Quote:
Originally Posted by mopar jeff
So if my combo has a factor of 15.01, then I would have to add 15.01 pounds for every horsepower they assess?
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Any car that goes more than -1.40 under the Index, has to add 3.25% to the at-the-time HP rating. Max Wedge 426/415 = 415 x .0325 = 13.4875. All numbers are rounded up, so it's 14 HP, and your car is a now a 426/429.