In addition, the pressed - steel
stock oil sump is replaced with a large cast - aluminum sump, complete with cooling fins.
And while the cylinder heads, intake system and dry -
sump oiling system are
stock LS7 components, the engine — which has larger bore and stroke dimensions than the 7.0 L (427 - cubic - inch) LS7 — uses a one - off reciprocating assembly, including a forged steel crankshaft, forged rods and forged pistons.