LSA

I’m asking this for a friend and I know you will have suggestions. He’s building a ’71 El Camino and has decided on an LS swap. He wants 650-700 hp with an automatic. The LS9 is 635hp to start but no auto is recommended. As a crate engine, the LS9 would cost about $21,000 plus

[Editor’s Note: This LSA engine upgrade guide is part of a series of LS engine upgrade guides assembled by a team of LS experts at Summit Racing that we are sharing at OnAllCylinders. For a primer on the entire LS engine universe, read LS Engines 101: An Introductory Overview of the Gen III/IV LS Engine Family.] … Intro

Mechanically similar, General Motors’ LS and LS-based Vortec engines wound up on almost every branch of the GM family tree: Chevy, Pontiac, GMC, Cadillac, Buick—heck, even Saab, Hummer, and Isuzu got some LS love. Since LS and Vortec engines are so common, they’ve become the go-to performance and swap engines of the modern era. These motors are