The VR6 block in stock form is a great starting point to produce high RPM horsepower.
First off the block is made of cast iron. On the underside it has 7 main bearing caps. The 7 main bearing caps house a very sturdy crankshaft. Because the VR6 is neither a V6 or a inline 6 cylinder engine, it has a very small footprint and overall size is nearly identical to a inline 4 cylinder engine. Spinning at the bottom is a short forged crankshaft. The crankshaft measures a little over a foot and half. These factory crankshafts found in the 2.8 liter VR6 and 3.2 liter VR6 are both forged steel units.