I pulled my clutch out when I removed the engine and its smoked. But my bridgeport i pulled and flywheel are unknown year so I measured it and was confused. The clutch disc measured straight across at around 218mm and the pressure plate contact surface area measured pretty much 225. The flywheel does not look like a normal flywheel from the parts pile but am not sure. I really need a clutch to put this back together asap so in need of help! Just to be safe I was gonna get the 215mm because I was thinking it would work fine with a 225mm flywheel but after searching im not sure anymore.... thanks members.

 

You can identify the flywheel using this link. Flywheels

1979-1982 = 215mm clutch
1983-1985 = 225mm clutch

If you have a lightweight steal or aluminum flywheel post a picture and I know others can help.

 

After checking it over I think its just an 84-85 flywheel... just never had one before. haha And found out I have a 225 pressure plate with a 215 disc. Its got some pretty good hot spots tho so I managed to find a couple really good used clutches in my spare parts. thanks for the help and the link!