Gtpguy

My bro and I and are in my car. Running 87 octane (not planning on racing, just driving) mods in sig and still running stock tune. Hitting slow stall wall at every shift. Anyway, we line up at the light, it turns green and from idle I take off and spin waaaaay too much but staying ahead of him. Around 60 he starts creeping up and by 85 he has half a car on me.

At the light we talk and he says he just bought it and the previous owner put in custom headers and tune and is putting down 390 at the rear. He aks what I'm putting down and I say maybe 280. Obviously the car doesn't have 390hp so I'm thinking maybe he mistook 390 at the rear for 3.90 gears in the rear? Nice guy.

Oh well, he beat me all right. Not bad since those cars hang with LS1s. Btw, before the stall and a bogged launch thanks to DRs my car hit multiple 13.9s. I figure I really need a tune and 91 octane of course and without my bro in the car, the race would've been in my favor.

Discuss.

Demon's Camaro

You win some and you lose some. The cars actually run similar times to the lt1 but will pull farther ahead on the top end due to the 4v heads.

Good race though and surprised you posted it. Integrity!!!

Gtpguy

Sorry meant 99+. And they are on par with LS1s. Mach 1s have the same drivetrain, but with a solid rear and put down low low 13's stock.

Demon's Camaro

Nope. Different drivetrain and a Mach1 vs. a 99+ Cobra would pretty much always end in the Mach1s favor(assuming manual). The Cobras can be made quick too but they are mid 13 cars stock which do make them faster than lt1s but a little slower than an LS1.

AL SS590 M6

As an example our totally stock 04 Mach I automatic went 13.74 @ 102ish on a good air track day and my 00 A4 Formy did 13.30s @ 105+ in simular air way back in time when it was completely stock.

Antz97ZNJ

The 99/01 Cobra run good, they dont need much more then a good gear and traction to see 12's...Like posted about most good driver see 13.5's...though some have went lower.

bkpliskin

how many engines has ford used in it's mustangs over the past 10 or 15 years... I know the 4.6 was used since 95 or 96 after they retired the old 5.0 but they made so many variations of the 4.6L

also, can anyone brush me up on some 99-01 cobra facts/specs/stats... I'm not very familiar with them and I'd like to know what I'm up against if I happen to run into one this spring/summer.

Antz97ZNJ

GT
87-95 5.0 Could be made fast cheap.
96-98 215-225hp 2V 4.6 Needs Alot to $$ run w/ LS1's and and a good amount of bolt ons for LT1's.
99-04 260 hp 2v 4.6 Needs alot of $$ to run w/ LS1's. Good Match for LT1's.
05 up 300-315 3V 4.6. Faster then LT1's, still slower then LS1's.

Cobra
94-95 5.0 240 hp Could be made fast cheap.
96-98 4.6 4v 305 hp A stout performer with gears and bolt ons. Slightly faster then Lt1's stock.
99/01 4v 320 hp A stout performer with gears and bolt ons. Mid 13 second car stock w/ a good driver.
03 Supercharged 4V 390 hp Will Kill a LS1 w/ the right driver stock for stock...get just plain nasty w/ mods.

bkpliskin

thanks for the info

one thing stuck out
I was under the impression that the GT's up to 00 or 01 had a 260hp 4.6 and then from 01 or so until the new body style they had 280hp?

can anyone confirm or deny this?

Antz97ZNJ

99-04 (New Edge) GT...all 260 hp.
05 up (s197's) 300hp

bkpliskin

thanks for the clarification, I checked and that was completley accurate, I have no idea why I thought the later ones had 280... no wonder they're so slow...

Gtpguy

Whats the difference between the 2 cars besides the IRS of the cobra and the SRA of the Mach 1? I've been under the impression the motor is exactly the same. I know there was a problem with the 99 Cobra motor, but a recall was issued that fixxed the performance.

Either way, mid low 13s modded and with gears, I kept up with him. So I'm pleased as punch.

Antz97ZNJ

Ther engines are very similar, the Mach's cams, heads and crank are revised. The mach 1 also has more agressive stock gearing (3:55's I believe). The mach has a 3650 tranny as opposed to the Cobra's T5.

Marc 85Z28

What the hell is a "stall wall"

AL SS590 M6

It's an internet coined term for a computer controlled auto trans car with a higher than stock stall speed converter that won't shift to the next gear at WOT because the rpm and mph don't match up with the table info that the comp looks for. It can be tuned out.