502 MPI upgrade results
01-20-2012, 12:51 PM
#41
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Haxby, I believe that I have the white painted, ported and extrude honed manifold that came off this engine. I was planning on putting it on my 540 along with a larger throttle body. I think the stock intake is killing my top end as it will only turn about 5100rpm no matter what prop i put on it. Do you think this is going to be enough intake, or should I scrap it and put on something else? I have about 575hp now and looking for about 625. Also plan on dynoing before and after the intake swap to see exactly what happens.
Engine is 540CI, Edelbrock rect port marine heads, Madara custom cam, 9.2-1 compression, Imco powerflow exhaust.
I am really looking for a few more rpm than anything else. Maybe 5600-5800.
Thanks
Engine is 540CI, Edelbrock rect port marine heads, Madara custom cam, 9.2-1 compression, Imco powerflow exhaust.
I am really looking for a few more rpm than anything else. Maybe 5600-5800.
Thanks
02-02-2012, 02:28 PM
#42
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i know this is an older thread but i have a 2000 454 mag with @240 hours on it i'm looking for more power.does anybody know if some of these mods. would pertain to my motor?i know the 502 is bigger ci wise but they share alot of the same parts.anybody modified a 454 mag with any satisfactory results.i'm interested in keeping the efi thats what caught my eye the most.
02-02-2012, 03:34 PM
#43
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i know this is an older thread but i have a 2000 454 mag with @240 hours on it i'm looking for more power.does anybody know if some of these mods. would pertain to my motor?i know the 502 is bigger ci wise but they share alot of the same parts.anybody modified a 454 mag with any satisfactory results.i'm interested in keeping the efi thats what caught my eye the most.
02-07-2012, 01:33 PM
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could not find a number for bob madara.found mark boos number and web site(pmefi.com)am i missing something?really want to get some answers to get a direction for this project.sounds like these are the guys to do it.
02-07-2012, 01:36 PM
#45
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09-06-2016, 11:06 AM
#48
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Flame arrestors and throttle body's are a big deal on these mpi motors too, avoid any aftermarket FA that has a adapter that necks down as on my dyno they KILLED hp over stock FA. IF you mod intake invest in bored out throttle body, it greatly complements the intake mods. Cam is important too, the cam 502's and 454smpis have is a terrible, low lift hp killer. Dont bother modding intake if your keeping stock cam, FWIW, Smitty
09-06-2016, 06:09 PM
#49
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I have two modded intakes, computers and fuel systems to sell
