Not sure where you're headed with this Tom. 18deg at 18 lbs is low according to your own post where "guys" are running 18deg at double the boost. So 18 at 18 is low. I would be around 9deg at twice the boost. Not sure what you mean. No disrespect.
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1964 GTO
501, Edelbrock Heads NA, 3460 lbs.
9.76 @ 137mph
1971 Trans Am Lucy Blue, 11.56 @ 115
1966 LeMans. 6.0L LS single turbo, 8.85 @155 mph
1976 Trans Am twin turbo 462, SD Edelbrock heads 8.03@171 mph
2009 G8 GT
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