max boost on 502 mag efi??
02-13-2013, 10:29 PM
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max boost on 502 mag efi??
What is the max boost that can be applied to a stock 502 Mag Mpi before head gasket or rotating assembly failure is a risk? Per say from a M1 procharger???
02-13-2013, 10:43 PM
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curious to read answers... I would think the blue motors are stronger, able to withstand 5, maybe 7 psi, but black motor... would compare them more to the 525 sc wich were 454 with a 3 psi blower... so I would think 3 pounds of boost ???
But I,m not an engine guy... just general knowledge on internet...
But I,m not an engine guy... just general knowledge on internet...
02-13-2013, 10:55 PM
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I have a 502 mpi on 5 lbs tuned by mark at precision marine and its super safe and reliable on 5 lbs and ita good for 91 octane on stock injectors. So its def more than 5 im thinking 7 to 10 lb with over sized i.injectors. im just wondering what people have maxed them out at???
02-16-2013, 08:06 AM
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02-16-2013, 08:11 AM
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On a serious note. This is what i have in mind. Stock engine. Aftermarked head gaskets. ARP head studs. Bigger valve springs. Bigger injectors. And a 7 to 10 lb pully. And haul the boat down to Eddie Young and have him dyno it and put a custom tune in the ECM
