502 mag mpi
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502 mag mpi
Ok lets say im building a 509 and keeping the MPI with good heads like afr 305's, stainless marine exhaust and a mild custom cam that should make peak power around 5400 rpms and horsepower between 550 and 575. Ive done a lot of searching and realize my stock black 502 intake is very restrictive. Most say its only good to 575-600hp without any port work done. Does it make sense to change it to a 500efi intake or have a bunch or porting work done or will I not see any advantages as long as im under 5400rpms and 575hp? Not sure if it will effect me or not where the rpm and hp range is??? Thanks for the help.
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Rob, When I was building the 415/502 everyone I talked to said no matter what you do to the intake & plenum it will do little or nothing. That's why I bought the 500 EFI setup.
Talk to Jason or Bob Madara @ Marine Kinetics 585-654-8583. Both will give you all the information you'll need.
Good Luck
Jake
BTW, I thought you were going to stay "STOCK"..
Talk to Jason or Bob Madara @ Marine Kinetics 585-654-8583. Both will give you all the information you'll need.
Good Luck
Jake
BTW, I thought you were going to stay "STOCK"..
#3
Yeah, when I thought about making my 502s into 540s, everyone said to find the HP 500 manifolds because the black manifold is so restrictive. I think smitty did some huge mods to one and got some good power from it, but that was hugely labor intensive and it would be easier to buy the good manifolds.
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I switched my 502 MPI to the 500efi intake. I also made it a 540 with AFR heads and Bob Maddera cam. M.E.R performance in Little River SC. and Bob Maderra have a package they are puting together. My motor made 693HP on the dyno with this package. Jeff Wurl
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thanks for ther info guys, I do understand the intake is very restrictive but do you think it will hurt me at the HP and rpms im running? Just wondering if it flows enough for what im doing or not. Not looking at making over 575hp max and I dont want to spin anything over 5400 anyway.
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thanks for ther info guys, I do understand the intake is very restrictive but do you think it will hurt me at the HP and rpms im running? Just wondering if it flows enough for what im doing or not. Not looking at making over 575hp max and I dont want to spin anything over 5400 anyway.