502 mag power curve?
05-15-2006, 11:04 PM
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502 mag power curve?
I have a 502 mag in a 271 fastech that I have done some minor upgrades to. EMI thunder exhaust & EFI upgrade kit. Does anyone know at what rpm peak hp is made with the 502? I can spin a stock 26 bravo 1 to 5100RPM. Would I be better off trying to spin a 28 at lower rpm to stay closer to the peak hp?
05-17-2006, 12:26 PM
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Re: 502 mag power curve?
05-17-2006, 03:40 PM
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Re: 502 mag power curve?
The 28 will increase your speed at 3000 rpms. So if your cruise more than run wide open it will increase your efficiency and mileage.
05-17-2006, 05:05 PM
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Re: 502 mag power curve?
Only way to know is to try a 28.But if you load the boat down with people and gear,getting on plane will be slow with the 28.Actually real slow 
Borrow a 28 and see.And remember, 271's use left hand props,if you borrow a right hand,just run it in reverse to test,no problem.
Borrow a 28 and see.And remember, 271's use left hand props,if you borrow a right hand,just run it in reverse to test,no problem.
