I have a 60 corvette, running a sbc, what I think is a Lakewood adapter bellhousing to a 4sp 67 Ford toploader. I cannot get the car to shift when running. It seems to shift fine when the car is not running. I have swapped the clutch out 2 times. Adjusted the hurst shifter rods with a drill bit a million times, tried adjusting the linkage a dozen different ways. Out of ideas. I can see through the inspection holes that when the pedal is depressed, the clutch looks to be disengaging. used the same flywheel, just had it resurfaced, same fork, z bar and pilot bushing. It is running a ford clutch and pressure plate, I have adjusted the linkage to no free play etc. etc. just looking for ideas before I take the tranny out again.