jt76

iTrader: (10)

Got a run in with my friend's 2003 Cobra tonight. His mods are

F1A Cog Drive Procharger
Custom front mount IC setup
LT headers/catless H/ Catback
Solid rear w/4.11 gears
running 100 oct tune @ 23psi - 640rwhp

my car: 2000 Trans Am
TFS 215 heads milled to 58cc
231/237 cam
lt headers/catless y/ catback
FAST 90 intake w/lid and chrs1313 ram air
9" rear w/3.73's
Substantial weight reduction (corbeau seats, no back seats, no HVAC, a few other odds and ends)

2nd gear roll:
http://www.youtube.com/watch?v=wdq5i...el_video_title

1st gear roll:
http://www.youtube.com/watch?v=d494z...el_video_title

I think i held up pretty well.. we are having a rematch next week, but i a going to be on a 100 or 150 shot next time . My friend is letting me use my old nitrous kit that i sold to him. I just picked up a KYTP turbo kit off of sluggish on here, so i plan on a new motor this winter anyway but hey it may hold!

GotHemi?

Id say you did damn well!!...How fast were yall running them up to?

BayArea ws6

I agree^^That 100 shot should do the trick ,either way you did well against that cobra!It sounded crazy and your car sound's nice too!

BOBS99SS

iTrader: (2)

major props man , that was a good death,cobra sounded killer,your car sounds good to, i see no reason why your car wouldnt last on a 100,150 shot,good runs though ,what did you guys shut down at

Marc 85Z28

iTrader: (8)

That Cobra is a joke.

Camaro_94

iTrader: (5)

Good races! I thought he would have beat you a lot worse. Your car runs damn good!

ScreaminRedZ

iTrader: (3)

Good races!

Why are a bunch of guys going with centrifugal blowers instead of twin screw blowers? They never seem to run as well. Are they trying to prevent the heat soak associated with the other blowers? Just curious.

ULTIMATEORANGESS

iTrader: (4)

i expected you to hang for a little while or get a short lead then get walked. that thing is just making too much power. your best chance is from a stop.



now once you add nitrous things are going to be different.

corysmach1

He was pulling very hard up top but for the power should have beaten you a lot worse.

Frans96SS

iTrader: (15)

An F1 on an 03 cobra with 23PSI and 100 octane should make AT LEAST 800+... 640 is beyond terrible.

gregsss

I agree

Camaro Z

iTrader: (5)

I was wondering the same. The main benefit of the F1 is they don't have the instant hit of 600-700 ft lbs of torque and are better for traction. The F1 is definitely not the cheapest route I don't think. They sound pretty wicked though.

BayAreaSS

iTrader: (10)

I agree

Stopsign32v

iTrader: (1)

Not everyone can have a car as fast as yours

Stopsign32v

iTrader: (1)

Centri blowers aren't a bad idea but on a small 4.6L V8 it takes the correct setup to run good. One of the main reasons is because unlike anything else they make max boost at redline.

Here are a couple of bad ideas with a centri blower setups on a 4.6L...

-low compression
-tall gear ratio
-larger than necessary blower

Now IMO I'd be willing to bet this Cobra had all of the above. I am not a fan of the F1 setup on 03 Cobras.

Marc 85Z28

iTrader: (8)

I like Stopsign32v. better, he's more intelligent and less annoying.

afastm6

iTrader: (1)

good death it be a different game with u on spray tho

Gaunt

iTrader: (11)

Good lord that cobra is a roach for only making 640 with an F1A on 100 octane

SilverSS

iTrader: (30)

Puny little low comp 4.6's have no bottom end with a Procharger in that heavy pig in a street car. Should have gone KB. High power centrifugals blowers are for the LSX big boys that have bottom end grunt.

Edit: looks like that cobra would have to put 10 bus lengths on you if the race was longer.

brians91formula

iTrader: (12)

Your car seems to run really strong. I have just about the same setup.

Any track time with current setup ?