K&N CAI, Stainless Works Headers and Tune
 

Just picked her up after the headers and tune and it pulled 401. Baseline was 371 but the K&N CAI was already on it so I'm happy!

LS3 or L99 ?

At 401 with those mods, I'm betting LS3

How much would 400 to the wheels be at the crank

Estimating a 20% driveline loss due to the auto tranny, around 500bhp.

Usually when someone says like out at the store my car makes 300hp for example are they talking about crank or to the wheels

On a stock car most people are talking about crank because they never dyno their car, and people like to brag about higher horsepower. On a modded car most people talk about HP at the wheels.

I agree...for ages people just used crank hp as a reference....not rwhp.

i have about the same setup as you and got 401, probably could have gotten better numbers with some better gas...

Yes LS3 and RWHP. I wonder about the gas too. I usually fill up at a 7/11 or Costco every now and then. Everything here is 91 with 10% ethanol.