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mannymen · 12-11-2007, 01:48 PM

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.

12-11-2007, 01:48 PM	#4
mannymen Senior Member Join Date: Apr 2003 Posts: 728 Likes: 5 Liked 13 Times in 7 Posts	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. __________________ N/A