Evinrude, Johnson, and the OMC V-8 engine jet drive

In 1972 these companies introduced high powered water jet drives to boat buyers using a 307 cu. in. V-8 Chevy marine engine for 245 Hp (using a 4,200 – 4,600 rpm range) in a water jet sterndrive drive. This package had a 290 Hp upgrade option in 1975. By 1976, with poor sales and Wankel Rotary  engines taking center stage, OMC quietly dropped offering water jet drives to boat builders via their Stern drive division.

Think 1970s era Chevrolet Chevelle cars when the 307 V-8 comes to mind. 307s have small valves, tight heads, and lots of Hi-Po potential but still are not a 350 Chevy V-8.

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