I find it pretty funny how ATI claims that the twin high flows are rated 800-900 hp. Actually I will go out of the way and state that they told me a year and a half ago that the twin high flows were only good for 700 hp. As Rich already stated to get the most out of the setup I would highly recommend going with a Spearco front mount intercooler. IMO the twin high is a poorly constructed kit with many restrictions. Again I am basing my statements on experience rather what ATI says and what I hear from other people. Unlike Rich I did have to grind away my block in order to clock the blower outlet in the 6 o clock position. I also did have to have my friend make me a custom spacer in order to line the blower crank pulley with the blower pulley.

 

Now thats news, i didnt know that ART. is that something common people have to do with the F1 ?

 

Does anyone have any pics?

 

What are you trying to see with pics? The F1 mounts like the rest of the ATI blowers designed for an LT1.

 

Well, some poeple say they have problems with clearencing, and others don't. I have a couple of friends that work at ati, and they say that not many people have teid it. I basically just wanted to know the biggest blower I can fit. Maybe an f1-c, guess I just need to look at the demensions.

 

Hey, they also say the P-series blowers will do like 30+ psi.

I'd go w/ a Spearco FMIC. You can get 3 2-110 cores welded together w/ endtanks on top and it'll work pretty good. Should run between $700-$800 depending on the dealer. I know some guys are running the OBX units and they seem to work pretty good.

 

Yea, alot of the LS1 guys are trying out the obx intercooler to get away from using the twins.

 

You mean they don't make 30 psi of boost.

Someone needs to tell ATI that the P1SC has enough problems making half of that. They will then direct you to the experts who will tell you that they have many cars in the country making 30psi out of the P1SC. All I have to say to that is yeah right.

 

I unfortunately do not have any good pics of the blower installed on the car. We had to grind away quite a bit near the freeze plug on the front of the motor. The amount of grinding is dependant on how you plan on clocking the blower. It is funny how bad ATI lies about stuff. They told me that they have several cars running the F1 blower on LT1.

 

It's funny they put that number out, but when you ask them about running a 15# pulley, they say no.

As for the block grinding issue, I thought that only applied to the F-1R unit. I could be wrong, but I know the F-1R head will need about a 1/2" of block clearancing right above the freeze plug.

 

Well I didnt exactally ask ati, I asked 2 really good friends that work there. Guess I need to get some money and find out.

 

Yes, they will-kinda. The ratings that ProCharger gives on the blowers is the max boost the unit can make before it gets too inefficient, starts to have compressor surge, or has too much strain on the internals and impeller. Those boost #'s are NOT what they can make on any given engine. Expecially on a mildly built V8, let alone on a highly built one.

Well, that's because it's nearly impossible with a P1SC on an LT1 or LS1. The pulley would have to be so small that you would either slip the belt or redline the blower before it gets to 15#. It may be possible with a D1SC, with it's helixed impeller, but not with the P1SC's straight impeller.

 

Right, but that's a tad on the side of false advertising. 30# is a mark that the F-series stuff hits w/o a problem, not a little bity P-charger.


I think ASP used to make 15# pullies for the p-series blowers. In fact, there's a couple people on here who have or used to have them. Myself, I'd never try to spin a little p-series that high, but it's been done and they did work. From what I remember, ATI never warned me about the impeller type, it was more along the lines of the RPM the impeller would see. If you needed to run that much boost, changing head units is not only the more efficient route, but it's a lot safer too.

 

I know when I had my P600b ATI sold me a 15 lb pulley. They told me that the P600b was a great blower and how I would have no problems running the 15lb pulley. Yeah no problem because after the blower encountered a bearing failure (did not overspin blower) they wanted to charge me an arm and a leg to rebuild it. Regardless of what the problem is ATI always blames the customer. I have heard just about ever excuse in the book.

I find it hard to believe that the P1SC would make 30 psi of boost through my RC Car motor.