CMI Header Applications

Available Systems

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CMI INDUSTRIAL

CMI Industrial is proud of its heritage as a designer and manufacturer of top-quality sound and noise attenuation systems that have set the benchmark for quality and innovation. CMI has enjoyed a decades-long leadership position by offering unparalleled products and services, and maintaining industry-leading customer satisfaction.

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CMI Big Elbow Top™ Race Systems

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.

 

Part Part Number

CMI Big Block Chevrolet Applications

Big Elbow Top Exhaust System with 1 7/8" I.D. primary tubes
All polished finish
13560
Big Tube Big Elbow Top Exhaust System with 2 1/8" or 2 1/4" I.D. primary tubes
All polished finish
13590

CMI Stepped Big Tube Elbow Top Exhaust Systems

Available with any two standard 2 1/8- and 2 1/4-inch inside diameter primary tubes incorporated into each runner.

Single Stepped Big Tube Elbow Top Exhaust System
All polished finish
13620
Double Stepped Big Tube Elbow Top Exhaust System
All polished finish
49040

Split Top Components

Header Upgrade Garage

  • Brackets
  • Sensor Couplings
  • Header Bolts