OMC 5.8L Engine Specifications

by Darryl Cameron; Updated October 25, 2017

The Outboard Marine Corporation (OMC) was a well-known producer of marine outboard engines and stern drives in the 1970s and 1980s, competing mainly with MerCruiser. Problems with the company's Cobra line of stern drives, however, resulted in a widespread recall in the late 80s and the company eventually went out of business. OMC engines and stern drives are no longer produced, but many are still used. OMC's 1993 line included several 5.8-liter outboard engines that differ only in their horsepower rating, which ranges from 235 to 290 horsepower. All other engine specs are identical.


OMC 5.8-liters are four-stroke engines with eight cylinders. Gear ratio is 1.41-to-1.


The 1993 OMC 5.8-liter engines operate at a minimum of 4,000 rpm at wide open throttle (WOT) and 4,400 maximum rpm at WOT.

Drive Type and Splines

The 1993 Cobras were driven by stern drives, with 15 engine splines.

About the Author

Darryl Cameron has worked as a professional editor and writer since 1999. Proficient in online and interactive publishing, new media and Web technologies, Cameron concentrates primarily on technical, business process, IT/computer science and medical topics. He has written for publications including "Managing Automation," "Spectroscopy" and "Managed Markets." Cameron holds a Bachelor of Arts in English from Montclair State University in New Jersey.

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