My 8-71 is what it is ........a nice blower if you want only 9-12 on a 500+ cubed engine, it'll make a GREAT street blower! I want a little more, a newer more efficient blower would do it. My engine again is a mild Bracket engine built by KRE to go rounds be consistent and not break (to often). I'll match my car and engine next to any car weighing in at 3,200 lb and running 9-11 lbs of boost with a same 8-71 roots blower........apples to apples! Just saying!! FYI I've seen 500 cubed NA cars run 6.70's.......hell 6.50's in 80 degree weather!
GTO George
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