Dyno Results

Looks like a tight convertor and a torqie engine alright.
You're almost in line with a buddy's GTX 440. He was in the 11.60s at 115 with a set of my 915 heads, the .528, and a matched single plane M1. He ran 4.10s with a 27" tire. I'd tell you the same thing I told him: give it a little more cam. Another 10-12° @ .050 and another .050-.060 lift at the valve will help the upper end pull. It would also allow a looser convertor to quicken the 60 and pull harder through the lights.