350 oil Leak

[Scott26]

I have a oil leak i cant find. The oil is coming down the passanger side of the motor. It runs down the starter and blows all over the tranny and front driveline. I have checked dip stick,I checked and felt around the oil sending unit but i couldnt feel fresh oil. I also checked valve covers. i looked at the rear main to but i do see it coming from there. Could it be leaking between block and the heads?.it feels like oil back there i think. I found a piece of gasket sealer laying on the the bell housing.