USA RWD /// platform file
Dodge Challenger / Charger Scat Pack build guide
392 HEMI · 6.4 NA V8. What the stock hardware reliably supports, where it breaks first, and the fastest safe path to more.
The Dodge Challenger / Charger Scat Pack makes 485 hp stock at roughly 4,300 lb (8.9 lb/hp). Its stock internals are good for about 650 hp, the fuel system for around 560 hp, and its naturally aspirated setup tops out around 550 hp without forced induction. Below is the limit sheet carbuildcheck analyzes against, plus the platform's documented weak points.
01 Factory card
Stock power485 hp
Curb weight4,300 lb · 8.9 lb/hp
LayoutRWD
InductionNaturally aspirated
02 What stock parts support
Engine internals~650 hp
Fuel system~560 hp
Induction ceiling~550 hp
Clutch (manual)~500 hp
Transmission (auto/DCT)~600 hp
Cooling (sustained)~550 hp
Community-documented crank-hp planning figures, conservative by design. How these are used in the score →
03 Where it breaks first
The Hellcat parts bin bolts straight on: brakes, suspension and cooling upgrades are a cheat code.
Boosted 392s want fuel system and tune quality before pulley size. The bottom end is stout on sane boost.
Driveshaft and diff bushings before sticky tires. Launch shock finds the rubber first.
04 The typical path
Intake → headers → tune → cams or forced induction. NA gains are honest but small; the big unlock is boost, and boost starts at the fuel system.
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