[decooney]

REDSC400,
not that you are asking, but are you sure you have 4.11 gears in the rear? With a 428 and a (wide or close ratio) Toploader, I can't imagine using anything lower than a 3.31 or 3.08. Even 3.54s are getting low in a big block Cobra for the street running with a Toploader. Maybe I'm missing something.

I've run 3.08s, 3.31s, 3.55s, 3.73s in various cars, this car, other Cobras, and really like the taller 3.31/3.08 setup in a 2500lb car with a torquey 428 big block and 4spd. Like a sling shot. The motor torques right through it pulling like a sun of a gun. Heck, if I need to I can start out in 4th gear. 3.31 or 3.08 with a wide ratio Toploader is really a nice all-around setup if you must keep the 4speed; 3.31 being more common.

In 4th gear, how many rpms are you taching at 60mph?