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Old 08-28-2008, 06:51 AM   #5
jon6.0jon6.0 is offline
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Join Date: Aug 2008
Posts: 7
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Make sure your springs are rated for the new valve lift.
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2005 GTO, 6-speed, LS7 clutch, Lou's short stick shifter handle, 242/248 .621/.615 on a 111, Comp Cams 921 dual valve springs and titanium retainers, FAST 90 intake manifold, Volant CAI, Kooks 1 7/8 headers, no cats(shhhh....don't tell anybody, lol), full 3" true dual(no x or h pipe) exhaust, Spintech Sportsman Street Mufflers. Dyno'd 435rwhp/395rwtq in 117F weather.

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