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Old 12-11-2007, 01:48 PM   #1
mannymen
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Default Re: anyone tried these?

Dyno tested them two years ago on a 427 big block chevy (Hooker 2 1/4 Pri, 4" collector). Lost 10 HP in the range I needed and picked up 10 in the torque dept, but in the 3000-3300 rpm range.
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