85 degrees outside and 18 degrees knock retard - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat
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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 08-22-2006, 01:52 PM   #21
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You need to check the fuel pressure at WOT. On a series II L67 it should be 53 with vacuum off (so about 42-45 at idle with vaccum on) + 1 psi for every pound of boost at WOT, sustained. Series I may be little less thant that but I'm not sure.

My car at WOT is 53 + 15 or 68-70.
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