Production V8 engines almost always use a two plane crankshaft (four crank throws disposed at 90 degree intervals) which provides good balance but an uneven firing order along each bank. So, with the number one pin straight up, the second pin would be 90 degrees. With a cross-plane crankshaft, the pins are positioned every 90 degrees. 63l8qrrfy6 368 Joined: Wed 7:36 pm.A flat-plane crankshaft is one in which all the crank pins - four in the case of a V8 engine, are aligned in a single (or flat) plane, 180 degrees apart, with two pins up and two pins down. Custom Chevy LS Ferrari V8 (F430) I'll add a few more as I find them. It's a pretty conventional flat-plane crank though. The engine in the 458 Italia, for instance, is a flat-plane crank engine. However, flat-plane production engines are not a new concept, as Ferrari and Lotus have been using them for years. It’s a tenor to the cross-plane V8’s baritone.
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