I could never get my Excaliber, stock 302, T5, 3.50 gear with EXCELLENT 16" rubber for traction,,,, out of the low 14's.
But yeah, pretty much any "normal" Cobra with a very mild 302 will run in the low 13's, high 12's. TRAP SPEED is a whole different issue. That's the number that separates the big blocks from the small blocks.