1974 Pontiac Other

Engine Mechanical problem
1974 Other Pontiac Models V8 Two Wheel Drive Automatic 999999 miles

I have a '74' pontiac ventura with a rebuilt pontiac 350, I put a torker-1 intake and four barrel carb. The question is when its running, its blowing exhaust or something out of what looks like a port in the middle of the head by the intake, Is that what its supposed to do? Or is it not to blow through like that and shoud be covered?
March 13, 2008.

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