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Tag Archives: Pro Action

Chevy High Performance – LQ = HP

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In the February 2012 issue, the Chevy High Performance staff drops a 6.0L LQ9 GM Gen III truck engine, originally found in a variety of mid 2000s General Motors trucks and SUVs, into a ’66 Chevelle. The engine package features an XR281HR camshaft from COMP Cams, along with RHS Pro Action Cylinder Heads with Clean Cast Technology™ and a 168-tooth internal ... Read More »

GM High-Tech Performance – Clean Cast And Fast

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In the January 2012 issue, the team at GM High-Tech Performance bolts a set of aluminum RHS Pro Action™ Cylinder Heads featuring Clean Cast Technology™ to an LS1 engine in an attempt to create true budget performance. The package is finished off with a custom grind hydraulic roller cam, along with a set of pushrods a new adjustable timing set, ... Read More »