USA RWD /// platform file
Dodge Challenger / Charger Hellcat (2015–2018) build guide
6.2 supercharged HEMI V8. What the stock hardware is estimated to support, where it breaks first, and the honest path to more.
Same family, other generations and variants: Challenger / Charger Scat Pack (392)
The Dodge Challenger / Charger Hellcat (2015–2018) is rated 707 hp (SAE net, J1349-rated (FCA sheets print the word estimated) · US market) at 6,000 (MY2015 sheet; the MY2017 sheet prints 6,200) rpm and weighs 4,449 lb (US curb, estimated, Challenger SRT Hellcat manual, MY2015 sheet (automatic 4,439 lb); the MY2017 sheet prints 2,018 kg manual / 2,021 kg automatic), or 6.3 lb/hp. On enthusiast estimates its stock internals are taken to about ~900–1,000 hp, the fuel system to around ~800–1,000 hp, and the stock supercharger is taken to about ~820 hp. Below: the sourced spec sheet, the limit sheet carbuildcheck analyzes against, and the platform's community-documented weak points.
Units
01 Spec sheet sourced
Engine6.2 supercharged HEMI V8 · 6,166 cc · V8
Bore × stroke103.9 × 90.9 mm
Compression9.5:1
Induction2.4 L twin-screw supercharger, 11.6 psi
Fuel systemport (sequential multiport)
Rated power707 hp · SAE net, J1349-rated (FCA sheets print the word estimated) · US market @ 6,000 (MY2015 sheet; the MY2017 sheet prints 6,200) rpm
Torque650 lb-ft @ 4,000 (MY2015 sheet; MY2017 sheet 4,800) rpm
Redline6,200 rpm
Stock boost0.80 bar (11.6 psi), gauge
TransmissionTremec TR-6060 6MT · TorqueFlite 8HP90
DrivetrainRWD
Curb weight4,449 lb · US curb, estimated, Challenger SRT Hellcat manual, MY2015 sheet (automatic 4,439 lb); the MY2017 sheet prints 2,018 kg manual / 2,021 kg automatic · 6.3 lb/hp
GenerationLA Challenger / LD Charger; 2019+ rated 717 hp, Redeye 797 hp (2.7 L blower, 14.5 psi) · 2015–2018 (707 hp); introduced 2014 as a 2015 model · pre-facelift (before the refresh, Dodge’s term for the facelift)
Verified againstFCA US, 2015 Dodge Challenger SRT specifications (PDF) (primary, read 2026-09-06); FCA US, Dodge Challenger SRT Hellcat: 707 horsepower (press release, 1 July 2014) (primary, read 2026-09-06); FCA US, 2019 Challenger SRT Hellcat Redeye release (blower and boost comparison) (primary, read 2026-09-06); FCA US, 2017 Dodge Challenger / Challenger SRT specifications (PDF) (primary, read 2026-09-06); SAE Mobility Engineering, Chrysler's new Hellcat V8 gets 707-hp SAE rating (secondary, read 2026-09-06) · The mass rests on one document.
02 What stock parts support enthusiast estimates
Engine internals~900–1,000 hp
rotating assembly ceiling · fails first: forged internals; driveline and traction go first · 93 AKI · source: Magnuson Superchargers, TVS2650 Hellcat kit · Magnuson rates its blower over 1,000 hp on the stock engine (t1); the site plans on ~900 hp
Induction ceiling~820 hp
stock turbo / supercharger ceiling · fails first: 2.4 L blower out of efficiency with a smaller pulley · 93 AKI · no named source: site planning estimate · site planning figure ~820 hp; no named pulley-ceiling source in this audit
Fuel system~800–1,000 hp
stock fuel-system ceiling · fails first: stock fuel system past ~1,000 hp per Magnuson (t1) · 93 AKI · source: Magnuson Superchargers, TVS2650 Hellcat kit · the site plans on ~800 hp, conservative against a vendor claim
Clutch (manual)~650 hp
stock clutch torque capacity · fails first: twin-disc clutch slip on launch · no named source: site planning estimate · site planning figure; no named source in this audit
Transmission (automatic)~850 hp
gearbox / driveline rating · fails first: 8HP90 is rated for the stock torque with margin; driveshaft and half-shafts first · no named source: site planning estimate · site planning figure; no named source in this audit
Cooling (sustained)~750 hp
thermal ceiling for sustained load · fails first: charge-air heat soak on repeated pulls · no named source: site planning estimate · site planning figure; no named source in this audit
Tuning limitsenthusiast estimates, crank hp on the stated fuel; sources: Magnuson Superchargers, TVS2650 Hellcat kit; method: the analyzer plans on the lower bound of each range
Planning figures, conservative by design, never a manufacturer claim. How these are used in the score →
03 Where it breaks first community-documented
Traction is the entire project. Before any power mod, the Hellcat's money goes to tires, suspension and seat time.
Consistent 10-second passes want a driveshaft and half-shaft plan (community consensus); the driveline sees launch shock before the engine sees strain.
04 The typical path
Tune → pulley → fueling. Blower cars scale fast; heat and fuel are the guardrails.
Analyze your Challenger / Charger Hellcat (2015–2018) build
Tap your mods, set a goal. Score, weak link, roadmap. Free, no login.
Check this build →
buying used? check the history first — the link gets you 20% off
↗Partner link
↗Partner linkPartner link: may earn carbuildcheck a commission at no extra cost to you. The stock limits, weak points and upgrade path on this page are documented independently and never influenced.
power outgrows the stock wheel and tire package firstWheelHero ↗Partner linkUS
Partner link: may earn carbuildcheck a commission at no extra cost to you. Fitment is per-platform, so check bolt pattern, center bore, offset and tire size against your own car before ordering anything, and note this retailer ships within the US. The stock limits, weak points and upgrade path on this page are documented independently.
05 Related platform files