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Old 05-18-2008, 11:37 AM
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bondo bondo is offline
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Ayuh,......

I spent most of my internet time at iboats engine, I/O forums,....

The 906 Vortecs are the Go To heads for Us boaters,.....

They seem to be a bolt on 20/ 30hp in most cases,+ the Exhaust Seats are a Big Plus,....
Due to the fact that boat motors are Always pulling their guts out, running Uphill all the time.....
And being held at about 4800rpms with the prop loads, it's believed that, that great Big Seat helps cool the valve even better....
Tuliped exhaust valves seem to come by less often....

I've got a set of 906s going on my 383 motor for my on-going Hull refit.....
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