I know when i shift at the tree i send the RPMs up to 2,100 and keep the car in 1st then soon as i hit the 4,800 mark it hit 2nd and then just at the 1/8th mile line is where I hit 3rd around 5,200 and i cosistantly run a 2.1 60ft with a 1/8th mile time of 9.3 at 75.**mph so basically i manually shift the car I do it even on the street because if you keep it in Drive and stomp on it it sends the RPMs to 5,500 or something and the car runs out of power in the area at least mine does..lol..I'm working on a shift kit know and a 2500 stall w/4.10 gears this should get me in the high to mid 8's in the 1/8th hopefully
Hope this helps
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