Hot Rod

First Look: Performance Design’s XS Intake Manifold for LS3 V-8

A stock LS3 rec-port intake manifold is hard to beat and only costs $299. When Chevy went back to the drawing board after the success of the cathedral-port Gen III LS1 small-block V-8, it realized ...
Hot Rod

LS3/L92 Rectangle-Port Cylinder Heads Test - The Even More Ultimate LS Cylinder Head Test - Speed Parts Testing

Loyal HRM readers will no doubt remember our "Ultimate Chevy LS Cylinder Head Test" in the Dec. '10 issue in which we tested 11 different LS1/LS6 cathedral-port-style heads. In this issue we're doing ...
Motor Trend

LS3 Heads and Cam Test - Heads Up!

Even the competition has to agree, Chevy's LS-engine family is more than just a worthy successor to the original small-block; it's one hell of a motor. The Blue Oval boys are jumping up and down about ...
Motor Trend

LS3 Cylinder Head, Cam, and Intake Swap - Crate LS3 Throw Down

These days, opting to build a Mouse motor over an LS small-block probably means that familiarity and practicality both stepped into the boxing ring, and the former won via TKO in the 12th round. With ...