Flywheel Identification

[John P.]

I was cleaning up and came across this flywheel and am not sure which one it is.
I'm thinking it is a 10" single stage flywheel.
Would that be right?

 

[Destroked 450]

Measure that wear ring and it ll tell you what size clutch disc was on it

 

[WayneIA]

That looks like it could be a flywheel from a Jubilee with original holes drilled for a 9 inch pressure plate and clutch and redrilled for a 10 inch pressure plate and clutch

 

[John P.]

The wear area is 10".
The flywheel itself is about 13-1/4" including the ring gear.

 

[John P.]

I wonder if Ford ever made a dual pattern flywheel.