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We fully ported the bottom half opening it up as much as possible, cut the TB mount off the front and made a 3 inch thick one ported the top and radiused the front also opening up the TB as much as possible, all the way to mounting studs. 565cu in. 9.3 comp. Solid roller. 703 ft lbs at 4600. 671 hp at 5800. I still have this intake if you would like to try it.
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Originally Posted by KWright
(Post 4374766)
We fully ported the bottom half opening it up as much as possible, cut the TB mount off the front and made a 3 inch thick one ported the top and radiused the front also opening up the TB as much as possible, all the way to mounting studs. 565cu in. 9.3 comp. Solid roller. 703 ft lbs at 4600. 671 hp at 5800. I still have this intake if you would like to try it.
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I built a sheet metal upper for a 500 efi manifold and used 4 2 bbl throttle bodies (scratch built) on a 598. It made 730 hp @ 5600 rpm and best I can remember about 750 ft. lbs of torque. It really layed down after 5600. I ran that for a couple of years, then switched to a Dart tunnel ram with the same throttle bodies. HP jumped to 800 @ 6000 rpm, but lost about 40 ft. lbs. of torque.
Bob Lloyd |
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Originally Posted by bobl
(Post 4374857)
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Originally Posted by Young Performance
(Post 4374747)
Yes, we did plenty in the past with both a Mefi 1 and 2. Although, it's certainly not the best choice of ECM. But, if you have it already, I understand that you would like to use it. So yes, it will work.
Eddie |
Originally Posted by Young Performance
(Post 4374671)
That's the one. Hogan built the intake. Very nice piece that made some great power. Cool setup.
Thanks for the link BG. For the life of me, I couldn't remember where I saw it. Eddie |
Originally Posted by GNJ
(Post 4375084)
Thanks Eddie - I looked at Hogans website and a BBC manifold is over $6K with fuel rails for 2 motors. Nice looking though, down here in FL my motors get subjected to salt water. As much as one can do with salt away flushing, the aluminum portion in the water passage would get ate up. One more reason why the 500EFI intake looks appealing.
Eddie |
So I have been reading this thread , I have a 540/500efi also that has a " intake manifold " issue also . I have contacted a engine guy in the business that said he has a program that removes the restriction in these , and the throttle body's . I have a dyno sheet that I believe is not accurate that's why I am working on the flow numbers on these . I also looked at changing to hogans intakes but have been advised against it ( from two major boat engine guys ) due to a potential " noise " in the sheet metal that the intakes are made of affecting the timing ?
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Originally Posted by kennyd
(Post 4376357)
So I have been reading this thread , I have a 540/500efi also that has a " intake manifold " issue also . I have contacted a engine guy in the business that said he has a program that removes the restriction in these , and the throttle body's . I have a dyno sheet that I believe is not accurate that's why I am working on the flow numbers on these . I also looked at changing to hogans intakes but have been advised against it ( from two major boat engine guys ) due to a potential " noise " in the sheet metal that the intakes are made of affecting the timing ?
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