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Our basic 500EFI kit put on a stock engine is 575HP. To get the 625HP we put new higher compression pistons, and we use a mono blade throttle body and port the plennum. If you have further questions on our packages give us a call.
Thanks Matt |
Originally Posted by Irishtornado
(Post 3371911)
Guarantee'd 125HP? I've seen both kit's and done lots of research. You have my attention.
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Originally Posted by offshoredrillin
(Post 3371973)
you need more of a fuel system as the 500 efi stock one wont handle it.
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Originally Posted by Baja_man
(Post 3372382)
What did you change, larger pick-up line from tank, aeromotive pump and regulator?
there is no way in hell that by doing all these mods and not changing the fuel pump and injectors that it will live long, you physically cant put that much more air in there and expect it to last. irish, i replyed but your pm's are full :) |
Originally Posted by offshoredrillin
(Post 3372399)
from my tank was fine, but the 500efi pump once it goes into the cool fuel drops down to fitting that is less than 3/8's wide, thats what made mine lean out and blow. go to the aeromotive pump, new regulator and bigger line from the pump up, you will also need bigger injectors. Dave at MDG rigged mine so the fuel pump and regulator stayed right on the same bracket.
there is no way in hell that by doing all these mods and not changing the fuel pump and injectors that it will live long, you physically cant put that much more air in there and expect it to last. irish, i replyed but your pm's are full :) I cleaned it out. |
Anyone tried the Edelbrock Aluminum heads? Part#61559
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Originally Posted by Irishtornado
(Post 3378383)
Anyone tried the Edelbrock Aluminum heads? Part#61559
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Boy, from all the work we have done on our 675HP package for the HP525EFI I would really like to see those dyno sheet results and build data from Cookin or whoever.
Unless you do all the things like Offshoredrillin is describing you probably are not going to see 600HP from a 500efi that will live and certainly not from a 502EFI (MPI) engine intake manifold and throttlebody! Eddie Young knows and he has the experience to back that up too. Just my experienced and work based two cents! Best Regards, Ray @ Raylar |
Originally Posted by Raylar
(Post 3378549)
...I would really like to see those dyno sheet results and build data from Cookin...
Ray @ Raylar
Originally Posted by Cookin
(Post 3171202)
I have 502 with a stock bottom end,except for the balancing and gapless rings,Edelbrock large ovals flowed 340@600,42lb ford greentop injecters and Arizona Speeds Ramjet intake with their 1050cfm throttle body and billet fuel rails.The engine made 598@5200 and 670tq at 3700 with a stock merc. fuel pump.The intake was just port matched.Tuned the computer in the boat with MEFI BURN system.Starts great,idles flawless and we were able to improve the the shift into gear.Shifts better than the stock setup.No clunk.
whille. He is not a professional like Ray but has done his own builds and has had great success. Since I can not build my own engine I will not doubt him. Now if Minihawk or PokerRun388 made these claims I would have to say "Bite me". ;) |
My engine started out as a 500 EFI. Bored and stroked to 540, AFR heads, Bob Maderra custom cam, stock untouched intake with the Tyler Crockett top mount throttle body kit. Aeromotive 1000 fuel pump and 55lb injectors. Assembled and dyno'd by Mark at M.E.R Performance 693hp at 6000rpm. Jeff Wurl
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