Basically heres my problem i'm trying to get fixed. Everything is fine for the most part, soon as I hit second gear and start moving i'll hit 3rd wind 3rd gear out and soon as I let off the gas I start smoking. The guy that helped me install this motor said that its normal but I don't believe that. He also said it could be a kinked oil return line which is does have a small kink in it but i'm taking care of that tomorrow. Also said it could be the internals of the engine showing their age. Any thoughts or ideas on where I can go with this to get this resolved?

Could be a number of things anything from a parts store pcv valve (use a motorcraft) to a blockage in the breather to some broken rings or a bad turbo. could even be a leak.

this happened to me before when i was n/a, turned out to be an exhaust gasket