Roush 402R Cobra Deck Dart Engine

Roush 402R Engine

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ROUSH 402R DECK DART ENGINE

402R – This is the wild version of the 402. ROUSH engineers have stuffed in a more aggressive cam shaft and single plane intake. It’s combination of internally balanced forged rotating assembly (crank, rods, and pistons) and the magic of a 4-inch stroke, delivers smooth power from idle to red line.

Technical Specs

Engine Model: 402R

Horsepower (Maximum): 515 hp (with Victor Jr. Intake & 8 qt. Oil Pan)

Torque (Maximum): 500 ft.-lbs.

Displacement: 402 cu.in.

Block: Dart Iron Eagle 4-Bolt Main Sportsman, 9.5” Deck

Crankshaft Type: Forged 4340 Steel (Internally Balanced)

Bore and Stroke: 4.00” x 4.00”

Connecting Rod Type: Forged 4340 Steel “H-Beam”

Compression Ratio: 10.0:1

Pistons: Wiseco Forged w/ Plasma Moly Rings & Lightweight Pins

Timing Chain: Double Roller

Camshaft Info: Roush Proprietary

Lifter Type: Hydraulic Roller

Cylinder Heads: Aluminum

Intake Runner Volume: 185 cc, Fully CNC Ported

Combustion Chamber Volume: 61 cc

Valve Sizes: 2.02” Intake 1.60” Exhaust

Rocker Arm Ratio: 1.6:1

Spark Plugs: Autolite 3923 (Or Comparable)

Intake Manifold: Single or Dual Plane Available

Fuel System: Holley 770 CFM Carburetor w/ Vacuum Secondaries and Electric Choke

Fuel Requirements: Premium Unleaded (Minimum)

Max. Recommended RPM: 6,250

Firing Order: 1-3-7-2-6-5-4-8

Timing: 29 to 33 Degrees @ 4,000 rpm (Not to Exceed 33)

Oil Pump: Melling High Output - Adjustable

Oil Pan: Powder Coated 8 qt. Front Sump - Baffled or Dual-Sump (Mustang) Available *Horsepower Output Can Be Reduced When Engine is Equipped with the Dual-Sump Pan

Oil Filter: Motorcraft FL1-HP (Or Comparable)

Oil Weight: 10w30 - Non Synthetic for First 3,000 Miles

Flywheel: Steel, 157 Tooth, (Balanced to 0 oz.)

Starter: Powermaster Super High Torque (1.6kw)(Or Equivalent)

Roush 402R Engine

ROUSH 402R DECK DART ENGINE

Technical Specs

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