short block OMC


Old 08-02-02, 11:24 AM
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short block OMC

Is their any diference between a OMC 5.7L GMC 1988 engin short block and a 5.7L GMC auto or truck short block?
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Old 08-11-02, 11:03 AM
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Hello: imphil

Plenty of differences both major and minor between auto engines and marine useage engines. The engines may look the same but are not built internally to the same quality.

Boat engines are internally designed and built to run at constant higher rpm's and load conditions. There is little engine resting time [coasting} and they are subjected to quick changes in engine speeds and loads across the entire rpm range.

Pulling skiers as it applies to speed boats and equally as demanding in fishing boats, are perfect examples of the loads, power demands and requirements for quick accelerations and top running rpm speeds for both short and long terms and distances.

With that in mind, all internally revolving and rotating lubricated parts must be built to a higher standard of perfection and superior quality.

Boat engines are also required to have sealed parts and assemblies for all electrical suppling and using parts etc. Examples are but not limited to alternators and starters, etc.

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