Originally Posted by thunderstruck507
Thanks. It's actually a 3.42 rear gear and 275/50r15 tire which is around 25" tall.
Think it's just too much time spent looking at fbody times here. Seems I see a lot of the ls1 cars on this site trapping 95-96mph in the 1/8 are around 120mph 1/4.
I don't recall the shift extension off hand. I want to say during a run it doesn't fall below around 5,000rpm on any shift.
I hear you. I have been a Chevelle guy all my life. It's hard to compare them to these aerodynamic newer cars.
The shift extension engine rpm is also dependent on converter slip during the shift just like it does at the line launching so engine rpm will only drop to as low as the converter drags it down. Most likely when you first shift into 2nd you will notice rpm will climb slowly until the converter speed more closely matches the wheel speed and tightens up.