Here’s an easy, budget-minded LS engine upgrade that will net you a good amount of horsepower for minimal effort and money.

Once they are in hand, we can install and adjust the rocker arms to Jesel and Lunati specifications, completing our valvetrain installation.The basic rocker adjustment procedure for each of the ...

High mileage? New high-lift cam? On the rev limiter? All of these fun things can destroy your rocker arms. Find out how to safe them.

GM LS engines come with roller fulcrum rocker arms from the factory, with finger follower-type tips that actuate the intake and exhaust valves via pushrod and camshaft.