USA RWD /// platform file
Ford Mustang GT (S550) build guide
Coyote · 5.0 NA V8. What the stock hardware reliably supports, where it breaks first, and the fastest safe path to more.
The Ford Mustang GT (S550) makes 460 hp stock at roughly 3,700 lb (8 lb/hp). Its stock internals are good for about 750 hp, the fuel system for around 600 hp, and its naturally aspirated setup tops out around 520 hp without forced induction. Below is the limit sheet carbuildcheck analyzes against, plus the platform's documented weak points.
01 Factory card
Stock power460 hp
Curb weight3,700 lb · 8 lb/hp
LayoutRWD
InductionNaturally aspirated
02 What stock parts support
Engine internals~750 hp
Fuel system~600 hp
Induction ceiling~520 hp
Clutch (manual)~500 hp
Transmission (auto/DCT)~550 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
Oil pump gears and crank sprocket before big spins — cheap insurance against a known failure.
MT82 shifts poorly when hot. Better fluid and a bracing kit help; big power eventually wants a stronger box.
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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