BBM 4340 Forged Crank - 3.750 Stroke

The BBM 4340 Forged Crank with 3.750 Stroke is a heavy-duty crankshaft designed for serious engine builders and performance enthusiasts looking to enhance their builds beyond stock capabilities. This component is essential for any stroker or modified engine package, converting reciprocating piston motion into rotational power while managing elevated cylinder pressures from forced induction and high-performance fuel.

Constructed from premium 4340 forged steel, the BBM 4340 Forged Crank provides an excellent strength-to-weight ratio and fatigue resistance compared to cast alternatives. This is crucial for handling peak cylinder pressures and rotational stresses in modified engines. The 3.750-inch stroke dimension is significant for determining engine displacement, making it a popular choice for mid-displacement stroker packages that deliver impressive torque characteristics.

This crankshaft is ideal for builders aiming for high-horsepower street engines, race-ready power plants, or custom vehicle platforms. The precision forging process ensures consistent metallurgy, with properly sized journals and pin positions compatible with OEM and performance bearings. The crank's weight of 75.1 lbs reflects the robust material density needed for high-output applications.