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mountune High Performance 4.1L V6 Stroker Sleeved F-150 Raptor Short Block

mountune High Performance 4.1L V6 Stroker Sleeved F-150 Raptor Short Block


Regular price $15,999.00
Regular price $15,999.00 Sale price $15,999.00
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Mountune's extensive knowledge of the Ford EcoBoost engines coupled with our comprehensive motorsport experience provides the foundation for our high performance 4.1L Ford EcoBoost short block assembly.

Each short block starts off as a brand new aluminum Ford F-150 Raptor open deck engine block that has been precision machined in house to accept Darton MID Sleeves before being skillfully assembled with mountune forged pistons, forged h-beam connecting rods, tri-metal racing bearings, and a forged steel crankshaft.

The Darton MID Sleeve is a proven method of strengthening open deck engine blocks while maintaining OEM integrity. It prevents cylinder cracking, walking, and bell mouthing and allows for a much larger cylinder bore size.


This engine is the perfect foundation for your F-150 Raptor for high boost applications or as a direct replacement for your tired original engine.

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Installation Guides

Find the important information you need to install this engine into your build, as well as our recommended break-in procedure.

Additional Information:

Engine Specifications

  • Product Code: 6000-SB-400
  • Base Engine: 3.5L Ford Ecoboost
  • Bore x Stroke: Ø 97 mm x 91.44 mm
  • Compression Ratio: 10:1
  • Piston: Upgraded Forged Piston
  • Connecting Rod: Mountune Forged H Beam Rod
  • Crankshaft: Callies Billet Steel Crankshaft
  • Main Bearing: Mountune Race Tri-Metal
  • Main Bolts: OEM High-Tensile Strength
  • Application: F-150 Raptor 2017-2020 and all Gen2 powered trucks

Included Components

  • Ford EcoBoost Gen 2 V6 Engine Block
  • Callies 91.44mm Steel Crankshaft
  • Forged Connecting Rods
  • Forged 97mm Pistons
  • High Performance main and rod bearings
  • Assembly balanced to within .5 gram
  • Complete blueprint assembly
  • Ring gap set
  • Bearing clearance set
  • Deck height checked
  • Connecting Rod side clearance set
  • Crankshaft end float set
  • Rear Main Seal installed
  • MLS Head Gasket Set

Warranty Coverage

Mountune is confident in our products and services and we proudly stand behind our workmanship. Therefore, we offer a limited warranty against defects in workmanship or materials, covering both parts and labor, for a standard period of 1-Year/12,000-Miles.

For more information see, terms & conditions.

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Engines Built To Order

Estimated build time is currently 10-12 weeks

Please note, that there may be circumstances that may delay the build process including (but not limited to) part shortages and backorders beyond our control.


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