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Discussion Starter #1
A buddy of mine is looking to get a pair of 632's for his boat, he is looking at 700HP with deep 770 plus torque. Open for Head and Cam combo's that will work with a 9.5 to 1 , he is thinking on using an Iron eagle head with porting but not sure of the runner size he would use. Motors would need to be able to run at 5,000rpm for a period of time. Any info, thanks
 

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Have done my share of marine engines, why limit yourself to an iron head? Build a 598 with a decent set of heads, they are still easy on parts and you can easily meet your HP goals. That much torque might be a little harder.
 

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Have done my share of marine engines, why limit yourself to an iron head? Build a 598 with a decent set of heads, they are still easy on parts and you can easily meet your HP goals. That much torque might be a little harder.
He's had aluminum and wants to try iron, something to do with the cooling i believe, not to sure. I suggested 345's but he is leaning toward Iron Eagles.
 
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