It could run low 11's, maybe even 10's. Obviously a lot of factors will contribute to that though. 3890lb 69 Chevelle, 496, 9.7:1, mildly ported 781's, 240ish, .580 lift solid cam, Perf. RPM air gap, Quick fuel 850, 10 inch converter, 3.55 gears, drag radials theu 3 inch ex, all the way out the back, runs 11.20's at 122.
Frank