1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

351m clutch parts for 460 swap

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Old 07-16-2014, 09:24 PM
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351m clutch parts for 460 swap

Hello! Sorry to bother you, but I'm putting a close ratio toploader from a big block torino in my 84 f150 2wd. My plans are mechanical clutch. I have bought the mcleod 1-3/8 input shaft clutch fork and throughout bearing. A internally balanced 390 flywheel and got a d9ta-7505 bell housing from a 351m truck. I'm using a 77 460 engine in it. But what are te proper part numbers for the clutch equalizer an pivots that I'm going to need for that bell housing???? I want to use all the 80s mechanical pedals so it looks factory. Will the 79 bellhousing work with 80s clutch setup??
 
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Old 07-16-2014, 10:42 PM
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I think you have bigger problems than the equalizer bar, etc. When I put a 460's transmission behind a 351M I learned that the flywheel on a 460 sits 1/2" further aft of the back of the block than does the flywheel on an M. So, is the transmission you are using from behind a 400 or 460? That will determine the input shaft length. And then using an M bell housing may cause a problem as I think they are shorter than a 460's bell housing due to the flywheel position.

You may already have that all figured out, but if not it is something to be thought through.
 
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Old 07-16-2014, 10:48 PM
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Torino's came with a 429, I think.

You need to make sure your pressure plate clears the bell as it tightens down to the block.
This is the problem with a 460 flywheel/clutch combo in a mechanical clutch bellhousing.
 
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Old 07-17-2014, 07:35 AM
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You would think I'd know that since it was my era, although I was a Mopar guy at the time. But, my limited understanding of the 385 series is that the difference in the two is stroke so that won't change the block-to-flywheel measurement. Right?

So that still leaves us with a 460 engine and a tranny that should have the proper input shaft length for that engine, but an M bell housing that may be of a different length than a 385's bell housing. I would want to verify the bell housing length before going further. Then, if that's ok we can explore the equalizer shaft and the associated parts.
 
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Old 07-17-2014, 07:43 AM
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The block and its crank flange 'stickout' are the same, just the stroke changed between U and Y cranks.
There were no gearboxes fitted behind a 460 in trucks until 1983 and hydraulic clutches.

I would think a clutch for the Torino will fit.
I do not know for sure the depth of the Torino bell, but it would have been mechanical.
 
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Old 07-17-2014, 08:17 AM
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At one time, there was a special spacer available to fit between a 460 block and 400 bellhousing, due to this extra crank flange "stickout". It allowed for converting a 460 truck to manual trans, or swapping a 460 in place of a 400. Obviously, the trans had to be set back an equal amount, which most driveshafts would allow.
I dunno who offered it, or if it still exists. I just remember seeing something about it way back when.......
A good fabricator could easily make their own, though. The starter would most likely need to bolt directly to the bellhousing, rather than to the spacer, for proper engagement.
 
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Old 07-17-2014, 10:35 AM
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well the plan is to use the 390 flywheel i got. Its from exeddy..its part number is fwfm113. its thinner than the 460 flywheel. the bellhousing i have is 6-1/4 deep. same as a 429 bellhousing. the late 80s 460 bellhousing are 6-3/4 i believe. the clutch im using is for a 1-3/8 shaft toploader. 11'' centerforce. so just needing to know about the zbar and equalizers
 
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Old 07-17-2014, 11:00 AM
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Gary has all the part numbers.
I cannot read my parts CD with my phone
 
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Old 07-17-2014, 01:05 PM
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If he has an internal balance 460 I think he will be fine with the M bellhousing and the 390 flywheel.
As for the cutch z bar and pivots, I believe the bellhousing side will work with both a BB and a SB bellhousing, provided it is the type that has a bracket that bolts on with 2 of the bellhousing bolts. The z bar is the same on all, as is the frame side pivot.
I have no part numbers for you unfortunately.
 
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Old 07-17-2014, 01:34 PM
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internal-external... the crank stickout didn't change.
The reason for using a 390 flywheel is less depth (don't know how this affects starter engagement) and neutral balance.

I would call Centerforce and ask if that clutch will clear in this application.
I am SURE they have seen this before.

The Hi-Po parts CD has all the diagrams and part numbers.
I just don't have anything with an optical drive.
 
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Old 07-17-2014, 01:44 PM
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I'll try to get the part numbers tonight. Was going to do it today, but a friend totaled his Bronco and I'm at the hospital. Apparently a broken foot.
 
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Old 07-17-2014, 03:36 PM
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If the small blick and big block are the same I found a local truck thats going for scrap with a 302 and machanicak clutch. Its a 81 with the swiss cheese frame and 4x4. So I can rob all the pedals and linkage and theoretically be good to go??
 
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Old 07-17-2014, 06:31 PM
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Looks like you are good to go:

 
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Old 07-17-2014, 08:41 PM
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So no surprises, that will all bolt to my 351m/400 bellhousing from a late 70s f150??
 
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Old 07-17-2014, 09:20 PM
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I can't tell you that. My catalog starts in '80. I am answering the question re an 81's clutch mechanism fitting any engine.
 


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