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 Small-Block Build - Monster Mouse, Part 1

With the success of our Modern Mouse series, we decided it was time to recognize the big-bore crowd. Loyal readers of Super Chevy will remember the Modern Mouse series started with a stock 5.3L LM7 ...
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 ...