Dodge Mopar SRT8 6.1L Hemi V8 Engine Auto Transmission Liftout Swap

Specifications of the 6.1 L HEMI V8

Here are the main details for the 6.1 L HEMI (Gen III) engine used in SRT8 models:

• Displacement: 6.1 liters (6059 cc) Amazon Web Services, Inc.+1

• Bore × Stroke: about 103.0 mm × 90.9 mm (≈4.06″ × 3.58″) Porsche Cars History+1

• Compression ratio: ~10.3 :1 HOT ROD+1

• Power output (factory): approx ~425 hp and ~420 lb-ft torque for many SRT8 variants. HOT ROD+1

• Engine architecture: cast-iron block, aluminum heads, pushrod (OHV) design, hemispherical combustion chambers. Amazon Web Services, Inc.+1

• Fuel requirement: premium unleaded, high performance. Dezo’s Manuals

Transmission: When paired in many of these SRT8 models, the automatic transmission used was the Mercedes-derived W5A580 (also called NAG1) 5-speed automatic.