Insane Oil Consumption, 427 LS1...
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Join Date: Sep 2005
Location: 415 Northern CA
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302's are known to not make much power. Less power=less vacuum. Of course the weak vacuum on the 302 will not induce oil consumption issues. I can only imagine how ridiculously high the vacuum on his 427 decelerating from 5000 rpms in gear is. It's already high in just the LS1. I am guessing it's a valve seal problem.