Commonly referred to as 350. The item lsx fabricated aluminum 7-quart front sump oil pan ls1 ls2 ls3 ls6 is in sale since Tuesday, September 22, 2015. CHEVROLET SMALL BLOCK V8 GEN. 5.7 L / 346 in. LSX Fabricated Aluminum 7-Quart Front Sump Oil Pan LS1 LS2 LS3 LS6.