Dodge 6.4L Hemi (392 Apache) Specs

Dodge 6.4L Hemi (392 Apache) engine specs: 392 ci (6.4L), 8-cylinder, 4.0906" bore x 3.7244" stroke, 10.9:1 compression.

Dimensions

Displacement	392 ci / 6.4 L
Bore	4.0906"
Stroke	3.7244"
Cylinders	8
Compression ratio	10.9:1
Bore/stroke ratio	1.098

Construction

Block material	cast iron
Head material	aluminum
Valvetrain	OHV
Fuel type	gas
Advertised HP	470 hp

What these numbers mean

Bore/stroke character	1.098 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves
Mean piston speed at 6,000 RPM	3,724 ft/min — in the range typical of performance street engines
Displacement per cylinder	49.0 ci
Static compression	10.9:1 — in the range that usually runs on pump premium

Run the numbers for this engine

Each link opens the calculator with this engine's specs already filled in.

• Displacement calculator
• Compression ratio calculator
• Piston ring gap calculator
• Piston speed calculator
• Carburetor CFM calculator

Vehicles (6)

• Dodge Challenger SRT8 392
• Dodge Charger SRT8
• Chrysler 300 SRT8
• Jeep Grand Cherokee SRT
• Dodge Durango SRT
• Ram 2500/3500

Similar engines

• Dodge 6.2L Hemi Supercharged (Hellcat) — 376 ci
• Dodge 6.2L Hemi Supercharged (Demon) — 376 ci
• Dodge 6.2L Hemi Supercharged (Redeye) — 376 ci
• Dodge 6.1L Hemi — 370 ci
• Dodge Gen III Hemi · 3.917" × 3.579" · 10.5:1 — 345 ci
• Dodge Pentastar · 3.780" × 3.268" · 10.2:1 — 219.6 ci
• Chrysler Chrys 2010 392 375HP — 392 ci
• Chrysler Chrysler 392ci · 4.090" × 3.720" · 10.9:1 — 392 ci

← All Gen III Hemi engines