Performance Custom Marine Inc CMI Small Block Marine Headers:

West Coast Offshore carries all the CMI Small Block Marine Headers including 1 1/2" and 1 7/8" Spread Port and Siamese Port Chevrolet Small Block Headers.

More About CMI Small Block Headers:

CMI’s top notch Small Block Headers increase horsepower by 10 or more while improving fuel economy. CMI Small Block Headers also boost mid-range torque performance by an enormous 15%, which gives you the edge on other boaters.

CMI Small Block Headers utilize the patented “Cool Collar” design seen on some of their other high-performance header systems that keeps the headers cool, as well as “Flex Flare” installation connections for less headaches. CMI’s Small Block Headers are made using the same satin or fully polished 316L Stainless Steel as their other headers systems for long-lasting durability.

All Small Block Header packages come with all mounting hardware that may be required for installation.

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