Dodge 6.2L SRT V-8 Engine

The Dodge 6.2L SRT V-8 Engine was introduced by Dodge (via SRT/Street & Racing Technology) in 2015. Built in the Saltillo engine plant in Mexico, it powers high-performance models including the Challenger and Charger SRT Hellcat, Challenger SRT Demon, and Durango SRT Hellcat

Key specs:

• Displacement: ~376.3 cubic inches (6.2 L)

• Construction: Cast‑iron block with aluminum 356 cylinder heads, 4‑bolt main caps, forged crank, rods & pistons Bore / Stroke: 103.9 mm bore, 90.9 mm stroke

• Compression ratio: 9.5:1

• Valvetrain: Overhead valve pushrod, two valves per cylinder, 16‑valve total

 Variants: Hellcat, Redeye & Demon Versions

Hellcat (SRT Hellcrate 6.2 L) Dodge 6.2L SRT V-8 Engine

• Output: ~707 hp and ~650 lb‑ft torque (11.6 psi boost via 2.4 L supercharger)

• Redline: ~6,200 RPM

• Fuel: premium 91 octane

• Available as a turnkey crate engine from Mopar and dealers under part number 68303089AC, typically priced around $16,800–$17,900 MSRP (with occasional discounts reducing to ~$16,500) .

Redeye / Super Stock / Demon (Hellcrate Redeye)

• Output: ~807 hp and ~717 lb‑ft torque on 91 octane; up to ~840 hp and ~770 lb‑ft with 100‑octane fuel and red key remap .

• Upgrades: 2.7 L twin‑screw supercharger (14.5 psi), upgraded cam, pistons, rods, crank, higher rev limit (~6,500 RPM) .

• Price: as factory crate (part 68303091AC) around $26,020 .

 What You Get in a Crate Engine Dodge 6.2L SRT V-8 Engine

Both engines are sold as full crate engine assemblies, often including:

• Block, heads, crank/reacting components,

• Water pump, intake manifold with throttle body,

• Fuel injectors, coil packs,

• Front‑sump oil pan (typical) and necessary accessories

Hellcrate Redeye often includes engine controller—but requires purchase of an installation kit in the same invoice to maintain the full 3‑year / 100,000‑mile transferable Mopar powertrain warranty. Without proper kit, warranty drops to 90 days/parts‑exchange only .

 Prices and Variants Summary

You’re essentially paying a ~50–60% premium to move from standard Hellcat output to the Redeye/Demon spec—but gain nearly 100+ hp and major internal upgrades.

Fitment & Application

• These crate engines are not direct bolt‑in replacements for every vehicle. They’re intended for:

  1. Vehicles pre‑1976 (as replacement or restomod), or

  2. Track/competition vehicles Modern vehicles (post‑1976) may require custom wiring, mounts, ECU, cooling and emissions equipment depending on road legality .

• VIN number is typically collected during ordering to verify eligibility and shipping requirements, especially from Mopar authorized resellers

• Emissions disclaimers: On-road use of these crate engines in newer vehicles may violate emissions laws in U.S. states like California or Canada

Performance Legacy & Cultural Impact

• The Hellcat engine brought production Dodge 6.2L SRT V-8 Engine power into mainstream: 707 hp made it the most powerful production American V‑8 in 2015

• The Challenger SRT Demon (2018) used a tweaked version achieving up to 840 hp with 100‑octane fuel and specialized launch systems like transbrake and torque reserve—set drag strip records, reaching 0‑60 mph in ~2.3 s, quarter‑mile in ~9.6 s @ 140 mph

• Enthusiasts continue to celebrate and swap these engines into non‑factory vehicles, from AMC Eagles to Mopar classics and custom builds

 Buying Tips & Considerations Dodge 6.2L SRT V-8 Engine

 Licensing & Warranty

• Buy from authorized Mopar sources or established performance parts dealers to ensure legitimate product and warranty support.

• When purchasing a Redeye crate engine, bundle the required installation kit on the same invoice to keep the 3‑year/100k‑mile warranty active.

 Fuel & Tuning

• Performance figures depend on fuel quality:

  • 91 Octane delivers standard advertised power (707 for Hellcat; 807 for Redeye).

  • 100+ Octane unlocks 840 hp with proper ECU calibration (Redeye / Demon variant)

 Vehicle Compatibility & Installation

• Expect significant modifications: custom ECU/plumbing, mounts, wiring harness, fuel delivery, cooling.

• Emissions compliance should be verified; many crate engines are exempt for off‑road/track use only.

 Shipping & Cost Of Dodge 6.2L SRT V-8 Engine

• Crates weigh ~500–700 lbs and cost ~$16,000–26,000 USD depending on version.

• Installation labor, wiring kits, ECU, mounts, exhaust, and supporting mods may double total project cost.

Final Thoughts

If you’re shopping for a Dodge 6.2L SRT V-8 Engine to power a modern Hellcat build or a restomod project:

• The Hellcat crate engine (~707 hp) offers raw power and Mopar support for around $17K.

• Stepping up to the Redeye/Demon Hellcrate delivers ~807–840 hp at ~$26K but requires higher fuel and comprehensive installation support.

Both options deliver iconic performance, with deep connections to muscle‑car culture— powering some of the most legendary street‑legal cars of the past decade. The Demon legacy alone includes world‑beating drag records and a cultural status among enthusiasts and artists alike

 If You’re Ready to Buy: Dodge 6.2L SRT V-8 Engine

• Confirm part numbers:

  • 68303089AC for the 707‑hp Hellcat crate engine

  • 68303091AC for the 807/840‑hp Redeye/Demon crate engine

• Purchase from reputable Mopar resellers to ensure eligibility for warranty and documentation requirements.

• Include VIN, installation kit, and understand your local emissions/exhaust regulations before proceeding.