I pulled the engine and trans today on my '83 Chevy 3/4 ton pickup with a 4 speed trans. I took the clutch apart and noticed a few things. The inside of the bellhousing seemed to be quite oily. There didn't seem to be oil on the flywheel or around the rear main seal, so I'm wondering if the seal on the trans side could be bad? Also, does anyone know what the clutch disc width should be? Mine measures .308" and it is an 11" dia disc. The depth to the top of the shallowest rivet head is .050" (both sides). Is the clutch close to being worn out, and should I replace it and any seals now? Are there other things to look for that I should be aware of? Thanks for your help.