I had installed a Ford Top Loader 4-speed (1 3/8 spline) behind my 312 and had to grind down the clutch fork to get it to fit around the throw out bearing. There must be a better way.

Has anyone else found a later model clutch fork that will work with the original 292/312 bell housing and attach to a larger throw out bearing.

Thanks in advance for any advice.

Were you modifying a clutch fork for a small input tranny to fit the larger input throwout bearing?  I used the 428CJ clutch forks when using the big input fourspeeds in the car bellhousings but I had to also change the pivot that fastens inside the bellhousing as the later model clutch forks used an integral spring instead of the wire clip that was common on the early models.  I never tried adapting the Ford pickup clutch forks that were designed for the 1 3/8" inputs and those were found on a majority of Sixties three speeds.

Yes, I am modifying a stock 3 speed clutch fork to fit the larger input throwout bearing.

Thanks for the info on the Sixties Ford trucks. Are you referring to trucks with y-block engines?

I did some checking though and find that David Kee Toploaders Inc. does offer the stamped steel design large input forks and also the corresponding fork pivot if anyone is interested.  These look to be the same as the Cobra Jet pieces I've used in the past when transplanting big input fourspeeds where they did not originally reside.  Here's the link.

http://www.4speedtoploaders.com/ 

John

Hopefully I can contribute some meaningful solutions to my fellow Y-Blockers in the future.