I am looking for ideas for launch rpms, or adjustments to make for better and more consistent sixty foot times. My current setup it a bickel chasis kit 2005 S10 with a sb2.2 motor. I have a 6800 rpm converter with a two speed glide and 4:56 gears. I haven't experimented too much with launch rpms, but I have with tire pressures. Right now I have a 5800 rpm chip in the two step becuase anything higher has caused the sixty foot to slow. The tires seem to like 8 1/2 pds best. Anything lower they wad up too much, anything higher it is very loose coming out of the hole. My best sixty has been a 1.16, but I have only backed it up once. Three weeks ago at Atco I was consistently 1.20-1.21, last week at cecil I was no better than 1.23. The truck has ran 8.48 @ 158.8 mph with a 1.19 sixty. I see much slower cars with better sixty foot times. I am looking for suggestions.