Getting hemi 5.7 to 500hp pump gas

Heres an article I found, looks like your not going to get anywhere close to 500, without major$$$ and/or a blower.
The 5.7 in my 07 charger, with a diablo tune, CAI, put down 305 at the rear wheels.
http://www.hotrod.com/techarticles/general/hrdp_1105_what_breaks_on_2008_to_2011_dodges/viewall.html

Engines
’09-’11 5.7L (345CI) HEMI
The Challenger R/Ts were factory rated at 370 to 376 hp and 398 to 410 lb-ft. Variable cam timing (VCT) is standard; automatics also get the multiple displacement system (MDS). For street use, DC Performance’s Lyle Larson says the 5.7 can tolerate up to a 30 percent power increase with no major short-block mods.
VCT issues (big cams): Serious performance cams aren’t compatible with the cam phaser. Software lockout only works to a point, and no mechanical limitation devices are currently offered (Arrington’s working on it). The front cam, cam drive, and block are different, so a non-VVT cam and drives won’t fit. Either regrind the stock cam or use an Arrington billet 5.7L cam that works within the phaser’s limitations.
MDS problems (big cams): Cams over 218/220 degrees at 0.050 aren’t happy with MDS. Disable it via reprogramming (DC and Arrington offer these services). Half the lifters are different; replace with standard 6.1L lifters.
Pistons fail (any power level): Detonation from excessive boost, an overly aggressive tune, and/or bad gas breaks the tops off the stock hypereutectic pistons, usually on the intake side. 20 to 21 degrees of lead is pushing things under high load, WOT, cautions Modern Muscle’s Dave Weber. Replace with a high-quality aftermarket forged piston.
Con rods break (600-650 hp): Replace the stock powdered-metal rods with high-quality aftermarket forged rods.
Crank bends (650 hp): The 5.7’s cast-iron crank may bend at this level. Replace with the 6.1’s forged crank or aftermarket equivalent.
Main caps fracture (800 to 900 hp): ARP main studs help the stock powdered-metal main caps live to a point, but the best answer is replacement Arrington Performance (or equivalent) billet caps.
Main and rod bearing wear (racing): DC Performance reports problems with the stock 5.7 bimetal bearings under extreme race use. Replace with trimetal bearings.
Valvetrain issues: 5.7L valves are heavy, and should be replaced on rebuild. The 5.7 needs a spring upgrade with any real cam change, Weber says. When replacing a cam, the seals get torn up; always install new ones.


Read more: http://www.hotrod.com/techarticles/...008_to_2011_dodges/viewall.html#ixzz2DYBXjybA