zf-5 speed [Archive] - FSB Forums

: zf-5 speed


jhjones84
04-07-2010, 01:16 PM
I've got a 400 in my truck. I'd like to put a manual in there. Would a zf fit. I've heard that a 460 bellhousing is the same as a 351 modified 400 so if i get one out of a 460 will it fit in my 79. Thanks for the help.

Brochoncho
04-07-2010, 01:39 PM
No, it won't just bolt up. The bolt pattern is the same, but the bellhousing depth is different. The 460's had a different style clutch that is bigger. I believe there is a spacer for it but it may only be for the 460. Also, the 460 and deisel bellhousings are different. Do some searching there may be someone out there that made it work with some custom parts.

Hopper
04-07-2010, 01:54 PM
No, it won't just bolt up. The bolt pattern is the same, but the bellhousing depth is different. The 460's had a different style clutch that is bigger. I believe there is a spacer for it but it may only be for the 460. Also, the 460 and deisel bellhousings are different. Do some searching there may be someone out there that made it work with some custom parts.

My 400 has a 12" clutch...I thought that was what a 460 used.

LarryP
04-07-2010, 02:07 PM
The in put shaft on the ZF is a little to sort. Me and a friend were going to do this. But after mocking everything up and taking all the measurements It wont work. Now if you find or make a flywheel that will set the pilot bearing back more towards the tranny i think it will work. Now i know of 1 or 2 ppl that are running it but there nuts cause only 3/16 of there input is set into the pilot bearing.

Brochoncho
04-07-2010, 02:23 PM
My 400 has a 12" clutch...I thought that was what a 460 used.

I agree, but I was talking about depth of the bellhousing on the trans not the diameter of the clutch.

I did a quick search on google and there are plenty of people out there that made it work. Most of the problems with ZF swaps are for the early 460's not the 351m/400. That is what was thinking when I posted earlier.

jhjones84
04-07-2010, 05:47 PM
Thanks for the info. If I had the input shaft out and taken to a machine shop could i have it lengthened and then it would work.

78bronco460
04-07-2010, 07:19 PM
Get a T18 or NP435.

Alvin in AZ
06-25-2010, 02:39 PM
The input shaft on the ZF is a little too sort. Me and a friend were going to
do this. But after mocking everything up and taking all the measurements
It wont work. Now if you find or make a flywheel that will set the pilot
bearing back more towards the tranny i think it will work. Now i know of
1 or 2 ppl that are running it but they're nuts 'cause only 3/16" of their
input shaft is set into the pilot bearing.
Something is really strange going on. :)

One time the shaft is too short the next time I read about the shaft is too
long and the 460's ZF needs a spacer to push it back from a 400.

Which is it? Both? ...because Ford made changes in the parts? Or what?

----------------------------------

A guy I know that runs a bearing shop figures my idea of using a 6003
sealed ball bearing as a pilot bearing is a good one. I know Ford used
the larger 6303 in the FT's. That's what I'm using in my 360FE.

And so far so good, on the 6003 in my 351w +ZF.

I can't find a wide 5003 double row ball bearing, that'd be about perfect
for our 17x35mm pilot bearing needs.

Alvin in AZ

7LBRONCO
06-25-2010, 10:14 PM
Last winter, I put a fresh rebuilt 460 back into a 79 F350 4x4. After removing the old motor, I discovered that the original 400 bellhousing had cracked, and been brazed tqice. That housing got pitched. A local slavage yard sold me another 400 bellhousing, even though I specified a 460 housing. When the first 460 was swapped into this truck, a 1/4" thick spacer was made to go between the bell, and the tranny face. I tried leaving it off, and the T18 input bottomed out in the pilot, before I had the trans drawn up tight to the housing. I HAD to use that spacer, unless I wanted to cut a 1/4" off the end of the tranny input shaft. That tells me that the 460 bellhousings ARE deeper, by around 1/4" .

Alvin in AZ
06-26-2010, 02:03 PM
I HAD to use that spacer, unless I wanted to cut a 1/4" off the end of the
tranny input shaft. That tells me that the 460 bellhousings ARE deeper, by
around 1/4" .
Cool post, thanks for that {snipped or not}. :)

I'm guessing one guy has the problem of being too close and the next guy
the opposite problem depending on which parts are 351m/400 and which
parts are 460.

Then there's diesel (ZFs and others?) bellhousings that can have certain
holes wallered out. Don't know nuthin' more 'bout those than that tho. :)

Alvin in AZ