I have been all over the web looking and can't seem to fine what i need.
The disk is 12 7/8. Is this what they r calling a 13"?
10 splines
1 3/8
can someone help.

 

There are two different 13" clutches listed for 1990/92 F600/700/800's w/a 429. Ford truck parts catalog is vague on what the differences are.

Contact FTE Ford Dealer Parts Dept sponsor Tousley Ford (tousleyfordparts.com) for assistance.

Tousley sells FoMoCo parts at dealer cost + 10%.

 

thank u so much. ill try them.