As in 3.75" stroke combos, not 4.15" +

My old build made peak HP at 6300-6400, I shifted at 6500 and went through the traps at 6800+

New combination makes peak HP at 6800 and I expect will go through the traps at 7000+... won't know where it'll want to be shifted until it sees the track again

Thx


2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)

1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)