GMHTP Takes A Closer Look At The New FAST LSXR Intake Manifold & RHS LS Race Block

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GM High Tech Performance Magazine Gets Up Close With Two New Ground Breaking LS Performance Products

With the GM LS7 and all other aftermarket blocks (including competing options such as resleeved factory blocks) set as the benchmarks for improvement, RHS engineers successfully designed a block strong enough to support 2,500 hp (given a skilled builder who incorporates plenty of other high-quality components in the engine, of course). That's a whole heck of a lot for an aluminum block, and it all starts with the company's selection of an A357-T6 aluminum alloy that gets subjected to a unique solidification and cooling process, including chilling of the main bearing bulkheads for added strength. After casting is complete, the block is CNC-machined, and here the same CAD tactic of "dynamic sectioning" that ensured adequate wall thickness during design of the block also helps achieve maximum precision during machining.

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