Best "raw data" run bone stock was 11.89 at 113.75 w/ 3/4 tank of fuel. Corrected to sea level that's a 11.94 at 113.41. To be honest, that's something of a "unicorn" run for this car.

Best run to date is w/ K&N drop-in, aftermarket wheels & tires, and about 1/4 fuel level was 11.83 at 115.80, which is 11.87 at 115.6 corrected to sea level. That's by far the quickest & fastest pass to date.

The front wheel assemblies are definitely lighter and reduce rolling resistance; the rear wheel assemblies are heavier than OEM, but the car can hook up more consistently at lower tire pressures. Something in that combination of filter + wheels & tires helps it pull a little more MPH, but it doesn't always show up every run.

Look at the last three runs at Capitol on 3.25, which is the last event I ran "bone stock" w/ OEM Nexen drag radials... the corrected numbers are:
12.08 @ 113.30
12.15 @ 112.73
12.07 @ 112.90

Look at the last four runs from Mason-Dixon on 4.30, which was the aftermarket tire & wheels + K&N filter, where the corrected numbers are:
11.94 @ 113.53
11.99 @ 113.35
11.97 @ 113.50
11.99 @ 114.41

Only the first pass was actually in the 11s that day, and it clicked off consistent 12.0s the other three. FWIW, the fuel level was 3/4+ that day, which is about a half tank more than I run usually on track days.

When you take the differences in track conditions out and standardize them to the same atmospheric baseline, there's maybe a tenth and 1 MPH found w/ the tires & wheels and filter. But you don't see any "unicorn" runs here cuz the good air is taken out of the equation.

Can my full-interior 1320 run 11.8s "bone stock"? Yeah, but it's not a guaranteed thing. I'm still of the opinion -- based strongly on my own data which I don't make any effort to hide -- than a stock "full weight" 1320 is basically a 12.0 car. Pull my front passenger and rear seats and there's maybe 120 to 130 less lbs to haul around, so possibly 11.8s at 114+ w/ me under more typical conditions. Throw my son behind the wheel who weighs 70 lbs less than I do and maybe it's a 11.7 "stock" car w/o needing killer air.

However, having the best ET with this car doesn't matter much to me. Some 1320s seem to go faster, others are comparable to mine. I like the car and it's cool that I can take it to the track, as well as use it as my daily car.

Last edited by Brad_Haak; 05/04/22 08:33 PM.

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)