Learn how to upgrade the rocker arms on an LS engine; an easy valvetrain upgrade we performed on our 1978 Chevy Camaro Z28 (aka Project ZedSled).

Stock Junkyard LS. Richard Holdener Holdener took a stock, flat-top 5.3-liter LS and put it on an engine dyno to find a baseline power rating.

Come check out all the different pictures and details about this Katech Performance LS Engine with Kinsler Fuel Injection and so much more. Read all about it and the great details in this issue of ...