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, ...
Back in 2004, GM Performance Parts shipped us a complete LS1 to evaluate. Looking back, we really threw the hammer at this one. We tested every off-the-shelf cam, manifolds and cylinder heads, ...