Oh great gurus of OSO ... Info on 1999 7.4L MPI 310HP Mrec black motors???
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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!
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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...
![EEK!](/forums/images/smilies/eek.gif)
Good Luck!
I sure appreciate all the feedabck
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