Despite, having replaced the stock heads and cam on the LS3, we decided there was time for one more test. The reason CNC-ported LS3 heads are so popular is their price.

We dyno test a 6-liter LY6 LS engine with three stock-style cylinder heads from EngineQuest and a camshaft from Comp Cams.

Moving the cam sensor on a Gen 1 LS engine to the front timing cover is easy if you have the right parts and we show you how.