I went again last night, but with the Firebird. The only significant departure from stock is the Hooker cat back. Everything else is stock or stock replacement. 305 TBI, 5 speed, 3.08 posi, WS6 (for those not familiar with GM stuff, that is performance suspension, different springs, wider wheels/tires, bigger roll bars). The best was16.848 @ 83.16. It has the same launching problems as the truck. I was expecting it to leave better. Street tires suck. The weight with me and some other stuff was 3590 and the tire size/gear ratio combo works out to about the same as the truck so I had the same issue, not enough track to get into 4th. So I can say that my truck is faster than my "sports car" in a straight line, anyway.
We swapped the cam in Tony's Duster last weekend to something smaller with more overlap and swapped to a lower rpm intake, from performer rpm air gap to a performer. The plan was to make it less peaky but to try to keep the averages pretty close and make it more street friendly. It seemed to work. He only slowed 4/10s, 15.1s (the 14.6 above happened when the water/power steering pump belt decided to retire. 14.7s were consistent) and says he's much more happy with the driveability. There's an electrical gremlin with the ignition so he put it away for the night before trying different shift points and launch rpms. So it may be even closer to what he ran last time.
One race was pretty fun. It was a turbo 4cyl of some kind. I could hear the turbo and blow off valve when he shifted behind me and then after about the 1/8th he blew by me, ran 13 something. When I got my time slip, it turns out that he was asleep, a 1.6 second reaction time and mine wasn't great so I got about a 1 second head start and that was the best run of the night for me. Up to the 1/8th I was thinking "why did you waste money on that rice burner?" After the 1/8th I was thinking "open mouth, insert foot." Sometimes I forget they can be fast.
Lawrenceville, GA