
Ford FE 390 Series 9000 Cast Street/Strip Rotating Assembly 431ci
- Ford FE 390 Series 9000 Cast Street/Strip Rotating Assembly
- 431ci
- 4.080'' Bore
- Forged Flat Top Piston
- 11.0:1 w/72cc; 10.7:1 w/76cc
- 4.125'' Crank Stroke
- 6.700'' Rod Length
- Unbalanced Assembly
This Unbalanced Complete Assembly Includes: - Crankshaft
- Connecting Rods with ARP 7/16' 8740 Bolts
- Piston and Piston Rings
- Main & Rod Bearings
- Unbalanced 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.





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