Not low 11's but 11.50 @ 116
66 Belv. 493, -516 iron heads, .530 cam, 9.5" converter, 3.55's and a 28" tall tire. I have a plate on it but have yet to open the bottle up. The converter is probably a bit loose, but I expect high 10's with a relatively small shot.
I ended up hitting the Belvedere with a 0.051 N2O jet. It ran a string of 10.95-10.98 once I got the timing where I wanted it, before I got a talking to for no roll bar
It had a 10.8x in it, but the track was going away and they shut it down before I could get the launch sorted
Car is 3700# at the line.
I basically use it as a daily driver during the 2 month MI summer...