CMI Header Applications

• Why Choose CMI Header Applications?
• Which CMI Header System is Right for You?
• Build a CMI Exhaust System for Your Boat
• Header Accessories
• Ordering
• Download Catalog
• Download Brochures & Flyers
• Dyno Data:
• - 496 Sport Tubes (pdf)
• - Small Block Headers
• Build Sheets

Available Systems

• CMI Big Tube Systems
• CMI Big Elbow Top Race Systems
• CMI Elbow Top Systems
• CMI Sport Tubes Systems
• CMI 496 Sport Tube™ Performance Package

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CMI INDUSTRIAL MUFFLERS

CMI Big Elbow Top™ Race Systems

click to view larger image

for 9.8" deck height block &
standard GM head castings

CMI’s Big Elbow Top Race Systems are precision-built for Sportsman-class racers who expect the most from their 510 cubic-inch carbureted engine or 600 cubic-inch engine equipped with a blower package. This race-style header system has a superior track record when it comes to getting to the finish line. Racers participating in APBA, SBI, OSS and USO competitions have found CMI Big Elbow Top Race headers help produce more torque and raw horsepower than any competitive exhaust products. CMI Big Elbow Top headers feature a 15 ½-inch long primary runner exhaust tubes and a 4 ½-inch inside diameter collector designed for 4 ½-inch inside diameter tailpipes. CMI also offers a custom-designed stepped system for high-horsepower applications that require larger diameter exhausts, which can be built to meet specific installation parameters. Tailpipes are sold separately.

Best pricing and availability through one of our
CMI Distributors or CMI Authorized Dealers...click here for details.