this problem have plagued my 94Z for awhile. changed the gaskets numerous times and last time i used GM part #12367777 gaskets with my GM LT4 intake. the passanger side seals just fine. visually around the passanger side intake ports there are definate lines showing the full width of the gasket sealing competly around the port and no mismatch. on the drivers side there is a definate mismatch, the bottom of the intake ports show little to no line, half the gasket around the bottom of the intake ports obstructing air flow and there is oil under the gaskets at the bottom of the ports and in the intake runners.

at first i thought the GM inake was the problem, replaced with Edelbrock LT4, still sucks oil and blows blue smoke. these are all new parts(Gm intake, edelbrock intake, gaskets ans AFR195 LT4s) with just 10k on the setup. i hvae measured the angles of the intake and heads, all with in 1 degree with the same dial angle finder used for setting pinion angle. so i don't know where to go from here!!!!HELP