While the LSA is the more powerful engine — producing up to 580 horsepower with the help of a 1.9 liter Eaton supercharger — the LS3 is a notoriously reliable power plant that is easier and ...

So, how much does an LS3 crate engine cost? Currently, GM Performance Motor are selling LS3 crate engines for $9,679 – although don't underestimate the costs of actually fitting and plumbing in ...