/shopping/productDetails.aspx?i=1053603 I used to have one laying around but I'm sure its long gone. Easy swap for the big input. Input shaft, bearing retainer and pilot bearing should cover it. 


Also a larger main shaft/output was available, standard on cab and chassis for a fixed 1350 yoke.  And some with a e-brake on the output.

I have been looking for the tall(er) shift tower used in some applications where the shifter cane was extremely long. When used in a pickup and shorter/regular shifter it effectively makes it a short throw. Or so Ive gathered, yet to try it out.

NP435 is a tough girl, wish the aftermarket supported it better.
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