Yeah, that was my old stuff, all different now. Converter was an off-the-shelf Hughes 3,500 "street/strip" 10". I could never launch the car very well because the brakes sucked (seriously) and would barely hold it. I would leave just above idle, like 1,200-1,400. If I had more starting line RPM it clearly would have been better. It was an adventure trying to stop the thing too. I would usually have to use the last turnoff and I wasn't even going that fast. They were '65-'72 KH style with aluminum calipers that never worked well in any situation.
I have a Dynamic 9 1/2" converter now that was custom made to my combo, should help wake things up. I also have better brakes too.