When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Actually it's pretty easy to make 600-700 HP (normally aspirated) with an LSX on pump gas, it's just dang expensive, Heads, Cam, Springs, Injectors, Intake, Exhaust, Tune, etc.