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-   -   Need help with props.......... (https://www.offshoreonly.com/forums/general-q/214891-need-help-props.html)

getrdunn 08-13-2009 09:52 PM
Need help with props..........
 
I am close to completed my 496's for my 78 spectra. The boat weighs near 6300 pds completely rigged. The original/prior 454/330 set up ran 23 pitch clevers at around 4700 to 4800 RPM's. The trannies are 1:1 and the drives are 1.5. The new rebuilds are expected to be close to 600 HP plus or minus. Will be certain after dyno time. I plan to turn the new rebuilds somewhere between 5600 to 5700 RPM's at WOT.

Any ideas of what prop size I would need??? I would like to purchase some real soon. There is a good used set of Bravo one 4 blades - 26 p for sale on the board and wondered if this might be a good starting point.

Thanks for your help.

John

DareDevil 08-13-2009 10:27 PM
Originally Posted by getrdunn (Post 2931507)
I am close to completed my 496's for my 78 spectra. The boat weighs near 6300 pds completely rigged. The original/prior 454/330 set up ran 23 pitch clevers at around 4700 to 4800 RPM's. The trannies are 1:1 and the drives are 1.5. The new rebuilds are expected to be close to 600 HP plus or minus. Will be certain after dyno time. I plan to turn the new rebuilds somewhere between 5600 to 5700 RPM's at WOT.

Any ideas of what prop size I would need??? I would like to purchase some real soon. There is a good used set of Bravo one 4 blades - 26 p for sale on the board and wondered if this might be a good starting point.

Thanks for your help.

John
John,,,if the 4 blades are a " REAL " good deal ,,,where u can sell them again for the same $$$..buy them!!!!

I personaly would run the 23 cleavers first to see where i am at and then go from there.:party-smiley-004:


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