what is the difference
06-10-2008, 10:27 AM
#2
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http://www.offshoreonly.com/forums/s...502+mpi+500efi
Here is some info. Do a search on here I'm sure you will find more about it than this.
Here is some info. Do a search on here I'm sure you will find more about it than this.
06-10-2008, 10:30 AM
#3
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It depends on the year. The shortblocks used to be the same on earlier versions. Newer versions had Manley rods. Heads are GM rect ports on both. Cam, springs, rockers, intake, ECM program and fuel injection are different.
06-10-2008, 10:42 AM
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I have a 1999, would that be a Manley rod version.
06-10-2008, 10:36 PM
#5
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I should have said the Manley rods are only in the newer 500EFI's. The 502mpi's have GM forged rods.
It depends on the serial # for the 500EFI. It looks like #OL306500 and higher have the manley rods.
It depends on the serial # for the 500EFI. It looks like #OL306500 and higher have the manley rods.
