BruceScrew, how much weight are you pulling with the horse trailer? With my car and trailer, I'm looking at 5,500 lbs.
Did you notice any fuel mileage increase with your KB? If so, how much?
What else have you done to your truck?
Appreciate the info, keep it coming.

 

I never said an ATI was no good for pulling, just that the twin screw (for me) was smoother when pulling and since I was not racing, I didn't care as much about top-end.
I had a KB installed on my F150 briefly. I "rented" a friends after he switched to an ATI for racing. I also run a KB on my Mustang. I will most likely go with a Whipple on my F150 as the construction struck me as a little nicer (perhaps I just want to play with a different supercharger).
How can you ask this question? Aftercooling a centrifugal supercharger is easy, it is seperate from the intake manifold and gives you room to stick in an aftercooler.

In order to inter(after)cool a manifold supercharger, you need a coolling element in the intake manifold. This means a water-air intercooler and involves pumps, radiators and so on. If you do not think this is harder than an air to air intercooler, than I do not know what to say.
It really is hard to beat the look of a low-profile, polished (or matt black) supercharger nestled on top of the engine

I still wish someone would answer my question: If the centrifugal superchargers are so good, how come all of the Lightnings I see with aftermarket superchargers are running KB's?

There are Lightnings running in the Low 10's and every one I have seen has a Kenne Bell.

For about the millionth time in this thread: Each supercharger has its advantadges and its disadvantadges. Weigh them carefully and decide what is right for your application.

-Don

 

Gen I or Gen II? As far as Gen II, the KB is a direct bolt on swap. Very simple install and will cost a lot less than fabricating a cent or turbo setup.

One can't just buy a cent kit for the Gen II.

 

Okay, please excuse my ignorance. What is does GEN I and GEN II mean?

 

Gen I = first generation Lightning(previous F150 body style, N/A)
Gen II= second generation(current Lightning)

Here is some interesting reading froma Lightning board regarding cents.

"http://www.nloc.net/forum/showthread...&highlight=ATI


This saying best sums it up "If it ain't broke, don't fix it."

 

Hi '90 SSC Clone,

I estimate the full load to be between 5500-6000 #'s. That's not the hard part. Pulling a boat, car, or any other item is different than pulling a "live" load. The horses tend to move around alot going on some of the roads around here. It's probably like pulling 6000#'s of liquid splashing around - weird feeling! The trailer is an old steel bumper-pull style not the newer aluminum style; maybe someday we'll get a lighter trailer.

As to the second part of your question, see my signature. I have added a homemade water/alcohol (de-natured) injection system that works great. As the boost reaches 4#, the Hobb switch activates the ShurFlow Ag pump and opens a solinoid which pumps the w/a mix before the throttle body under pressure. The setup costs about $200.00. I tapped into the windshield washer tank; lasts about one to one tank full, more on race days.

 

i see what you mean but i have used the word TRIVIAL to mean, NOT WORTH IT or DOSENT MATTER. IT might be correct but i dont think of some one sayng trivial and taking that to mean EASY.
how about adding an intercooler to a cent is straight forward and easy, adding it to a manifold mounted s/c is not so easy.

the lightning Question is very simple, the fastest mustangs are running turbos and centrifigals. the kb, and roots makes sense on the lightning because they are already set-up that way. Most of the guys that are the fastest make a living selling products and the lightning consumer wants to see under there hood and think, i could do the same thing, looks almost like mine. then there is the issue of intake manifold.
if it was about building the fastest lightning then you would see a tube frame with a 4 link suspension and a turboed big block, the roots blower defines the lightning. it would be like putting a toyota motor in a Ford stock car and winnig Daytona, you could win, but who cares.

 

trivial; adj.

adj. 1. Too simple to bother detailing. 2. Not worth the speaker's time. 3. Complex, but solvable by methods so well known that anyone not utterly cretinous would have thought of them already.

-Don

 

Noise is not an issue for someone running a 10.3 in the quarter mile and who tows their truck to the track, of which there are plenty of Lightning owners.

As for fabrication of a plenum, I have never seen a Lightning owner that races back away from spending money. If you are going to spend $15k on a new engine, what's another grand for a custom plenum?

As for the engine, many of these guys are running 55lb injectors and 90mm MAF's and 132MM TB's.

-Don

 

Except in those Lightning's running a screw supercharger

-Don

 

Don't top fuel dragsters still run roots-type superchargers? If so why?

-Don

 

Correct me if I'm wrong, but is Ford going to move to the twinscrew over the the roots in future releases of the Mustang and Lightning?

 

hey Don are you ready for this:

ITS THE RULES

-Dave

 

i really enjoy this stuff.

check this out:

https://www.f150online.com/forums/sh...hlight=vortech

this truck ran 10.8 in like 97 or 98. now i know that it is a 4v. but it was also built at a time when all the tech that is commimg out was not available. the 5.4 was not offered until 97 so what would it run with the aftermarket available know?

which trivial definition were you using 1, 2 or 3?

 

Lightnings run roots type blowers because they weigh 4600 pounds. Those mustangs can get away with cents and turbos and go really effen fast. Lightnings on the other hand benifit frm having more low end power, having the twin screw as opposed to the roots just gives the low end and more power at the top end as well where the roots fails. I think a twin cent setup has been attempted on a lightning, and failed. Im sure there are guys with single cents and i im pretty sure i've seen a turbo, yet the fastest 2nd gen L so far has run on a twin screw.