SBF 351W Cast Steel Crank - 3.500 Stroke

The SBF 351W Cast Steel Crank with 3.500 stroke is a core rotating assembly component engineered for Ford 351W small-block engine builds seeking reliable bottom-end performance. This crankshaft is the foundation of any high-revving stroker or performance motor, controlling piston travel and determining engine displacement when paired with matching rod and piston combinations. Built by SCAT Enterprises—a name synonymous with quality rotating components—this cast steel unit delivers the durability and precision required for street, bracket racing, and mild forced-induction applications.

Cast steel construction provides an excellent balance between cost-effectiveness and strength, making it ideal for naturally aspirated and moderately boosted engines that don't require the extreme expense of a forged unit. The 3.500 stroke measurement lengthens the piston dwell in the cylinder, increasing displacement and torque production compared to factory 2.750 or 3.000 stroke cranks. Weighing 58.3 lbs, this crank maintains manageable rotating mass while offering robust journal diameters and counterweight design to handle increased cylinder pressures and higher RPM loads typical of modified 351W platforms.

Mechanics and engine builders favor this stroker crank when assembling 408–427 cubic inch combinations from the 351W block, a popular choice in hot rod, truck, and performance boat applications. Compatibility requires matching 5.933-inch rod lengths (as indicated by the MPN designation) and proper balancing during final assembly to ensure smooth operation and minimal vibration at elevated RPMs. Installation demands precision boring, line honing, and professional assembly to achieve proper bearing clearances and alignment—making this component ideal for shops equipped to handle rotating assembly work or experienced DIY builders with access to machine shop services.