Project Groundhog, Part 2: Buttoning things up with the installation of heads, valvetrain, and intake on our rescued 2005-era Chevy LS truck engine. When we left Project Groundhog at the end ofPART 1, ...
Now that the LS has burrowed deeply into just about every facet of Chevrolet performance, making power means spinning wrenches and swapping parts. That's where the power theory runs right into ...
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