Spool Holden / GM - LS V8 Forged 4340 4" Stroker Crank

Unlock the full potential of your LS V8 engine with the Spool Holden / GM LS V8 Forged 4340 4" Stroker Crank. Designed for performance enthusiasts, this high-quality crankshaft offers significant enhancements in torque and power, making it an essential upgrade for your vehicle.

Experience the benefits of increased cubic capacity, which allows for substantial gains in low to mid-range power. The 4-inch stroker crank ensures that boost comes on earlier in the rev range, delivering a noticeable increase in peak power.

• Forged from premium 4340 steel for superior strength and durability
• 4-inch stroke for enhanced engine performance
• Ideal for high-performance applications
• Boosts torque and power output significantly
• Note: Crank does not come with reluctor

Upgrade your engine with the Spool LS V8 4" Stroker Crankshaft and feel the difference in performance and power.

Try our new LS Piston Finder to help select the right piston. Click here

Available options

• Reluctor Wheel Option: No Reluctor wheel; Genuine GM LS 24 tooth Reluctor Wheel; Genuine GM LS 58 tooth Reluctor Wheel

Engine build fitment

GM / LS|LS 5.7L and 6.0L V8. Match the selected dimensions, engine generation and rotating assembly specification before machining or assembly.

Installation and BBT workshop support

Measure journal and thrust clearances, check block clearance and balance the complete rotating assembly. Confirm the damper, crank trigger and flywheel arrangement with your engine builder.

Built by Boost & Tune is an authorised Spool Imports dealer and can assist with component selection, engine assembly and tuning requirements for your build.