Roush 342R Cobra Engine | Deck Sportsman Engine

Roush 342SR Engine

Home Engines Roush Engines Roush 342R Engine

342R – When space in the engine compartment is limited but maximum performance is desired the 342R is the answer.

Engine Model: 342R

Horsepower (Maximum): 450 HP est.

Torque (Maximum): 420 ft.-lbs.

Displacement: 42 cu. in.

Block: Dart Iron Eagle 4-Bolt Main Sportsman, 8.2” Deck

Crankshaft Type: Forged 4340 Steel (Internally Balanced)

Bore and Stroke: 4.00” x 3.40”

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

Water Pump: Reverse-Rotation is Standard, Standard Rotation is Available

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: Edelbrock Victor Jr

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: 31 to 34 Degrees @4,000 rpm (Not to Exceed 35)

Oil Pump: High Output - Adjustable

Oil Pan: 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 (Or Comparable)

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

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

Starter: Ford Motorsports Super High Torque (1.6kw)(Or Equivalent)