GM 2500/3500 6.6L Duramax

AIRAID has figured out the secret to improved throttle response in the Duramax Diesel while also gaining more horsepower and torque. AIRAID's latest MXP Series cold air intake system for the "LLY" & "LB7" Duramax directs air directly to an AIRAID Premium Filter, the heart of the system. The computer-designed system seals against the hood to ensure cool, outside air is fed to the intake through the massive air inlets.

The new Airaid MXP intake system replaces the restrictive stock intake system with a one-piece roto-molded airbox and specially designed intake tube constructed from x-linked polyethylene for improved airflow, heat resistance and proper mass air sensor location. This kit also includes a high flow premium air filter that is washable and reusable. The filter is available with either SynthaFlow composite or SynthaMax Non-Oiled filtration technology providing additional airflow through the massive air inlets in the one piece intake box. The end result is dramatically improved throttle response and unmatched horsepower gains over stock.

This new MXP intake system comes with a complete hardware package, easy to follow instructions and installs with ordinary hand tools. The kit also comes with AIRAID's Exclusive "No-Hassle" Warranty.  For more information contact Airaid Filter Company on the web at www.airaid.com.


Cooling mid-Sixties muscle cars has been a problem since they were new. Certain body styles simply didn’t provide enough airflow for the original copper/brass, small-row radiators of the day. And they still don’t! This is particularly acute with big-inch factory engines or engine swaps into 1964-’72 GM A-bodies. This Mark 7 aluminum radiator has been custom made for a high horsepower big-block Chevelle. The big-block is backed with a beefed up Turbo 400, so provisions for the transmission tubes are provided, just like the factory radiator.

This radiator has been specifically made for this application, and features dual 1.25-inch cores, capable of cooling up to 750-dynoed horsepower in 100-degree weather. All Mark 7 Radiators are custom made for your specific application, they are not off the shelf units. You supply the specifications on your engine, transmission, etc., and in approximately three weeks, the big brown truck delivers your aluminum jewelry. The quick cooling benefits of aluminum are huge, and this radiator is about 40% lighter than stock. The natural finish units start at approximately $650, with anodized (black or 16 custom colors) slightly more. Custom shrouds are also available. Visit www.mark7radiators.com for more information. Cool down your hot ride today!

New Holley 2X4 Dual Plane for GM LS Engines

The technology of the LS pushrod engine is now mated with the impressive multi-carb looks and performance of the muscle-car era. The Holley GM LS1/LS2/LS6 2x4V dual-plane manifold was designed in the tradition of the great dual Holley 4160 induction systems that competed on drag strips, in Trans-Am, and at Lemans in the 1960s. The dual-plane equal-distribution layout produces great mid-range torque without compromising top end power. The LS engine architecture does not use an intake mounted water neck or distributor so it’s perfect for two Holley carburetors or throttle bodies and this intake manifold design takes full advantage of that opportunity. Carbureted (PN 300-120) and EFI (PN 300-121) versions support a 1,500- 7,000 rpm power band making it appropriate for any street/performance, muscle car, or street rod enthusiast.

For more information contact Holley Tech Service, 1801 Russellville Road, Bowling Green, KY 42101. Telephone 270-781-9741. For nearest dealer: 1-800-HOLLEY-1. Or visit them on the web at www.holley.com.