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 ...

The LSA engine shares many similarities with GM's LS3, but it was designed from top to bottom with quiet performance in mind.

Underneath its classic exterior, the Chevelle sits on an Art Morrison GT Sport chassis. Power comes from a 6.2-liter supercharged LSA V8 producing a cool 725 horsepower. The bodywork is finished ...