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Prop size for 600HP

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Old 04-30-2009, 11:11 AM
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Default Prop size for 600HP

Please only been there done that suggestions…………………………………
…………
Ok I need a starting point. 23' Wellcraft Nova don’t have any Idea on what prop to start out with This is what I have 4000# deep V cuddy hull with a DYNO 502 640HP at 5800 and 624TQ at 5000 without accessories. Bravo 1 with 1.5 ratio. I ask Throttle Up they had no suggestion on props they only do CNC props. Therefore, do I want 3, 4, 5 blades, what hub…what pitch and labbed or not and what brand?
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Old 04-30-2009, 11:17 AM
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Probably not too many people with that exact combo. You might want to call Brett at BBlades.

If it were me, I'd start with a stock Bravo 1 26P 4 blade; and have a 28P on hand.

What prop did you have on the boat before upgrades? 3/4 blade?
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Old 04-30-2009, 12:25 PM
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As I stated you want high rake props, like a Bravo I . If your drive height is original then 3B or 4B props will be the ticket. Your drives need to be pretty high to run 5B props.

Julie
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Old 04-30-2009, 12:29 PM
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Quote:
Originally Posted by Sydwayz View Post
Probably not too many people with that exact combo. You might want to call Brett at BBlades.

If it were me, I'd start with a stock Bravo 1 26P 4 blade; and have a 28P on hand.

What prop did you have on the boat before upgrades? 3/4 blade?
It was a basket case no prop and a 290 HP small block
I have a 3b 25 Mirage that cam with the Bravo 1. I don’t want to go out spin over the 5800 + to max rpm to find out I don’t have enough prop. Which some non-experts say I will be 6000 + on the Rpm with the 25" prop.

Last edited by goebel1; 04-30-2009 at 12:35 PM.
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Old 04-30-2009, 12:38 PM
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Quote:
Originally Posted by goebel1 View Post
It was a basket case no prop and a 290 HP small block
I have a 3b 25 Mirage that cam with the Bravo 1. I don’t want to go out spin over the 5800 + to max rpm to find out I don’t have enough prop. Which some non-experts say I will be 6000 + on the Rpm with the 25" prop.
So why not throw the 25 on it and see what happens?? It would give you a good starting point.
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Old 04-30-2009, 12:51 PM
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A 28 pitch Bravo 1 would be a good starting point. Use BBlades test program.
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Old 04-30-2009, 01:05 PM
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So why not throw the 25 on it and see what happens?? It would give you a good starting point.
I dont want to float the valve to find out. I relize no can say for sure what pitch but may be a starting point
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Old 04-30-2009, 01:06 PM
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Quote:
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A 28 pitch Bravo 1 would be a good starting point. Use BBlades test program.
Waiting on a return call from BBLADES
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Old 04-30-2009, 01:38 PM
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I spin 5000rpm with tuned B1 26P props behind 6.2 bone stock engines with 1.65 D/R . I'd start no less than 28P with your setup.

Ps; Kidnova on Speedwake has a 23 Nova with 502 .Less power but could give you some pointers on prop selection.

Last edited by spectras only; 04-30-2009 at 02:30 PM.
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Old 04-30-2009, 01:39 PM
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Quote:
Originally Posted by Griff View Post
A 28 pitch Bravo 1 would be a good starting point. Use BBlades test program.

This is what I would do too.
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