Join Date: Jul 2009
Location: in a loony bin in N.J.
Re: F-SUPERDUTY master cylinder
i did many many years ago on my 89, 90, and 91 trucks. it was not an exact match. i had to ream the bolt holes a bit because the F-SuperDuty master mount was a little wider.
and the port in the booster the master fits into needs to be enlarged a bit because the master is a few thousands larger.
the modifications were well worth the benefits of the larger piston bore in the master.
owner of almost to many fords.
If you want the moral high ground, make sure you're not standing on a hill of horsecrap.