The official "How fast is it?" thread...

Bullitt · Nov 6, 2004

first off, i don't have any '05, but i've been drag racing for a LONG time.

a 13.69 @ 99.7 with a porky 3750 lbs works out to roughly 290 HP (this would be a "real wheel" type of figure.

i punched the numbers into MustangWorks.com's analyzer. it's pretty close. my '67 Mustang has run 12.84 @ 106.6 @ 3450 lbs which works out to 326 HP, exactly what the car dynoed at the wheels.

i think the weight of the car is killing it.

351CJ · Nov 6, 2004

Bullitt said:
a 13.69 @ 99.7 with a porky 3750 lbs works out to roughly 290 HP (this would be a "real wheel" type of figure.

i punched the numbers into MustangWorks.com's analyzer. it's pretty close. my '67 Mustang has run 12.84 @ 106.6 @ 3450 lbs which works out to 326 HP, exactly what the car dynoed at the wheels.

i think the weight of the car is killing it.

290 HP at the wheels is pretty damned impressive in my book.

3750 lb is with the driver. Doese your 3450 lb include the driver?

Since you're and old salt at the dragstrip, what do you make of his wife's 14.3 @ 100.7?

351CJ · Nov 6, 2004

Thanks for the report.

At what RPM was Jeremy shifting at?
Was he staying in 3rd for the finish or shifting to 4th?

So far the concensus seems to be that short shifting (<5500 RPM) is how you post the fastest times.

I'm sure that experience will drop the times. It reminds me of an article that 5.0 had with a bone stock 2002 GT and a hot shoe driver (but someone who had NEVER run a 4.6L Mustang before). The first run was a pretty pitiful 15.0 @ 94. By his 5th run he was down to 14.2 @ 98. Then they started tweaking the car, dropping rear tire pressure, upping front tire pressure, icing the intake manifold, pulling off the air silencer, pulling the jack & spare tire out, etc. By the 10th run he was down to 13.7 @ 102

351CJ · Nov 6, 2004

SWTSWNG said:
and there have been people who are driving automatics (like your Lightning). There goes your shift point theory.

Please direct me to the '05 Mustang GT, ATX times. I have not seen a single ATX 1/4 mile time posted. The ONLY ATX time I've seen is M/T's 13.6 @ 99.

bryanzstang · Nov 6, 2004

i just posted, hope it works.

Fast GTO · Nov 6, 2004

bryanzstang said:
i just posted, hope it works.

Think maybe the low humidity and cooler temps is playing a factor?

TomServo92 · Nov 6, 2004

Fast GTO said:
But it is suspect that we havn't seen a mid 13s time even though we have claims that this car puts down 300+HP to the ground.

I'm sorry, but where have you seen claims that it puts down 300+HP to the ground?

FikseGTS · Nov 6, 2004

ok, so here are all the 2005 slips in that database:

2005 Mustang GT Timeslips

no doubt you got a great time and launch.... nice burnout pic too..

BUT, your MPH is only 99.6.... and that was done in 45 degree weather.... without slicks, low 13's are not in the cards..... if you had pulled 105 MPH, then I would say low 13's are there.... but it takes a significant amount of power to go from 100-105....

bryanzstang said:
i just posted, hope it works.

Mustang92 · Nov 6, 2004

He was shifting at 5800 RPM. I can't imagine how anyone would go faster by short shifting the car unless there are serious tractions issues. With a peak at 5200+ RPM you have to shift the car above 5700 or you are just wasting power.

Yes he was finishing in 3rd.

Bill

TomServo92 · Nov 6, 2004

FikseGTS said:
ok, so here are all the 2005 slips in that database:

2005 Mustang GT Timeslips

no doubt you got a great time and launch.... nice burnout pic too..

BUT, your MPH is only 99.6.... and that was done in 45 degree weather.... without slicks, low 13's are not in the cards..... if you had pulled 105 MPH, then I would say low 13's are there.... but it takes a significant amount of power to go from 100-105....

Car & Driver went 102 in an '05 GT. Here's a scan of the article:

http://forums.bradbarnett.net/index.php?showtopic=8455

It'll be interesting to see what Muscle Mustangs & Fast Fords does with the '05.

JonJon · Nov 6, 2004

He was leaving the line at 4k?!?!
wow

Destiny98 · Nov 6, 2004

For perspective, the guy in this thread:

http://forums.stangnet.com/showthread.php?t=514024

was running at one of the better tracks around. For reference, my lid-only LS1 was trapping 109.6 at this track in moderate humidity & temp and at full weight with over a half-tank of gas.

If these cars are struggling to hit 100-101 at SDR, then don't expect much better anywhere else. I was expecting 102-103 with average/competent driving, so I'm disappointed too. The bright side is that they're dipping well into the thirteens with what is looking like a pretty poor power to weight ratio, so these cars should be hell on wheels with a power adder or even the basic bolt-ons.

el1976pinto · Nov 7, 2004

There is nothing wrong with a 13.9 1/4 for a bone stock, brand new 25,000 dollar car. Be glad we live in a society that allows this kind of thing to happen.

Bullitt · Nov 7, 2004

yes, 3450 is with a driver.

typically for the same car, if you spin a bit you'll generally net a higher MPH even if the ET is higher.

a calculator like this is no true determining factor and 290 at the wheels honestly sounds a little high to me. the calculator spits out 2 numbers, average and peak. for the 14.3 run it's an average of 298 (calculated from the MPH) with a peak of 258 (from the ET). the wide spread of these two indicates the full potential of the car isn't being used, hence the slower ET.

for the 13.69 run it's 288 and 290 (peak and average) meaning the car is more or less at it's peak potential.

just for comparison my 12.84 run is 322 and 326 for peak and average.

don't take me saying this is the gospel truth or anything, but it seems to me that it's the weight of the car holding it back, not necessarily the power. esp with stellar 1.9x 60fts.

boxerperson · Nov 7, 2004

OUCH. The GT gained that much weight? That's gotta be 100 pounds more than the last GT. Our poor mustangs are getting bigger and bigger, just like us.

No wonder the cars are getting lower ET's than we expected. It's just like Nissan's 350Z. It's getting low 14's, instead of the high 13's they wanted, because it's over 100 pounds more than Nissan's claim.

This is bad Hardest thing to fix......

CrashOverride01 · Nov 7, 2004

anyone else seen how the PHP '05 GT is in the 12's?

ShelbyMan · Nov 7, 2004

boxerperson said:
OUCH. The GT gained that much weight? That's gotta be 100 pounds more than the last GT. Our poor mustangs are getting bigger and bigger, just like us.

No wonder the cars are getting lower ET's than we expected. It's just like Nissan's 350Z. It's getting low 14's, instead of the high 13's they wanted, because it's over 100 pounds more than Nissan's claim.

This is bad Hardest thing to fix......

According to the 05 Mustang Product Guide:

Yr Curb Eng/Tran Yr Curb Diff
2005 3300# V6 MTX 2004 3070# -230
2005 3345# V6 ATX 2004 3355# + 10
2005 3450# GT MTX 2004 3317# -133
2005 3500# GT ATX 2004 3485# + 15

MineralgreyGT01 · Nov 7, 2004

JonJon said:
He was leaving the line at 4k?!?!
wow

Why not? you have 31 spline axles in there already... You won't break anything on the stock tires.

RandyB · Nov 7, 2004

CrashOverride01 said:
anyone else seen how the PHP '05 GT is in the 12's?

I noticed they ran low 12s@113mph! They removed the Charge Motion Control valves from the lower intake, added a full exhaust and 4.30 gears, and likely reduced some weight as well. Those are just the highlights - probably a lot of other details were not covered. Pretty impressive so far - wonder what it weighs?

bryanzstang · Nov 7, 2004

if this car turned 105, it would run 12's, i only ran the car twice. the two runs came after about 5 runs by my wife, i jumped in it hot and ran the 13.69. this coming weekend i'm going to run it again, the track is only open for two more weeks so i am trying to break 13.5 , then the mods start. btw Jeremy at UPR cut a 1.89 sixty ft, ran a 13.70 @98. so i can still improve on the sixty. i've also noticed a trend, the people that hook hard with sub 2.0 sixty's dont turn as much mph, just like my lx , the better the sixty, the lower the mph, but better et.

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