500 Mercruiser head replacement
04-08-2005, 05:11 PM
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500 Mercruiser head replacement
Opinions please on the best head replacement for a 2000 Mercruiser 500. Is it possiable to get around 575 to 600 hp with a head and cam change on this engine. Thanks in advance for your help and expertise. 
04-08-2005, 10:14 PM
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Re: 500 Mercruiser head replacement
Check out wags382's thread on cam reccomendations,jeff's hp 500's made 540 hp stock on the dyno at over 300hours. He swapped to afr 305's w/cnc chambers and optimized cams and made around 630hp,Smitty
04-09-2005, 06:02 AM
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Re: 500 Mercruiser head replacement
WOW, thats impressive, does anyone have a set of used aluminum heads that they want to sell cheap. With the 500 making so much power how does that compared to the 525 both in stock form??
