I originally posted this in the antique section for '70'2 F100 & up. It was suggested it would be more appropriate to post here. Hence ....


Here's the basic situation. I have a '63 F350 dump truck that had a 352/NP435 put in it at some time. I'm replacing the engine with an '76 FT 361. The issue I'm having is the pilot bearing. The bearing on the 361 is larger than the one on the 352. The O.D. is larger and the I.D. is larger.


So, what I need is a bearing that has the larger O.D. for the crank of the 361 and the smaller I.D. to fit the input shaft of the NP 435.


Essentially, 2 1/8" x 11/16" (0.67+)



A bushing would suffice.


I know I can have something machined up, but, I believe there is something proper already out there.

The 361 and the NP435 should be a common combination. But, I just can't find any info. The manual (1976) has one small paragraph that says if the pilot bearing is bad, replace it.

The searches on auto parts sites are always model specific not engine specific. Do I just have the supplier like NAPA figure it out .... or maybe a generic bearing company?

I pretty much find zero info on FT engines. I don't mind tracking it down if I just knew where to look or who to ask. I don't expect you guys to find it for me, just hoping someone can point me in the right direction.

Advice on how to proceed or your favorite pilot bearing supplier? ....



I will try searching this forum also, since I haven't been here before.

Thanks

 

I am pretty sure the medium truck NP435 has a larger input shaft than the pickup job. So an NP435/FT combo is/was not uncommon, but didn't have your issue due to the larger input.

I think I could have said that better.....

 

I'm still learning about all this. The problem seems to be that the 352/NP435 were not original to the F350 dump truck. The 352 was a '65 Galaxie (which, I think, would not have normally used the NP435.) The 361 was supposedly pulled from a '76 F350 and I don't know what tranny it had. Probably a normal HD tranny. Hence the larger pilot bearing I.D.


Maybe the NP input was switched to the smaller shaft to work with the 352 or something when the transplant was done. Or possibly the tranny was from a lighter duty truck that might use the smaller shaft. I just don't know how this transplant was put together.


The mish-mash makes it hard for me as an amateur to track what's going on and to communicate with parts guys to get things correct.


I can only find bits and pieces of info, like a jigsaw puzzle and all I have to do is fit all the pieces together. I do have some numbers from NumberDummy, from my opost in the other forum, on bearings that I have to investigate. I may be misunderstanding his info. I may have been given the answer, but, I'm just not seeing it clearly. I will go see what's what at a parts source.

 

Since you know the dimensions you need a parts man who should be able to do some research and find one (if it exists) that is the proper size. You will need to ask him when he's not busy.
If all else fails buy the one that fits the 2.125" hole in the crank and then see if a bushing exists that will reduce the diameter of the center hole or have a machinist make one.

 

In the OP's other thread in the 1973/79 forum, I listed the 352, 330 2V M/D, 330 2V H/D/361/391 pilot bushing part numbers and their specs.

In todays world, I doubt you'll find a parts guy in a Ford dealership that will bother. Parts guys today are computer certified techs, most do not want to mess with older vehicles.

Many say OBSOLETE the second the customer mentions the year (whether the parts are obsolete or not). Some claim they have no parts catalogs this old (another lie!).

The other problem is, most don't know diddly-squat about older trucks, so they come up with excuses to just "shine people on."

 

OP's other thread:

https://www.ford-trucks.com/forums/1...l#post17331046

As understand the OP's situation, he has an engine (FT361) that requires a pilot with an OD of 2 1/8". He has a trans that requires a pilot with a .67" ID.

IMO OP can:

--Find a willing machinist and a chunk of bronze, or

--Find a MD NP435, or

--Find a MD NP435 input shaft and swap it into his trans.

Serving suggestion.

Or maybe the 1"OD by .67"ID bushing would work. Like maybe this one:

http://www.advanceadapters.com/produ...-id-x-1090-od/

 

85 ... that is SOooooo close. The ID is actually something like .98 ... so this would still have to be turned down just a touch. But, ya ... that's what I need.


I suppose I could get one and have it turned down or just have a whole one made from scratch.


I pulled both bearings (larger is a bearing, smaller is a bushing.) Will take them with me to parts places. I could also have the old bushing turned down into one. Would have to see what the machine guys have to say.


So far all the numbers I have found or have been given are always one or the other of what I already have. But, none address the combination of dim.s I need.


Never have been able to find anything about a larger version of an input shaft for the NP435. They are always spec.d at 17 mm (.669).