Excessive crank case pressure?

[saywhenn94]

I just fired up my car yesterday and was wondering how you tell if you have too much crank case pressure? It's a 306 that I put about 500 miles on last year in another car and now I have it in my 91 vert with a Vortech. I'm getting a bad oil leak from the front of my oil pan gasket, its a new Canton 7qt pan and a Felpro 1 piece pan gasket. I used the pan on this motor last year and had no problems and now it leaks, it also seems to be leaking from my rear main as well. The rear main has about 500 miles on it and was not removed during the motor swap. I'm wondering if the leaks are a result of excessive pressure in the crank case?

Thanks,
Rich