Surefire Engine DFF4 - Read Reviews on Surefire #DFF4

Surefire Engine

Vehicle Specific

Part Number: DFF4
Features & Benefits

Your remanufactured engine is tested in several specific ways after being assembled: multiple pressure tests – each component is carefully checked after being cleaned to see if cracks or other defects exist in the casting. After being assembled, we pressurize the water jacket with 30 lbs. of air pressure. As a result of these tests, you can be sure your unit will not have coolant leaks. "SIM” test – after pressure testing, our final check of engine performance is a spin test. We turn the engine at 400 RPM with oil pressure lines attached. The test measures compression on each cylinder, oil pressure, oil flow and allows an easy visual check that oil is reaching all critical areas. This test also allows the rear main seal to be checked for leaks. We produce most engines as long block assemblies that ship with a finishing gasket set and a new oil pump. We also produce many of the most popular engines as dressed alternatives. These engines save installer’s time and money as they come complete with oil pan and/or front cover and in some cases valve covers already installed.

  • Sim tested for compression, leaks, noises & oil pressure
  • Engines come with installation gasket sets and oil pumps unless otherwise noted
  • Long blocks securely packaged for safe delivery and easy core return from nationwide warehouses for fast delivery
  • Every engine that we remanufacture is reverse engineered to ensure that any original factory defects are removed
Product Details
Part Number: DFF4
Weight: 600.00lbs
Air Cleaner Included: No
Bearing Cap Bolt Count: 4
Camshaft Configuration: OHV
Camshaft Lifter Style: Hydraulic
Camshaft Pre-Timed: Yes
Connecting Rod Material: Iron
Crankshaft Material: Cast Iron or Steel
Crankshaft Stroke (in): 4.18
Cylinder Head Material: Iron
Cylinder Head Valve Springs Per Valve: Dual
EFI Computer Included: No
Engine Balance Style: External
Engine Block Cylinder Bore (in): 4.0
Engine Block Material: Iron
Engine Cubic Inch Displacement (ci): 420
Engine Net Weight (lbs): 600.0
Engine Oil Dipstick Location: Passenger Side
Engine Oil Sump Style: Wet
Exhaust Manifold Included: No
Flexplate Included: No
Flywheel Included: No
Fuel Injection Style: Unit Direct Injection
Fuel Injectors Included: No
Fuel Rail Included: No
Glow Plugs Included: No
Harmonic Balancer Included: No
Hydraulic or Solid Camshaft: Hydraulic
Intake Manifold Included: No
Piston Material: Aluminum
Piston Wrist Pin Style: Full-Floating
Main Seal Material: Piton
Main Seal Style: One Piece
Timing Belt Included: Not Required
Timing Chain Included: Not Required
Timing Cover Included: No
Valves Per Cylinder: 2
Water Pump Included: No
Wiring Harness Included: No
Wrist Pin Material: Steel
Shipping Information: Overweight/Oversized Item. May require special shipping and handling. Available only to continental US addresses.
Product Service Bulletin:
  • Overall

    Surefire Engine

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