It's a 2001 silverado 5.3, weighs about 4k. It has stock heads with shorty headers and just a gm hot cam, springs, rods and retainers. Built tranny with an edge 3600 stall. 4.11 gears and true trac. Also it has a 100 shot. I am running on the track with 275/45-20 all the way around so I baby it off the line not even stalled up at all. It ran a 12.9 on bottle. Is that where it should be?*Could I cut down the time a bit by putting slicks on or maybe even caltracs? I feel like I should be able to stall up more of the line at the track, even with the 20's. But it just doesn't help. Any help would be great. Thanks


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