Guys,

Leaking oil on the back of the engine from the intake manifold.
I put a new manifold on my sbc 350. It's a 1964 block (going by the casting #'s). Right from the start I did not like the black rubber gasket that just laid on the block. I siliconed it in place but when I tightened the manifold it "squeezed" out. I lifted the manifold, cleaned all silicone and made sure all was dry and grease free, reapplied some more silicone and put the black rubber on the block and let it set for an our and this time it stayed when i tightened the manifold. But now it blew out again. The gasket set came with another gasket with two little nipples that I assume are for a block that has holes in it?
1. Is this a high pressure area?
2. How much oil should come out the distributor hole if the dist. bolt is only snug? (I think I have a leak there also).
3. Is this a common spot for leaks? Any tips on getting a good seal? I'm thinking of drilling a couple of holes and using the other gasket with the nipples?
Thanks in advance,
-Brad