bear with me...i've gotta ask a stupid question.

this is my first time replacing a clutch ('65 F100).
from the casting #s, the engine appears to be a '75.

i've removed the clutch. the friction plate is 10" across.
everything RockAuto lists says 11".

am i measuring the clutch correctly?

 

Ford used different size clutches, later models are mostly 10.5 or 11".

What transmission? Does the flywheel have more than one set of holes to mount the clutch?

You should be able to swap the flywheel for a later model and use a larger clutch. Or when you have yours resurfaced just have the parts house match one up.

 

Thanks Baron-

Stock 3-speed column-shift transmission.
The flywheel does seem to have different sets of holes drilled. Probably hard to tell from the pic, but some holes seem to be just slightly inside.

for the most part- the holes are 11" apart.
the disc itself is 10" across.

 

i just looked up a clutch for a '65 with a 240...
it lists a 10" clutch.

i'm thinking this engine may have a 240 clutch/flywheel setup on it?