I already started having problems driving my KB in the 20+ lb range. Mostly the balancer walking on the nose of the crank and transfering metal. I could have double keyed it, had some custom work done to the aftermarket balancer, made some billet pieces for the pulley cage, drilled the nose of the crank for a larger damper bolt with better thread engagement and went to a 10 rib belt.....or just give up

I chose to give up and let the exhaust drive the compressor.
Dale

 

wheelies
In the latest issue they (MM&FF) tried to show the difference between the short runner side of the FR500 manifold and the long runner side. They did this by running the engine with the internal throttles closed on the manifold so it would run on the long runner section for the full test......idiots.

All they proved was how restrictive the long runner section was at anything over 5200 rpm. Its another very flawed test, they showed over a 100 hp difference between the two
Dale

 

If the intake is so restrictive than why are turbo cobra's making 1000hp with the stock intake. I can't see how the intake is all that restrictive. There are Lightnings making close to 1000hp with screw type blowers. So please explane how an open plenum with 3 inch intake runners is restrictive?

 

I've never seen a turbo cobra with the stock supercharger manifold make 1000hp a lightning either for that matter.

Its only an open plenum manifold after you take the intercooler out of it. To make a 1000 hp requires about 1500 cfm... I don't know if you can visualize that or not but thats a lot of airflow. And you want to push that thru a stock cobra intercooler or a stock lightning intercooler, even if the pressure drop (restriction) is within reason do you think the stock core is capable of cooling that much air with much efficiency ? I'm not trying to shoot down you idea here....I'm just trying to show some of the problems and why it might not be worth the trouble.

One more thing...I've already touched on the blower drive issue, I want to see somebody make big boost with a 3.3 whipple and NOT have some sort of trouble with it.
Dale

 

betcha those turbo cobra's have removed the intercooler outta the intake. i'm removing my stock intercooler outta the intake anyways. i have a set of 4 valve heads in the garage but not sure if i want to bolt them up just yet. i'll have a bigger intercooler setup on it.

Dale,

in your humble opinion would the lower intake without the intercooler in it flow well enough for without any real runner lenght being wide open. or would i be better off with some kind of short runner intake like the lower half of a navigator intake.

 

I was also a little curious when they ran the roots, screw and turbo comparo. I fealt to keep things much more equal they should have ran the turbo with the stock intake and the centrifical adapter. Not put the '01 style intake on it. I think that made the turbos look "better" over the others. No doubt they would make more power, I think the intake enhanced the gap between them.

Eric

 

Hi all,

We are the company, Sullivan Performance Products, that has been gauging interst in a blower intake for the 5.4L DOHC engines.

While the intercooler in the valley may not be optimum they are still pretty good and will support well over 1100 CFM at 10 lbs of boost, more as boost goes up.

There is enough room between the cylinder heads of the 5.4L DOHC engine to produce an efficient intake manifold if designed properly.

700 HP would be relatively easy to pull out of this combination. I am sure you could push this combo over 800. This would be out of the efficiency range of the intercooler core but could be done.

For maximum horsepower you would be better off going with a turbo or centrifical supercharger where you would be able to run an external intercooler. The majority of 5.4L DOHC owners out there would probably be satisfied with a relatively easy 700 horsepower.

So for anyone that is interested come on by and let us know!

 

Id be in as long as it was a bolt on intake to the 4 valve heads. BUt which 4v heads would htey pair up with?

 

The ones Scott and I have discussed would be the newer DOHC heads. They are fairly cheep I can find new ones for $850 each. The DOHC heads the intake would use can be found on the 03/04 Cobra, Aviator, Mach 1, and Marauder. They have different part numbers for these heads cause of cams I think but the castings are the same. The intake would be designed as a direct bolt up and would use your intercooler and uper part of the intake. This would allow Lightning owners to use the stock blower or any of the screw type out there.
So is there any more interest out there? I thought maybe some of the vendors would be interested in this.

 

The intake would be designed to mate to:

the 99-01 tumble port heads, commonly referred to as "C" heads, the 03-04 Cobra, Aviator, etc.
the FR-500 heads from Ford Racing
and there will be enough material to allow the intake to be port matched to the large port Lincoln Navigator heads.

This intake will not work with the 92-98 DOHC heads or the just released Ford GT heads.

 

Let me get this right. I could go to a junkyard, buy a set of 4 valve heads out of a navigator/cobra/mach,/marauder, your intake and bolt up to my stock itnercooler and eaton. IF thats correct then id be interested in one.

 

Yes! thats the whole idea to this.

 

Hi Scott
Thanks for coming here and introducing your self....It looks like you and I are on the same page on this manifold thing.....To all who are interested in this, look up Mr Sullivans company they are for real and make extremely nice "stuff" for mod motors.

Robert
Except for a lot of volume to fill up I don't see a problem with leaving out the stock intercooler, if your going after big power and I think I seen you mention 1000 horse some where, I think thats the only way to do it. I don't have a problem with the stock lightning intake as far as runner length or volume...I think its plenty capable...its the intercooler that bugs me. I spent a lot of time on mine and set the stock intercooler aside and made my own out of a Spearco core. I studied as many numbers as I could get a hold of and the more I learned the more I was conviced that the stock intercooler was limited, the problem was even with all the work I went thru to put the Spearco core in there, I probably didn't gain alot with it. It is capable of moving a lot of air with very little pressure drop....it just aint big enough to cool it all. Dale

 

Well Dale you could run alot of ice water through the system for out at the track. Since for most of us thats were we would want to be making the most power. A large air to air would be nice but it won't work for a roots/screw typ blowers. Or you could go turbo but the cost and the install is just to out there. This would be a cheep way to go DOHC and you would see some real big power gains. Or if cooling is an issue you can do like what I plan on doing and that is a small shot of nitrous to cool the air.

 

The nitrous works Awsome....as long as you don't get greedy with it. These manifolds are not very good at wet flow.
Dale