I data loged the the 7 AT in the 12.42 run.
I have the time that i actually shifted at and when it engaged the gear
Launched at 2500 rpm.
1st to 2nd 6400, 1.13 sec
2nd engaged at 5237, shift time 0.3 seconds
2nd to 3rd @ 7475 , 1.5 sec.
3rd engaged at 5237 , shift time 0.31 seconds
3rd to 4th @ 7712 , 2.9 sec.
4th engaged at 5525, shift time 0.39 seconds
4th to 5th @ 7700, 5.15 seconds
5th engaged at 5587, shift time 0.68 seconds
5th to 1320 ft. @ 5812, 1.74 second.
This is with the stock preasure settting on the 7 AT with 4.08 gears.
the only bad lag is 4th to 5th. " so you still think that you can out shift me with a 6 MT "
All reading taken with the cobb. ( elasped time vs rpm )
i am going to have my transmsion fluid checked next week as to make sure that it is full.
as it is very hard to fill it after i had the torque converter changed, this will be the 4th time that we are checking it and each time we are adding more fluid to it. It makes a big diference for the 4th to 5th shift time.
Talked to Sam about this and he is sending me an uprev tunner cable so that i can increase the clutch preasures.
i also short shifted 1st gear, did not take it to 7800 rpm.
there are faster times in this car.
I have not not trouble racing guys with stick shifts. The only thing that beat me out of the hole was a dodge hemi 4 wheel drive jeep. ( unbelivably fast) but i ran him down at the finish.
I gave many corvettes a good run as they were all behind me at the 1/8th mile.
My 60 ft times where 1.855
330 ft @ 5.22
1/8th @ 8.020
Mph 1/8 @ 88.83
1000 ft @ 10.410
1/4 @ 12.42
trap 114.39
It should be noted that the factory tack is out by 250 to 300 rpm (8300 on the tack = 8100 cobb. redline is set for 8100 and it will hit 8300 and redline. Not sure waht the error is at 7500 rpm.
I shift in the MM mode, its way quicker than being in " D "
Just think what a
VB upgrade will do for the 7 AT
If we can reduce the lag by 50% in the 4th to 5thth gear change this car would go easy 12.0, to 12.2's.
I must tell you guys that the track prep was perfect as it was glued for 1000 ft. there were no traction issues at all.
My GTM stage 2 SC is all most done, a few more weeks as he is dynoing it very soon on somebodys car at his shop.
can not wait to see what 460 or more rwhp will run at the track.
Z