350 chevy, 20 ft boat, goes about 55 mph but as soon as i push 35 the engine makes...

Jon

New member
...weird noise andwake changes? the spline is in good condition, i replaced the hub in the prop...what else could this be? The hydrolics? i go over 35 and the engine revs high and slows down slowly i dont know what else to do
 
Your prop may be cavitating - drawing in air instead of water. Isn't that a big engine for a 20ft boat unless it's a racing boat?
 
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