trident

i want to go FI when my engine comes back. only prob is, I'm having it further bored to 4.125 from its 4.1 bore, and using a shorter stroke 4" crank. so it'll be a 428ci. its all I have to work with, i can't get a new engine built, this one i'm getting for free. i'm just paying for the machine work. its resleeved LS1 block.

how will a F1R do with this size engine? not gonna use 6 bolt heads either, just ported L92's with a ported L76 intake.

gimmie some opinions please. I would love to put down 900 rwhp. thats the goal.

also, where should I get the kit and keep my A/C. its a WS6 Trans Am that will only be driven on the street. full interior.

Thanks.

trident

looking through the sponsors...who sells the F1R sc'er and complete kits ready to install?

SS4Matt

iTrader: (4)

I would have to say "EPP" Exotic performance plus would be the ones you would want to talk to about anything in regaurds to a pro-charger system. I hear they're good people

ZLEEPER

iTrader: (24)

from my epxeriences with the f1a I'm having installed, I think that is about as big as you can go in a fbod while retaining ac etc...Hopefuly, mine will be done soon, so I can post some #'s with a 408 F1a with some L92 heads.

EPP

iTrader: (22)

Thanks, we appreciate it!

The F-1R with the f body bracket assembly will require modifying the radiator support to allow for clearance. The F-1R also requires a lot of power to turn it, which tends to cause belt slippage. For a street driven car, I'd go with an F-1A. Check out this CTS-V with an LS2/402 with an F-1A. The dyno graph is clear at the bottom. This car makes enough power that it broke the tires loose somewhere between 60 and 70 miles an hour an the car did several 360's on the highway for it's owner. This was with Nitto's on the rear, it now has M/T drag radials on it. http://www.exoticperformanceplus.com...Car.php?car=29

Here is our ProCharger kit price.
http://www.exoticperformanceplus.com....html?item=798 Bob

jmdgto

t-bones a gto owner runs a 427 f-1a set up and puts 1000 rwhp. he runs a 9.67 1/4.

EPP

iTrader: (22)

We've run a 9.12 with an F-1A on my '99 Camaro so far, there's more in it. KP had run into the 8's with his F-1A on his T/A, shown here. http://www.exoticperformanceplus.com...html?item=1109 Bob

trident

Nice Caddy!

So, will the 428ci be fine for the F1R. I can leave the current crank (4.125) in the engine and then with the new 4.125 bore it'll make it a 441ci. If those extra cubes will help turn the F1R, I'll just leave it in and save some money at the same time by not having to buy a new crank.

Whats the deal with belt slippage, is it simply going to happen with a big engine? Wnat can be done to eliminate slippage?

My goal is at least 900 RWHP, over 1,000 will be great. Full time use of race gas is just fine with me, as this will be a street car...but really only driven on weekends or special occassions. It'll be a show car inside and out.

BigRich954RR

iTrader: (1)

Its not the size of the engine that causes belt slip. its the power use to turn the f1R charger. the head unit is maybe using 100 hp or more to compress the air which is all going though the 8rib belt.

trident

ok, sounds like the F1R is a completely unusable supercharger?

so, whats the fix for use on an LSx engine? Zero belt slippage.

Houdini

iTrader: (2)

Cogs... your working with a track only blower.

Gary98Z

iTrader: (9)

If you want zero belt slippage, you're probably going to need a custom cog setup designed. EPP has a preliminary one, but it is not for sale yet. Also, with ac on, you're going to have to figure out how to keep it from overheating in stop and go summer traffic (if there's still enough room to fit the condenser). Have people done it successfully on a street car before? Of course. But, there doesn't seem to be alot of blueprints out there for you to follow. You have to do the R&D on your own. This of course takes alot of time and even more $.

eb02z06

iTrader: (18)

With the right setup the F1A will make 900 rwhp. We've done that with a 402.

trident

now I know why people just say to use a turbo. easier to make tons more power and keep it way streetable.

my mistake I guess. I thought the Procharger was a bolt-on kit and I could use the F1R.

so, is the F1A the biggest sc'er I can use with the bolt-on Procharger kit and keep a/c?

EPP

iTrader: (22)

http://www.exoticperformanceplus.com...Car.php?car=12

I have a lot of pictures at the above link that may help you out. To install an F-1C/F-1R will require modifying the radiator assembly, and you'll end up modifying the bracket to eliminate belt slippage. Bob

trident

how long does it take to modify the radiator assembly and the bracket? so, this isn't just a Procharger kit install using an F1R, with the modifying you mention, right? Its a major project, right?

i'm really needing to keep A/C though and keeping it full interior...and driving it on the road any time I want to. Not a drag car at all.

looks like turbo is the way to go, more power and more drivability.

speedracer5532

iTrader: (8)

I am running a F-1R with my 427 in a F-body with the SDCE setup with no belt slip.

EPP

iTrader: (22)

How much boost are you making? Bob

EPP

iTrader: (22)

Which turbo kit were you thinking of using that keeps the ac, to make the kind of power it sounds like you want to make? Bob

speedracer5532

iTrader: (8)

17.3 lbs with a 4 inch blower pulley and 7.25 SDCE crank pulley and the air filter on.