Chevrolet has been ... uses an Eaton supercharger. The LT4's block and cylinder head are both cast aluminum, as is the intake manifold. The crankshaft and camshaft are forged and billet steel ...
In the GM engine catalog, the LT4 name has always ... the Gen II variant was a 'hot' version of that generation's LT1 V8, featuring optimized heads, a more aggressive cam, and a higher compression ...