[gragra73]

An 08 buillitt will do 0-60 and 1/4 mile about 2 tenths faster than a stock 05-08 GT. What is the main factor? The 3.73 gears, the CAI/tune or a combination of both? Does the 3.73 give it 1 tenth and cai/tune the other tenth. Sorry if this has been posted before.

[07stanggt]

yes. My car with the same power package they are putting on the bullitt dynoed and 296rwhp, 316rwtq, ford is rating them at 319 but as you can see it is underated

Add the 3.73 gears, i thought the bullitt had 3.55s but you could be right, and there is the difference. And really those things should make it more of a time difference.

[06RedfireGT]

Another thing is that the magazine drivers has proved to not be the best.

[EfylSetaf]

The Bullitt also has a 6500 redline, some of the reviews I've read of recent owners have said that makes a difference in shift points on the 1/4 mile.

It's got a stiffer suspension than a GT (not as stiff as SGT) and apparently the tires help too. And that dash has gotta be good for at least 2/10ths a second. ; )

It's also got a tiny bit less weight - no spare tire.

[gragra73]

I never thought of the shift point.

[07 procharger]

do the bullits have the same cams as a GT....if so would they not have the same power band? what good would a higher redline do for it? maybee im confused.

[CobraR]

the bullits do have the same cam. they just changed tune to raise the redline

[07 procharger]

so they arent done making power at 6250 ?

[EfylSetaf]

February '08 issue of Mustang 5.0 dynoed the '08 Bullitt. Power peaked at 5,500rpm and tq peaked at 4,400 rpm. At 6,400 rpms the car was only making 10 less hp than peak, but almost 80 less tq than peak.

What they found on the strip in 1/4 mile testing was interesting. The extended redline meant they didn't need to shift into 4th. They posted a best run (the last run, number 9) of 13.48 at 101.79mph. I don't recall environmental variables other than temp being in the 90's.

[07 procharger]

okay...but is it just me or is that not a smart idea...to leave it in third out of its peak hp tq range...rather that power shift to 4th and go? i dunno im just rambleing...dont know why u would want to take your cams so far past its peak?

[EfylSetaf]

I've never drag raced, only power shifted on empty highways... but when you shift up to 4th your rpms drop way below peak output (down to 2k?) check it out next time you shift from near redline from 3rd to 4th. That time spent below peak output doesn't put out as much power as the time spent above peak output.

It's generally understood from the replies I've read on the subject, that if you don't have to shift, you're better off not shifting if time is your goal. An upshift kills time.

[07 procharger]

i like shifting

[IMG]http://i.ytimg.com/vi/4sjTtOCAz_o/default.jpg...

[07stanggt]

Originally Posted by EfylSetaf I've never drag raced, only power shifted on empty highways... but when you shift up to 4th your rpms drop way below peak output (down to 2k?) check it out next time you shift from near redline from 3rd to 4th. That time spent below peak output doesn't put out as much power as the time spent above peak output. It's generally understood from the replies I've read on the subject, that if you don't have to shift, you're better off not shifting if time is your goal. An upshift kills time.

Get 4.10s. when i shift my rpms go from 6000 to 4000 right in the meat of my peak tq

[EfylSetaf]

Argyblargy... damn transmission. I'd love to go out and check those shift points right now... if it wasn't ten feet off the ground with the transmission out of the car. Sniff, sniff. Nice video 07 Procharger, how on earth did you mount the camera?

And yeah, 4.10s are going in immediately after getting a CAI/tuner combo.

[stanglifemike]

Originally Posted by 07 procharger i like shifting

What was your speed when you let off?

[07 procharger]

speedo was wrapped

[stanglifemike]

Originally Posted by 07 procharger speedo was wrapped

Nice

[Casper98GT]

The new 08 Bullitts also have a ECu allowing for higher octane. The spark ignition system allows for a higher octane in it. Some people actually think their cars will respond to a higher octane in a GT but it will not. The Bullitt is actually setup for higher octane and you will actually gain power from using it.

[gragra73]

It seems like it is a combination of many factors, but not a single one i.e. intake, gears, advanced timing make a big difference.

[07 procharger]

Originally Posted by Casper98GT The new 08 Bullitts also have a ECu allowing for higher octane. The spark ignition system allows for a higher octane in it. Some people actually think their cars will respond to a higher octane in a GT but it will not. The Bullitt is actually setup for higher octane and you will actually gain power from using it.

what does the ecu do ....advance the global spark to acomodate the higher octane?