Going to replace clutch/presure plate. Does anyone know the size of 1981 Corvette 350, 190 HP? Parts store said its 10 1/2" or 11" . Teeth on the spline can be 10 or more. Like to get the set before I take it down. Thanks Roxy

Roxy,
The clutch for your '81 should be a 11" with a spline of 1-1/8 diameter and 26 teeth. That is what mine is with the Borg-Warner/Richmond Super T-10 transmission.

BTW- I highly recommend using a CenterForce Dual Friction clutch. It has a nice light pedal and has excellent holding. 90% over stock units.
P/N-DF148552
Hope this helps!
Sarge

Thanks Sarge,
What do you think Of Hayes Clutch. Saw one on vettefinders, new in the box.
Thanks again,
Roaxy

I'm under the impression an 11" clutch has 168 teeth and a 10.5" clutch has 153 teeth. Is this true? Any exceptions?

Patricia/'75

Singedfur said: I'm under the impression an 11" clutch has 168 teeth and a 10.5" clutch has 153 teeth. Is this true? Any exceptions? Patricia/'75

Patricia, that would be the amount of teeth on the outer edge of the flywheel (where the starter engages). 168 tooth flywheel =14" diameter flywheel, and 153 tooth = 12.75" diameter flywheel.
You can run a 11",11.58" clutch on a 14" flywheel, and on a 12.75" flywheel you can run a 10.4" or 11" clutch. We where talking about the # of splines on the input shaft of the transmission. That is where the clutch disc slips over. Hope the clarifies things a little.
Sarge

Where I've gotten a little confused is my old invoice for my flywheel listed 168 tooth, 11" flywheel. Did they really mean it was a 168 tooth (14" diameter) and would take an 11" clutch?? I"m about to order a McLeod wheel that's also 168 tooth but the tech guy suggested his 12" clutch to go with it. Is that just rounding up an actual 11.58" clutch?
This is confusing! Thanks, Patricia

Patricia,
I would stick with a 11" clutch. That's plenty big enough. If you are looking for more holding power, then you can look into a CenterForce Dual Friction clutch. They are a little pricey ($300). I have one in my car and am more than happy with it.
Sarge

I was impressed with the Centerforce Dual friction setup
Installed when the minny mouse 350 was changed to mighty
mouse 383