Picking the right gears for 1/4-mile

The cam is pretty small, it's the 256/262 version with .454/475 lift w. 1.5 rockers, I have 1.6s so it's a bit more. Lunati says it makes power from 1000-5500 rpm and describes it works for smaller milder engines... Like I said monster torque curve that starts low at 2000 rpm with this 360/magnum/10.5:1 setup. I think I'll try 3.91s at first but with this torque I can tell I'll need some traction aids. I'll also try a bigger carb and have the exhaust redone, the pipes off the shorty headers were not well made.

green1 my ET was 15.3 sec.