For best performance in my Dart, the 2 step is set at 4500 and I shift at 6500. The trans has a 3.04 first gear, 2.00 second, 1.38 third, 1 to 1 fourth, aluminum flywheel, aluminum pressure ring in the Soft-loc clutch and 4.30 gears in the Dana 60, 9x28 slicks. My best 60' 1.47 shifting second 50' out, best e.t. 10.63, best mph. is 126+.
Engine is a 10.43 to 1, 416ci, cnc ported Indybrock heads, and Bullet roller cam(specs above).
On the street the cam likes to cruise between 2500 to 3500 rpm's