Chris, not sure if this will answer your question but I just finished cleaning and buffing up my flywheel which is going behind a 261. I've see lots of flywheels where the area that the clutch goes against is "raised" a little and looks like a "pad". I don't know the reason but I've seen many this way.

...and it could be that the "pad" is how much you can turn one before it gets to thin or maybe its thicker to act as a "heat sink" to keep it from getting to hot and warping. Just my perspective, no documentation to back it up.


1937 Chevy Pickup
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1952 Chevy Panel
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1950 Chevy Coupe
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I'd rather walk and carry a Chevy hub cap than ride in a Ferd.
I can explain it to you, but I can't understand it for you smile