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By JPotter57 - 13 Years Ago
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Will an 11 inch clutch fit in a '57 Ford car bellhousing? I have both a 10 and 11" clutch, both are 3" tall, seem to fit in the bell, but I didnt try the fit with the fork yet. I have both flywheels and they are the same just drilled for their respective clutches. If I can use an 11", I'd rather do that....
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By NoShortcuts - 13 Years Ago
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Yes, you can use a 10 inch or 11 inch clutch disc assembly in a stock y-block bellhousing. As you stated, you'll have to change flywheels because the pressure plate bolt pattern is different for the 10 inch pressure plate than it is for the 11 inch.
I'm not sure if the throw-out bearing is different for the 10 inch pressure plate than for the 11 inch. In the 50s Fords, FoMoCo used Long style pressure plates for both assemblies.
Hope this helps. 
Regards,
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By LON - 13 Years Ago
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I had my stock flywheel drilled at a machine shop to suit an 11 inch clutch .That way I could use either 10 or 11 inch clutch .Sure beats changing flywheels all the time .I used a stock throwout bearing when I bolted up a Top Loader gearbox .Totally a different car to drive with a 4 speed . Lon
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By slumlord444 - 13 Years Ago
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While we are talking clutches, replaced my long style clutch in the T-Bird with a diaphram type replacement 11" for a 390 pickup. Less pedal pressure and much more plesant to drive.
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By gekko13 - 13 Years Ago
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Diaphragm pressure plates do generally have a softer pedal feel but they have draw backs as well. The travel or rate at which they take hold is not linear. This sometimes results in an abrupt lock up or chatter. Also, the Belleville (sp.?) spring that provides the clamping force can over-center and fail to release at high rpm. Imagine running through the gears, stepping on the clutch pedal, banging gears and then when you release pressure on the clutch pedal- it sticks to the floor! This can be a bit distracting. The Long style pressure plate does not have any of those characteristics. I would be careful using a stock type flywheel. They can and do come apart with unpleasant results.
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By JPotter57 - 13 Years Ago
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Advice taken on the flywheel. The Y that is currently going in my Custom is only a stock 292, will use the stock flywheel while I build my 312. I am planning on a Quicktime bell and billet flywheel for it. This 292 is just to get it running, and fabricate all the pieces for it, like my T-pan, headers, etc. I will drive it around a bit, though being a stock `63 (low compression) motor, will probably be a bit of a dog. Once I get started on my 312, I hope to be able to heat it up a lot, I want a set of Mummert's heads, but will have to start saving now for those, lol. I'm only aiming for around 400 hp, and with enough compression, building one like Glen's, I could hit pretty close to that with my G heads. My 312 is still in the planning stages now, I pretty much just want to drive my `57; I've had it 5 years. When I got it, hadnt been driven since `67.
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By junkyardjeff - 13 Years Ago
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When I got a new clutch for my 65 galaxie the shop gave me a diaphram pressure plate which required much more effort to push in and a friend had the same issues in his 64 and when we put a new clutch in it he went back with the long style pressure plate and it was much easier to push in so no more diaphram pressure plates for me.
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By slumlord444 - 13 Years Ago
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My experience was that the Diaphram clutch had less peddle pressure and was easier to drive and shift. I do not have a clue as to we would have opposite experiences.
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By John Mummert - 13 Years Ago
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There are different spring thicknesses for diaphragm pressure plates. If the P.P. has more clamping force it will be harder to push the pedal.
In the dim past I put a heavy duty diaphragm in a scrub and it was terrible to drive.
Make sure you have the clutch fork correctly installed on the pivot bracket in the bellhousing. If incorrect it can be very hard to push the pedal.
All new vehicles have diaphragm P.P.'s so I guess they're okay.
If the pedal sticks to the floor the pressure plate is probably being traveled too far. Also, you adjust the spring tension on the assist spring under the dash.
If you over travel a Long style they will re-engage.
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By aussiebill - 13 Years Ago
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slumlord444 (11/5/2011)
My experience was that the Diaphram clutch had less peddle pressure and was easier to drive and shift. I do not have a clue as to we would have opposite experiences.I agree with you, i have 2 yblock 4 speed cars both with diaphram p/plates and are firm but easy on the leg, and these dia p/plates are known in the world as gentler to use.
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By Ted - 13 Years Ago
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My experience with diaphragm pressure plates has been that the units that are designed to be used with hydraulic clutch assists are extremely stiff at the pedal when used in conjunction with a mechanically levered pedal. Looking at the original application for a pressure plate will sometimes get you around this nuance by looking specifically for non-hydraulically assisted diaphragm pressure plates when using them in a mechanically actuated application.
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By charliemccraney - 13 Years Ago
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So far, my experience has been that diaphragm plates provide a lighter pedal. The Mustang dual friction unit in the truck now provided a lighter pedal than the stock replacement long plate that was in there.
Actually, the stock replacement diaphragm clutch in my Firebird feels heavier. It is hydraulic.
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By slumlord444 - 13 Years Ago
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The one in my T Bird was for a 390 Ford pick up which would have had mechanical clutch linkage.
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By Canadian Hot Rodder - 13 Years Ago
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Ok can you help a rookie when it comes to manual transmissions. I am going to convert my car to a T-5 this winter. My friend Alex has all the parts I need (bell housing, flywheel, pedals, clutch linkage etc.) all I need to do is buy the pressure plate and clutch disk(I was told for a 10" clutch). I am going to use a Mummert adapter, can anyone recommend a clutch disc / pressure plate??? I was told that "Centerforce" is one of the best?????? (agree??) Any part #'s would be appreciated. Thank you!
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By Rono - 13 Years Ago
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I am running a Centerforce 11" clutch and pressure plate in my 56 Customline with a T-5. I just love it. Very light pedal. but the clutch holds like crazy. I spent the last 1/2 hour looking for a receipt with the part numbers, but so far I could only find the bright orange installation and instruction sheets that they provide. I think if you get on their website and tell the technicians what the application is they can get you the correct part #'s. Rono.
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By famdoc3 - 12 Years Ago
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I have a centerforce long replacement diaphram set-up it has raised fingers with my dual friction clutch it locks up smoothly and progressively with almost no peddle pressure to release. Makes the car a joy to drive even in traffic.
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By JPotter57 - 12 Years Ago
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I ended up going with an 11 inch Long clutch, had to rework my fork, no trouble. I also got the Mummert adapter for the T5 while I was at it. Hope to have it in the car in a couple weeks.
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