4500 pi or 4000 pi??
 

Right now i got 4000 pi stall but thinking in getting 4500 stall right now i have a 3.73 gears later gonna put some 4.10..i mostly not use the truck just track..i want good number at the track what u all recommend or good advise..mods are in the sig..thanks in advance

How high does the 4000 flash, and what does it drop to after the shift?

Well never got a good run on the truck cuz tranny was bad now tranny doesn't work so that why iam thinking in swapping it..dont know to much about that flash?? How u mean?? The only thing know it lock up around 56 drops to 2000 rpm

You need to find all that stuff out man so you can see where you are first.

bigger stall, bigger cam.

I wouldn't run either one. Yank ss4000 for track times.

Agree i got myself a yank pt4400 can't wait to test it out!

4500 especially with a good size cam.