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In the history of Hot Rods and Muscle Cars, the number 427 brings back plenty of "Magic Memories." Back then, the "Side Oiler" was the king. Today, we have the option to build to this memorable cubic inch and still have all of the benefits of the "Windsor Engine." There are Four variations of the Roush 427 to allow the perfect fit for your project.
427R - This is our thoroughbred and has a single plane intake manifold and a "double pumper" carburetor. Maximum horsepower, maximum fun.
- Engine Model: 427R
- Horsepower (maximum): 550 HP (with victor jr. intake & 8 qt. Oil Pan
- Torque (maximum): 535 Lbs./Ft. (estimated)
- Displacement: 427 Cu. In.
- Block: Dark 4-bolt main, 9.5* Deck
- Crankshaft Type: 4340 Forged Steel (internally Balanced)
- Bore and Stroke: 4.125" x 4.00"
- Connecting Rod Type: 4340 Forged Steel H-Beam
- Compression Ratio: 10.25:1
- Pistons: wiseco Forged w/ Plasma Moly Rings & lightweight pins
- Timing Chain: Double Roller
- Camshaft Info: Roush Proprietary (moderate)
- Lifter Type: Hydraulic Roller
- Cylinder Heads: Aluminum
- Intake Runner Volume: 205 CC, fully CNC ported
- Combustion Chamber Volume: 61 CC
- Valve Sizes: 2.08" Intake 1.60* Exhaust
- Rocker Arm Ratio/Type: 1.6:1
- Spark Plugs: Autolite 3923 (or comparable)
- Intake Manifold: Single or Dual Plane available
- Fuel System: Holley 770 CFM Carburetor w/ mechanical Secondaries (Electric Choke Available)
- Fuel Requirements: Premium Unleaded (minimum)
- Max. Recommended RPM: 6,250
- Firing Order: 1-3-7-2-6-5-4-8
- Oil Pump: High Output - Adjustable
- Timing: 31 to 34 degrees @ 4,000 rpm (not to exceed 35)
- Oil Pan: powder coated 8-quart Front Sump - Baffled or Dual-sump (Mustang) available
- Oil Filter: Motorcraft FL1-HP (or comparable)
- Oil Weight: 10w30 - non synthetic for first 3,00 miles
- Flywheel: Steel 157 tooth (Aluminum Available)
- Starter: Ford Motorsports Super High Torque (1.6Kw) or Equivalent
