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ricardo tubbs
07-22-2009, 05:39 PM
Hi, I have a 1989 blackwidow with twin ford 460 (345 hp / stock)with omc king cobra`s (not with the humps / a dog clutch) one clock wise the other counter clock.
the props. are stock stainless (viper) with 23 pitch.

my problem is the hub of these props. are round and made of rubber, and one of them (clock wise) is turnig on it self if when i give to much gaz when launching the boat out of water, ( i have to keep it under 3300 rpm) , then at top speed it has no more rpm pased 4500 rpm.

I know there is a conversion kit to fit a sqare hub with a mirage prop. wich has bigger fins, SO MY QUASTION IS WHAT KIND OF PITCH SHOULD I GO WITH A MIRAGE PROP.
p.s. the boat lauches out of water easely with the 23's