Callie’s VR38 Stroker Crankshaft

This crankshaft features a 94.4mm stroke. When combined with standard or over-sized pistons, this allows for a significant increase in engine displacement (typically 4.1L to 4.3L) for improved torque and spool.

The switch to Big Block Chevy (BBC) rod journals provides a larger bearing surface area. This significantly increases load capacity and durability, which is essential for builds pushing extreme horsepower.

The extended post provides additional surface area for harmonic damper engagement. This design improvement addresses a common failure point on standard VR38 cranks where the pulley can shear off under high load.

Yes. Because it uses BBC rod journals rather than standard Nissan journals, you must use connecting rods specifically designed with BBC big ends to match this crankshaft.

Absolutely. Callies is renowned for manufacturing high-strength competition components. The GT1R spec ensures it is balanced and hardened to withstand the rigors of high-RPM, high-boost racing.