Hey Mike I was wondering if you carried and sold
ATI PROCHARGER Superchargers?

Thanks,
Richard D.

 

Hi Richard,

We can provide them, but generally don't for trucks & SUV's as a general rule unless it's for a racing application with either a manual tranny or a trans brake on an automatic. This is because any centrifugal supercharger, whether it's an ATI or a Powerdyne, Vortech, or whatever brand doesn't matter, it's just that a centrifugal blower isn't the way to go on *any* street-driven vehicle weighing over about 3800 lbs., and certainly not a 2-3 ton truck or SUV, as boost is dependent upon engine rpms. So you have no real performance gain under 2500 rpm, and not a lot in the 2500-2800 rpm range, it's real power comes on at about 2800-3000 rpm & up. Whereas with a positive displacement supercharger, you have *instant* power at *any* rpm, and at any throttle position.

We've tuned a lot of these trucks with every blower imaginable, and the exact same thing happens with all centrifugals, they have little to no power gain in the lower rpm ranges because due to it being a centrifugal, boost is dependent on engine rpms. Thus they have poor throttle response compared to a positive displacement supercharger when cruising on the highway, or for towing, or in just about any other situation.

The ATI blower is a *great* supercharger, don't get me wrong, it's a very high quality blower to be sure, and it can make big boost levels. Which is perhaps why it's the power adder of choice in certain classes in drag racing in *Mustangs*. Centrifugals simply aren't tehj best choice in a street-driven F-150 (or any 2-ton or heavier vehicle) due to them not making boost unless the engine rpms are up.

Now there are some 4.6 F-150 owners with 5-speed manuals running these ATI's that are happy. And with a manual tranny, it's easier to keep the engine rpms up high enough to make boost. But the typical F-150 owner, whose truck is a daily driver that may also do some towing, or that goes to the drag strip, etc, wiull be better served by a properly set up & tuned positive displacement blower. There just isn't any getting around the fact that in these low-rpm motors which are all done at 5400 rpm even modified (unless you build the motor, port the heads & change cams), a centrifugal blower just isn't going to give the kind of throttle response and instant power than a positive displacement blower will.

Centrifugals like the ATI or Vortech, etc., only have an edge in these trucks at higher rpms, so they can do a neat job if you build the motor to be capable of sustaining higher boost levels, such as 12+ PSI, etc., which cannot be sustained on the stock pistons. And then keep the motor turning higher rpms, of course, with a set of 4.10 or shorter gears.

It's really a matter of choosing the right type of part for the application, it's not a matter of ATI not being a good blower, it's a *great* blower, just not for heavy vehicles. In just about any F-150, a properly setup & tuned positive displacement blower makes a far better choice & result in terms of a daily driver, with plenty of power for even drag strip use if that's your bag.

This is a subject that really can't be covered here properly of course, you'll need to call us about to go over in proper detail.

 

Mike once again your vast knowledge has come thru I did not even think about it that way and since I do in fact tow a boat HP/TQ are important to me down in the low RPM's so it appears as though maybe the Magnacharger would be a better fit for my application. And on another note: Will the Gatorback belt that fits the stock 5.4 w/A/C work with the ASP pulley set and what kind of real gains can I expect from switching my pulleys here are my current mods. also if memory serves me correct the crank and water pump pulleys are the ones that get replaced how will that effect my water flow for towing?

Superchip
AF1
JBA Headers
BBK throttle Body
Borla Exhaust
Electric Fans

Thanks,
Richard D.

WHILE YOUR HERE CHECK OUT MY GALLERY:
https://www.f150online.com/galleries....cfm?gnum=2479

 

Hi Richard,

Yes, for towing & daily driver, etc., the Magnacharger will give you a much better result.

On the ASP pulleys, on the 8-rib F-150 system (which is what all 1997-2001 F-150's use, and almost all 2002's) you can still use the standard length (99" w/AC) serpentine belt. Some of the 6-rib systems require a different belt, which some of the 2003 F-150's have, will require a small change in belt size.

Yes, it's the crank & water pump pulleys, and 12 HP gain at the rear wheels is what you get. There is no concern with water flow for towing, the crankshaft pulley is smaller than stock, but the water pump pulley is actually *larger* than stock with the pulley set we use on these F-150's, so that the engine will be properly cooled in *any* situation while still freeing up power by reducing parasitic losses elsewhere, alternator, power steering, etc.

Give us a call for details, as always.

 

hey mike . received everthing i ordered,except belt for new pulley.8#.,girl that answeredphone at performance; said' didnt have belt in stock, was coming from somewhere else, starting to get a littlt concerned,i had to make an appointment to have all this work done,1 weeks ago.,do you think i will receive belt this week? maybe you could check and let me know .ill give you the dyno info when everything is up and running. thanks .wally

 

Hi Wally!

For this sort of thing you need to call us, as it's against the rules of F-150 Online to discuss things like order status ("where are my parts" posts), Tech Support, etc. here on the message boards. Those matters are between vendor & customer, thus must be discussed privately between thsoe parties, off these message boards.

Additionally, there is the problem of us having no way of knowing who you are here, as everyone uses anonymous screen names. So I don't have the first clue who you are, other than someone named "Wally." We have *many* customers named "Wally" that do business with us frequently, since we've been around for many years, as you can imagine.

Now I did ask our staff to check for all recent orders for someone named "Wally," and there were none in the past 3-4 days. There are a number for people named "Walter," however. See what I mean? It's not possible to know who you are here.

I did find a "W.R." that called here today about his belt for his 8 lb. pulley & was told that his belt was scheduled for delivery today, maybe that is you?

Anytime you need info about your order, please give us a quick call & we'll be more than happy to help you right away.

Thanks in advance for your understanding on that, & talk to you soon!

 

Having installed a vortech in the last 3 weeks i can agree with most of what mike is saying. my truck (heavy 5.4 supercrew, 3.55 gears and a 32" tall tire) could not spin the tires before and still cannot. the power come on at 3,000 rpm plus.

BUT, from a passing situation 45 to 60, this thing is awesome. from a dead stop to 3000 is like a normal truck but if you leave your foot in it , the power seems to just keep on coming.

As far as towing goes, i dont under stand most peoples need for all the low end, the most difficult situation I experience is merging to the free way where you enter at 35 to 40 and have to merge to 55 or 60. i dont know about the rest but i hit it, let the trans drop a gear and my rpms are not in the 2000 range but in the 3000 to 4000 range for a short period than back to cruising speed which my truck never has a problem keeping speed, thats when it was stock. i ocasionally pull my 3400 lb. car on a trailer

the roots might be a better choice but dont think the centrifical is not capable. MIke is right, 4.10's would make a good fit with the centrifical. I still need to do a transgo kit so i have not done to many full runs. seem like a roots would be harder on the engine, trans and rear end.

 

Hey guys,

I just installed a Kenne Bell twinscrew positive displacement supercharger last month that came stock with an 8 PSI pulley and 34# fuel injectors (no more FMU) for a 2001 SuperCrew 4x4 5.4L. The power is instant and awsome! I had it on a chassis dyno that produced some really nice numbers. I will be looking at a better chip upgrade to get better performance than the stock KB chip that comes with the kit. I will need Mike T. to re-burn my original chip. The guys who are getting nice numbers on the ATI SC's are general looking to maximize power for the race track; I'm looking to tow and occassionally take the truck to the track. Good luck on your purchase.

 

mike.wont install pulley are chip till monday. i was wondering how these #off the dyno,will helptelling you if everything is a ok!dyno run 1max power=342.7 max torque=419.7 air fuel12.2 at5300rpms at 3000rpms15. dyno2max power=338.2 max torque450.5 air fuel ratio13.2 at3200rpms 11.9 at5200 rpms. thanks mike maybe your response will help with the installation.wally