I don't abuse my 383 and maintain the drive based on all recommendations made without cutting corners or delaying doing something that is obviously recommended as preventive maintenance. That being said I feel the 383 is the perfect motor for the boat and run her around 3000 to 3500. Cruising speed is right around 27knts. Do not push it up too much only to blow her out once in a while. A am not sure what the expectancy of the drive will be. My mechanic inspects is regularly and feels maintenance and RPMS are the main things to be aware of. Never push her too hard too long and don't step on her out of the hole a lot
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