So the tranny is nice and quiet with clutch pedal pressed.
Throw-out bearing?

Hopefully it is the input shaft bering. that way I can justify to myself a M5R2, or ZF5, Which ever I can find.
Just don't want to do all that work for a T-bearing and put a the 4-sp back in.

 

Let me see if I understand: You have noise with the transmission in neutral and the clutch out? But with the clutch pressed in there is no noise?

If that's the case it isn't the throwout bearing since the only time it is being used is when the clutch pedal is down - assuming that your linkage is properly adjusted. I don't remember what year your truck is (you really need to put that in your sig or tell use every time), so I don't know if it is hydraulic or mechanical. The latter can be adjusted, but it is rare that any linkage will cause a throwout bearing to make noise when the pedal is up.

Edit: I should have said that I need to understand the situation/symptoms a bit more. Like is it in neutral or driving that you have noise? What does the noise sound like? Does it change with the gear selected?

 

Hi Gary
Truck is not on the road yet. Have not road tested it.
1984 302, 4-sp, Hyd clutch. With engine running, and in neutral I get a "bearing grinding/ rotating" type noise, resonates quite well up the shifter, push clutch in, noise slows, stops, and is quiet.
Foot off clutch, noise is back.
Tranny input shaft?

 

Yes, input shaft bearing. Your description of "noise slows, stops, and is quiet" fits with that bearing. You didn't say what 4-speed, but I don't think any of them were known as noisy. Time for a "new" one.

 

NP 435, I believe, as mentioned, not interested in pulling a 4-sp, re-building and install, Smarter to get .09 cents a lb. at the boneyard, and find a 5-sp!

 

You should be able to sell the 435. I have one and I've watched them go on CL for $50 to $75. Or, maybe I should say that's what they were asking and they disappeared from CL so must have sold. And, by the way, mine doesn't have input shaft noise, so that's not typical.

 

I'm gonna wander around a few boneyards soon. What would the "tranny code" be on the door sticker for a f-150 4x4 ZF with the exterior slave cylinder?
I understand this one is for small block (my 302) and should "bolt up" with no input shaft issues (being too short?)

 

There are several codes over the years. The ZF was intro'd in 88 according to what I see in the attached from the parts catalog. And it looks like the codes are C, W, & Z.

As for the engine, the small-block (meaning 300 six or 351W) version of the ZF5 has an integral slave cylinder so every one you find for the small block will be hydraulic. So look for either a 300 six or a 351W w/those tranny codes - although the fact the C code says "close ratio" I think means it was behind a diesel. Anyway, one for a small block will bolt up fine and the input shaft will fit like it should.

Edit: I should have said you may have an issue with the output as I don't know if the 2wd versions of the ZF used the same output style as the NP435. And, I believe you will have to move the rear crossmember/tranny support back about 1" on the frame.

 

Make sure your tranny has oil in it, and the correct oil in it(gear oil I believe). There should be a plug halfway up the side, the oil level should be at the bottom of that hole or close to it.

 

There is no small block external slave ZF.
External slaves only came with 460 & diesel gearboxes.

I also doubt you'll find a ZF in an F-150.
Typically Windsor pattern (small block)150's have the M5OD, the ZF 5-speed is found in 250-350 trucks.

You had also asked about 2wd vs 4wd.
It's my understanding you can split the case and exchange the mainshaft, re-shim and change over to a 4wd tailpiece.
The parts alone will be well north of $1,000

 

There is one 2wd application zf that can be used in a 4wd truck. That's one out of a f450. These trucks were 2wd with rear disc brakes. They had the parking brake on the back of the tranny. So Ford used a 4x4 tranny, bolted the parking brake assembly to the transfer case flange, and then hooked a driveshaft to it and ran it to the rear diff. This info probably won't do you any good, most f450's would probably be 460's and diesels.

 

You sure it's a NP435? Look on the Certification Label for the TRANS code, then look at the codes in post 8.

The most common 4 speed FoMoCo installed in 1984/89 F150's: RTS TS-OD Top Shift 4 speed overdrive.

 

Hi Number Dummy
We have not "typed" back and forth for a while!
Enclosed is a Door tag photo.
Is the Tranny an "A"??
It is right in the middle.

 

Here ya go, more readable:

 

(Chris knows Bill needs help. Can't even tell when things are dirty and needs the help of Chris. )