11" flywheel

[62bigwindow]

What truck or car can I possibly find a flywheel for an 11" clutch for a y block

[64 f100]

I think it is the same for either 223 or yblock truck. If so, I have several. Will need to be turned as these are used. A few years ago, Dennis Carpenter had several new ones for sale cheap. Long gone now though to the best of my knowledge.

Rich

[62bigwindow]

Thanks. What would you want for one? Maybe someone will chime in and let us know if the 223 and 292 are the same.

[charliemccraney]

The flywheels are not the same. Your best bet is to buy a new flywheel with the 11" pattern.

[62bigwindow]

Thanks. What year of truck or car do I reference at an parts store to get one?

[64 f100]

Are you going to be at Pate? Cost of surfacing a flywheel and buying one used will put you not far from what a new one would cost. Price would be 30$, but hispping is killer now days.

Rich

[62bigwindow]

Won't be able to make it to Pate. I'm going to check on a new one and will get back to you. I asume that any slick with a y block will have the 11".

[charliemccraney]

I don't think all Y block clutches are the same size.

I did a brief search and it looks like the only game in town for new is Mummert. I highly recommend that because 1, I've been using one for over 10K mile without issue 2, I have not yet seen a good used flywheel for a Y-Block. Every one I've seen is cracked and that cannot be fixed. Resurfacing makes it pretty again but the cracks are still there and will be apparent once relatively few miles have been put on it. Another benefit to Mummert's flywheel is it comes drilled for the 11" long pattern and 10.4" 80s Mustang pattern which gives you lots of options for a clutch. One thing to be aware of if you do use a diaphragm clutch (Mustang) is they tend to be thinner than the stock long clutch, which will affect the geometry of the fork and could lead to problems if not corrected.

[62bigwindow]

Yea,I found that out also. Looks like Mummerts it is. With the diaphram clutch you mentioned some geometry issues. What is the proper way to correct it? Is there a throw out bearing to take up the size difference or is there enough adjustment in the clutch to fix?

[charliemccraney]

The way to correct it will involve custom parts, either the throwout bearing collar or fork pivot screw will have to be made to account for the difference.

I think companies like Ram and Centerforce make diaphragm clutches to fit 11" long flywheels. You might check with them. I would expect a diaphragm clutch designed to fit in the place of a long clutch to have the same dimensions where necessary. On the other hand, the engines these clutches would usually be used with have a plethora of options for correcting geometry. There are many 1/2" thread pivot bolts for sbf but the Y uses a 9/16" thread which does not seem common with any other engine.

[62bigwindow]

What did you use on your set up?

[charliemccraney]

I'm using a Centerforce Dual Friction for the Mustang and will need to address the geometry issue.

[charliemccraney]

Oh, the mustang clutch and most aftermarket 11" clutches will not work with a stock transmission. The input shaft is too big and the spline is different. I have a T5.

[ICEMAN6166]

i have a 12" disc for the big splined input shafts, so it would be nice to have a matching set, which i did once when i took that apart.
i cannot remember though if it came from a y or an ft, bus or truck. regardless only the disc seems to have followed me here.

The flywheels are not the same

in relation to the 223\262 vs y flywheels i pretty sure they are the same like Rich said, if you know of a difference please tell.

i had a pile of flywheels from those and a crate of starters, i never paid any attention,if i needed one i grabbed from the pile, even sold some and shipped them. might have swapped ring gears on them too.

it was $30 to ship from Alaska to the eastern 48 , flywheel is 30 lb..

[charliemccraney]

I don't know from first hand experience. I thought this had come up before and remember that being the conclusion. So I might be wrong. The most significant difference I would expect is the crank bolt pattern.
I can check the parts manual to see if that indicates any difference.

In addition to Mummert's flywheel, Fidanza make an aluminum flywheel. Neither reference the 223 or 262 in addition to the Y block for fitment.

[ICEMAN6166]

ill look them up in the flywheel listings at work monday, that will tell us.

[charliemccraney]

In the '57-'66 Ford parts manual, it looks like there are 8 unique part numbers for 223, 262, 272, 292 flywheels. 3 of those numbers are common to them all.

If 3 are common, then they must all mount and probably work. The differences are pressure plate bolt pattern, or automatic.