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Late 512 blocks

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03-03-2009, 03:41 AM

LS6 RAT

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Re: Late 512 blocks

When viewing the cylinder case (engine block) from the bottom, if the cylinder bores have large reliefs at the bottom, that engine case (block) was designed for a 454. Those reliefs are for clearance with the quarter inch longer stroke crankshaft used in 454 applications.

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