The 427R is a Race Only 351 based engine that produces 800-875hp at 7600-7800 RPM and 600+ ft/lb at 5800 RPM. This engine comes standard with a 4.125″ bore and a 4.00 stroke(427cid) . Upgraded version to 4.10 stroke with 4.155 bore (445cid), and 4.25 stroke with 4.155 bore(461cid). Compression ratios depend on your application but generally range from 13:1 to 14.5:1. With proper tuning we suggest a boost limit of 20 psi and a 275hp limit on nitrous. If you are wanting more boost or nitrous horsepower please ask about crank and rod upgrade. Also see our 400U and 430U engines. These engines in a 3000lb car typically run high 5 second ET on motor and 5.15-5.30 on a 275hp nitrous shot. Pictured with optional equipment
Parts
| • Dart 9.50 Deck Block Pro Machined | • Felpro MLS or Cometic Head Gaskets |
| • Scat 4340 4.00 Steel Crankshaft-Internal Balanced | • Bennett Spec Solid Roller Lifters |
| • Scat 4340 6.20/6.25 H Beam Connecting Rods | • 1pc HD 3/8 Moly Pushrods |
| • Custom Bennett Diamond Pistons | • Bennett Spec Roller Rockers |
| • Calico Coated Clevite Bearings | • Bennett Polished Valvecovers w/ Oil Fill Cap & Breathers |
| • Bennett Custom Grind Solid Roller Camshaft | • Canton or Moroso Oil Pan Kit |
| • Billet Timing Chain & Cam Degreed | • Melling HD Oil Pump |
| • Bennett TFS 265 Hi Port CNC Ported Cylinder Heads | • ATI Balancer |
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• 2.125 X 1.600 Valves |
• Edelbrock 2828 or CHI Intake |
| • Break In Oil & Dyno Tested and Tuned | |
| • MSD Distributor & Plug Wires | |
| • EFI Version includes FAST EFI System, Injectors,and Throttle Body |
Additional options for this engines package
| • EFI | • Vacuum pump kit |
| • Blackout | • Motor plate |
| • Custom polishing or powder coating of parts | • Jesel shaft mount rockers |
| • Billet bracket kits for ps, a/c, and alternator | • Individual runner-8 throttle body efi intake |
| • Nitrous systems |