Oh great gurus of OSO ... Info on 1999 7.4L MPI 310HP Mrec black motors???
09-17-2005, 07:35 PM
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Re: Oh great gurus of OSO ... Info on 1999 7.4L MPI 310HP Mrec black motors???
Originally Posted by Pat McPherson
The 1999 and newer 7.4MPI engines are vary reliable engines. Just not vary upgradable like the others have said; believe me I have tried... 
One thing that did give my 7.4MPI a bit more kick was a set of Stainless Marine exhaust manifolds. You may not see the +200rpm I did in such a heavy boat, but the cast exhaust should probably be replaced at this point anyway...
Good Luck!
One thing that did give my 7.4MPI a bit more kick was a set of Stainless Marine exhaust manifolds. You may not see the +200rpm I did in such a heavy boat, but the cast exhaust should probably be replaced at this point anyway...
Good Luck!
I sure appreciate all the feedabck
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