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What Is A Flat-Plane Crank?

This is a discussion on What Is A Flat-Plane Crank? within the General Help forums, part of the LSx Technical Help Section category; In the world of 90-degree V8s, there are two basic crankshaft designs. More......

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    Blown, Stroked, & Sprayed

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    Exclamation What Is A Flat-Plane Crank?

    In the world of 90-degree V8s, there are two basic crankshaft designs.



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    Former Mopar Man 2002ssslp's Avatar
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    It look like they changed the geometry of the crank journals to fire in pairs instead of scattered one at a time. example. Take one side of the block and instead of one piston hitting TDC you have the inner two or the outer two hitting TDC at the same time. Same with the other side of the block.
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