4 spd. Question

I cannot imagine what might cause this. Maybe it's possible you got a completely oddball snout, such as....

They made A833 setups in overdrive for chev in a chev bolt pattern (special) case to bolt directly to a chev pattern bell. Maybe those used a shorter snout and the bell face to clutch distance was shorter. Maybe someone adapted this one to something and machined the snout shorter

otherwise, you have something wrong in the clutch. Have you changed the disc? It would not be unheard of for the disc to be defective.......wrong lining, something wrong with the wavey spring, etc, or MAYBE the pilot bearing is binding preventing release, and you are simply moving the assy too far trying to release it.

Can you access the bottom of the clutch area? (Open inspection cover?) Have someone release the clutch and examine the movement, and measure the disc clearance with a feeler. My memory slips, but seems like .060 or so is all you need for release. Do a search, you should be able to find the release clearance.