what pistons,heads, and cam will give a Compression Ratio: 9.4:1
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what pistons,heads, and cam will give a Compression Ratio: 9.4:1
i have a 4 bolt main 5.7 casting number 3970010 engine and need a Compression Ratio of 9.4:1 to work with a mercruiser 350 mag MPI system.
this is going on a boat not a truck so i need to know what heads, piston, and cam to build this.
can anyone please help me?
this is going on a boat not a truck so i need to know what heads, piston, and cam to build this.
can anyone please help me?
Last edited by sr_ryan1; 07-19-2008 at 05:31 PM.
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A stock mercurser is rated at NO MORE than 260hp. Seriously, I've been playing with boats just about my ENTIRE life.. If you have an ALPHA foot, go with a stock build. I've replaced over 10 of them on a Baja that I have at homebefore I upgraded to an Alpha 1, with a 260 hp Mercurser and a cam. Go with a stock build, being that you will most likely be turning 3-5K, I'd go with at least a steel crank (some came stock w/ one, make sure you check)