Recent content by Canadian thundercraft

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    1985 OMC 3.8l Max safe RPM operating range

    Just installed a 3.8l that was purchased from a running boat. It appears the engine was rebuilt recently but i am not sure if the engine was rebuilt from a GM 229 automotive based engine. I am not 100% sure that the cam was changed to a marine cam. What would the operational difference be...
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    85-3.8l cracked block options and 3.8 to 4.3 conversion

    Hello Everyone, Great site and glad to be aboard. I have an 19' 85 Thundercraft that has a 3.8l with a cracked block. I am in the process of removing the engine from the boat. Basically I am at the stage where everything is stripped down and we are ready to pull the motor and would have gotten...
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