[aumoore]

I just got out my Edelbrock catalog and I was wrong on the torker II intake. It is a single plane design with a pretty narrow rpm range of 2500-6500rpm. The Performer RPMis designed for 1500-6500rpm so you will gain an additional 1000rpm down low where you can really feel it.

In the catalog they have a dyno chart for a 351 windsor(stock c.i.) using Performer RPM intake#7181(not a Air Gap), Performer RPM heads #60259, performer series 750 cfm carb #1407, 1-3/4" headers and a performer RPM cam#7182(specs I/E duration@0.050 224/234 degrees, lift .496/.520 with a 110 lobe seperation). This Combo put out 400HP at about 6000rpm and 412ft/lbs at about 4500rpm. The torque was about 350ft/lbs at 2500rpm. Your engine shoud put out 10 to 12% more power because it is about 12% larger. 440 HP and over 450ft/lbs sounds like more than enough in a Cobra.