Ford FE 390 Series 9000 Cast Street/Strip Rotating Assembly 431ci
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SCATPART NUMBER: 942-1-94644BI

Ford FE 390 Series 9000 Cast Street/Strip Rotating Assembly 431ci

$2,19259$2307.99You Save$115.40
ShippingShips on 09/24/2026
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FE 390 Block Main Journals
  • 431 Cubic Inch
  • 4.125'' Crank Stroke
  • 6.700'' Rod Length
  • Pro Comp 4340 Forged I-Beam Connecting Rods
    • Ford FE 390 Series 9000 Cast Street/Strip Rotating Assembly
    • 431ci
    • 4.080'' Bore
    • Forged Dish Piston
    • 9.3:1 w/72cc; 9.0:1 w/76cc
    • 4.125'' Crank Stroke
    • 6.700'' Rod Length
    • Internal Balanced Assembly


      This Balanced Complete Assembly Includes:
    • Crankshaft
    • Connecting Rods with ARP 7/16' 8740 Bolts
    • Piston and Piston Rings
    • Main & Rod Bearings
    • Internal Balanced Assembly DOES NOT Include Flexplate and Harmonic Damper.

    Scat rotating assembly component parts are designed for the ultimate in performance. They take the ''guess work'' out of engine assemblies, just wash, Q.C. and assemble.

    Complete Assembly Includes:

      • Series 9000 Cast Pro Comp Stock Stroke or Stroker Lightweight Crankshaft
      • Pro Comp 4340 Forged I-Beam or Pro Sport 4340 Forged H-Beam Connecting Rods with ARP 8740 7/16'' Cap Bolts
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    • Forged or Premium Forged Pistons with Piston Rings
    • Main and Connecting Rod Bearings
    • Internal Balanced Rotating Assemblies DO NOT Include Flexplate and Harmonic Damper
    • Unbalanced Rotating Assemblies DO NOT Include Flexplate and Harmonic Damper
    • Crank/Rod/Piston Kits DO NOT Include Piston Rings, Main and Connecting Rod Bearings, Flexplate or Harmonic Damper

    When building a powerful FE engine, the bottom end deserves components that can keep up. The Scat Ford FE 390 Block Series 9000 Cast Pro Comp Lightweight Street-Strip Rotating Assembly delivers a purpose-built foundation for serious performance. This kit provides a balanced, integrated rotating assembly engineered to reduce vibration, enhance durability, and simplify build complexity.

    At its core is a lightened, precision-machined crankshaft, optimized for performance while retaining strength under heavy duty. It pairs with forged connecting rods, matched pistons, rings, and bearings—each component balanced and selected to work as a unit. Because the parts come pre-matched and balanced, you avoid tolerance mismatches, risk of component incompatibility, and time-intensive fitting.

    Ideal for street-strip hybrids, this assembly supports higher RPM use while maintaining reliability in daily or occasional duty. Its design helps reduce rotating mass and lowers the inertia that can bog high revs, giving you quicker throttle response and a freer-spinning personality. The use of premium materials and careful quality control ensures that this kit handles stress gracefully—reducing the chance of fatigue or failure under load.

    Whether your build is a mild FE refresh or a full race-trimmed 390, this ford 390 stroker kit serves as a rock-solid base. It supports future upgrades, makes machining simpler, and gives confidence that the rotating internals are up to the task. For those seeking a 390 stroker kit ford option that blends strength, balance, and usability, this Scat assembly is a top contender.

    If you're ready to build your FE to perform at the top end, choose this 390 fe stroker kit and start with a rotating assembly built for longevity, precision, and clean power delivery.

    Part TypeEngine Rotating Assembly Kit
    Product LineScat Ford FE 390 Block Series 9000 Cast Pro Comp Lightweight Street-Strip Rotating Assembly
    BrandSCAT
    Package Height14.0
    Package Width19.0
    Package Length26.0
    Weight102.0 PG
    Part CategoryPerformance Parts
    Crankshaft MaterialCast iron
    Piston And Ring Oversize0.03 in (0.8 mm)
    Main Bearing Undersize (Mm)Stock
    Wrist Pin StyleFloating
    Connecting Rod Beam StyleI-beam
    Rod Bearing Undersize (Mm)Stock
    Piston Ring Facing MaterialPlasmamoly
    Piston StyleDish, with single valve relief
    Assembly Lubricant IncludedNo
    Piston Head Volume (Cc)22
    Gaskets IncludedNo
    Rear Main Seal Style2-piece
    Main Bearing Undersize (In.)Stock
    Crankshaft IncludedYes
    Piston Rings IncludedYes
    Bore (Mm)103.632
    Actual Engine Cid432
    Engine Stroke4.125 in (104.775 mm)
    Connecting Rod MaterialForged 4340 steel
    Pistons IncludedYes
    Rod Bearing Undersize (In.)Stock
    QuantitySold as a kit
    Main Bearings IncludedYes
    Engine BalanceInternal
    Rod Bearings IncludedYes
    Connecting Rods IncludedYes
    Oil Pump IncludedNo
    Camshaft IncludedNo
    Timing Chain And Gears IncludedNo
    BalancedYes
    Piston MaterialForged aluminum
    Cam Bearings IncludedNo
    Part FitmentSemi Universal
    Plastigage IncludedNo
    Lifters IncludedNo
    Bore4.08 in (103.632 mm)
    Vendor Part Number1-94644BI
    Package Qty1
    Package TypeEA
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