Simply installing a set of Mast’s new 12-degree LS3 cylinder head castings along with a granny-certified 225/231-at-0.050 hydraulic cam netted a gain of 99 hp.

We tap into the potential of the LS3 engine by testing out West Coast Cylinder Heads on a 2009 Chevrolet Corvette C6. We get a 36 hp and 30 lb-ft gain from this cylinder head swap. Only at www ...

We continue upgrading our GM Performance Parts LS3 crate motor here in Part 3 of the engine build, where we install Procomp LS3 cylinder heads, Yella Terra 1.7 ratio roller rockers, Comp Cams ...

Since our last Ultimate LS Cylinder Head Test was such a success, we decided to up the ante a little bit and test a few LS3/L92 rectangle-port cylinder heads on a 468ci enigne. Only at www.hotrod ...