327 cu in Chevy. Compression test number 7 spits out lots of gas when cranking.

What is your question?

I have removed exhaust manifolds and all 8 spark plugs. Cranking compression is 180. I have readjusted valves. Hydraulic lifters. My compression in other cylinders is between 150 to 180. Number 7 is 180. Rocker arms, valves all appear to be working correctly. Gas spits out when cranking. While adjusting other cylinders gas continually spits out. A lot of gas. Need your help please. I had heads vacuum tested before installing. Gas only spits out number 7 spark plug hole. I’m stumped

What makes this problem better or worse?

Nothing

How long has your 1990 Chevrolet Corvette had this problem?

Today as I did compression test