S1 3800 (L27) heads - Page 4 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat

Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 02-22-2010, 02:58 PM   #31
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Ran a test the other day at WOT to see what kind of air I was pulling. TunerPro recorded .53 grams per second at 5400 RPM. Not exactly sure what that means.

On another note, I found the reason for part of my problems. I have at least one burned valve.

Getting replacement low mileage (85k) heads in about a month.
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