Quote:
Originally Posted by JRMichler
Or put in a vacuum gauge and practice DWL. If you run consistently at 12 to 15 In Hg vacuum or higher, a taller final drive ratio will help. If you are consistently less than 8 to 10 In Hg vacuum, your existing final drive ratio is good.
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My goodness, 15 in Hg is high vacuum? My car runs at...21 inches
