10 1/2" Clutch on 11" Flywheel

[73RRSunroof]

I am building a mild street 440. I had to go with the 143t 11" flywheel because of the bell housing and starter I already have. The flywheel I bought has both 11" and 10 1/2" pressure plate provisions.

Has anyone used a 10 1/2" clutch on a 11" flywheel? I have both and am curious if the smaller clutch would be any benefit.

 

[mopar 3 B]

I see no benefit and apparently Chrysler did not either since they later put a 11" clutch on a 130 tooth 10-1/2" clutch flywheel.

 

[R/T Boy 67]

If the 10 1/2" clutch will do the job, I would go for it. Less weight to accelerate, and easier on your syncro rings. Talk to the clutch manufacturer about your combination and driving style.

 

[peabodyracin]

For what it's worth, many years back I used to run a 10.5" clutch disc with 11" pressure plate setup on a drag car. That was supposed to be the hot ticket for easier shifting. Wanted the heavier pressure plate for added inertia to help launch the car (3450 pds). I always felt good about the setup. The car launched good and I never had any trouble with it. I see no reason why a complete 10.5" setup wouldn't work just fine for you.

 

[Dipstick]

Max Wedge and Race Hemi cars had 10 1/2" clutches.

 

[toolmanmike]

Max Wedge and Race Hemi cars had 10 1/2" clutches.

And they didn't last long. A friend had one back in the day and he has told me about how fast he could put a clutch in.

 

[toolmanmike]

Contact Brewer Performance. They can steer you in the right direction.

 

[mopar 3 B]

If the 10 1/2" clutch will do the job, I would go for it. Less weight to accelerate, and easier on your syncro rings. Talk to the clutch manufacturer about your combination and driving style.

Dont get the reasoning easier on syncro rings. The clutch disk is the only thing that rides on the input shaft and does not make much difference in weight. None of that weight rides on any shaft with syncros.

 

[mopar 3 B]

And they didn't last long. A friend had one back in the day and he has told me about how fast he could put a clutch in.

That was my experience also. Got to where it was the only spair part carried to the track.

 

[wyrmrider]

'11 has more inertia (depending on materiel)
IMHO 11 for HD
10.5 for HP