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08-20-2017, 11:34 PM | #23 |
Senior Member
Join Date: Apr 2003
Location: Aberdeen SD
Posts: 642
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Re: 1971 Buick 455 GS F/SA G/SA Build
Dwight,
I see, and in this case it works out the same. In actuality, NHRA would multiply the 11.85 Index times a factor of 1.0517. It's an inverse relationship, but due to the number of decimal points the math is carried to, there can be a difference of a hundredth in the factors. Jerry |
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