more like taking away HP's by using them. 1300 cfm on a stock 78is way too much. You'll need a biger cam than those penut cams that ford use in the late 70. and you'll need to bump up the compresion to about 9.5 or higher to be able to use the cam.
If you want to run dual carbs, go with two 450cfm and a larger cam.
__________________ Black,79 Mustang mostly carbon fiber/kevlar body, M-2300-k brake kit, full roll cage, maximum motorsport suspension, custom geared 6 speed, 2 inch rear fender flares, 1 inch front, motor being built (no eta). Looks like the Mad Max interseptor and weighs about 1800lbs w/o motor (450hp 351w installed to move the car around)
Black, 82 Capri RS 5.0L, B303, 1.7 rockers, World 180 heads, +150hp N.O.S, Turbo coupe rear end, T-56(tremec tko would be beter), 80 cobra nose | 
How much power? 
