First time ever at the track! Not too bad...

[Ear Rak]

What kind of power is the car putting down?

 

[Camarokid327]

3.90’s FTW
Perfect for track and no problem on the highway.

3.90's even with a 26" tire? Since the car has a built 4l65e, i'd be maxing 3rd gear out at 127mph. I feel like traction would be none existent on the street then too lol.

What kind of power is the car putting down?

It's around 610/560 to the wheels.

 

[Gone_2022]

That’s a lot to the wheels for a stock bottom end car. Do some small changes it should be a very low 10 second car touching 9s at that power level.

 

[Camarokid327]

That’s a lot to the wheels for a stock bottom end car. Do some small changes it should be a very low 10 second car touching 9s at that power level.

Very true however I'm only pushing 7.5lbs with a 11.2 AFR @ WOT (16* of timing) and running 93 + meth. (50/50 mix) So it's more on the conservative side tune wise. Touching 9's would be badass!

To the drawing board I go for an appropriate driveline and tire/wheel setup! :naughty:

 

[Shibby50]

3.90's even with a 26" tire? Since the car has a built 4l65e, i'd be maxing 3rd gear out at 127mph. I feel like traction would be none existent on the street then too lol.



It's around 610/560 to the wheels.

Any reason you’re not going with a 28? The extra sidewall is always nice.

 

[95SC]

It's around 610/560 to the wheels.

Must be a very happy dyno or the car has a shitty tune . 610rwhp auto Fbody should have been in upper 130's not 125mph .

 

[1quick]

I missed the part about this being a blower car, centrifugal blower? Do you have a converter? You should be able to cut that 60’ way down with blower power and a converter on a good tire

 

[1quick]

When my car was what I’m guessing was mid 600’s to the tire it trapped 130 but it weighs around 4000 lbs

 

[Camarokid327]

Must be a very happy dyno or the car has a shitty tune . 610rwhp auto Fbody should have been in upper 130's not 125mph .

Numbers were on a mustang dyno and tuned my Mike @ Straightline performance, so no, not a happy dyno or shit tune. Ha. 125 isn’t bad for literally my first ever pass and rolling out of the hole. (Left around 1500rpm) Also, it ran such on a 25.5” tire and 3.23 gears.

I missed the part about this being a blower car, centrifugal blower? Do you have a converter? You should be able to cut that 60’ way down with blower power and a converter on a good tire

Correct, it’s a D1sc and I have a Yank PAS 3400 converter. Yeah, a good tire is what’s holding me back.

 

[Ear Rak]

3.90's even with a 26" tire? Since the car has a built 4l65e, i'd be maxing 3rd gear out at 127mph. I feel like traction would be none existent on the street then too lol.



It's around 610/560 to the wheels.

Get it setup and dialed in and i bet it goes 10.30’s-10.50’s no problem. Maybe even bottom 10’s.

 

[95SC]

Numbers were on a mustang dyno and tuned my Mike @ Straightline performance, so no, not a happy dyno or shit tune. Ha. 125 isn’t bad for literally my first ever pass and rolling out of the hole. (Left around 1500rpm) Also, it ran such on a 25.5” tire and 3.23 gears.




Correct, it’s a D1sc and I have a Yank PAS 3400 converter. Yeah, a good tire is what’s holding me back.

Sorry Im not an ass hole here as I have been around cars for years but no matter how you slice it, 125 mph trap speed is shit for an auto car that makes 610rwhp . Its not like you had a 2.4 60' . 1.7 60' is pretty decent , car makes 610rwhp on the dyno but the trap speed is like car that makes 100rhwp less . Here is a slip from my brothers 13 supercharged mustang on 8 psi , it made 600rwhp at this boost level . Similar 60' but look a the trap speed . Trap speed is an indiactior how much usuable power the car makes and uses the power going down the track

 

[95SC]

You wanna go fast ,get rid of your caveman motor and coyote swap that bitch

 

[Camarokid327]

Sorry Im not an ass hole here as I have been around cars for years but no matter how you slice it, 125 mph trap speed is shit for an auto car that makes 610rwhp . Its not like you had a 2.4 60' . 1.7 60' is pretty decent , car makes 610rwhp on the dyno but the trap speed is like car that makes 100rhwp less . Here is a slip from my brothers 13 supercharged mustang on 8 psi , it made 600rwhp at this boost level . Similar 60' but look a the trap speed . Trap speed is an indiactior how much usuable power the car makes and uses the power going down the track

So those are the only two factors that could explain the differences in his and my ET/MPH? Shit tune and/or a happy mustang dyno.

 

[95SC]

So those are the only two facts that could explain the differences in his and my ET/MPH? Shit tune and/or a happy mustang dyno.

What else ? Shitty power band ? I'd think a supercharged pushrod HCI 5.7 LS1 motor has a better power band comparing to a stock supercharged 5.0 Coyote but the track numbers show otherwise .We can't blaim the drivers here as both cars are auto

 

[Yaj Yak]

gearing/tire size

 

[Yaj Yak]

he probably crossed the line in 3rd gear at 2200 rpm making 48 horsepowers

 

[Yaj Yak]

that 600+rwhp dyno was likely at a bazillion RPM at 174 mph in 3rd.

 

[Camarokid327]

What else ? Shitty power band ? I'd think a supercharged pushrod HCI 5.7 LS1 motor has a better power band comparing to a stock supercharged 5.0 Coyote but the track numbers show otherwise .We can't blaim the drivers here as both cars are auto

I might be completely wrong here but I'd say both the powerband difference as in what RPM he is crossing the traps (i.e. gear/tire size) and the weather/DA that day all will come into play.

With my 3.23's and 25.5" tire I was crossing the traps well under the top of 3rd. I don't make 600rwhp until redline at 64-500rpm. So it still has more mph in it. Like everyone else said, the right gears, drag radial and suspension tweaks my ET/MPH will be more accurate compared to my HP numbers.

 

[1quick]

I might be completely wrong here but I'd say both the powerband difference as in what RPM he is crossing the traps (i.e. gear/tire size) and the weather/DA that day all will affect on that.

With my 3.23's and 25.5" tire I was crossing the traps at like 56-700 RPM. I don't make 600rwhp until redline at 64-500rpm. So it still has more mph in it. Like everyone else said, the right gears, drag radial and suspension tweaks my ET/MPH will be more accurate compared to my HP numbers.

when your car hooks hard the trap speed will most likely be slower, his brothers car has 3.15 gears and im sure a taller tire than 25.5, good da wont pick up 10mph

 

[Yaj Yak]

peak horsepower numbers are silly

 

[Yaj Yak]

when your car hooks hard the trap speed will most likely be slower, his brothers car has 3.15 gears and im sure a taller tire than 25.5, good da wont pick up 10mph

could it be the 4 speed vs 6 speed?

that 2nd gear in the stang trans being a 2.43 to 1 is going to keep that car in the power band much better than the 4l60e's at 1.63...

stang:

3.66
2.43
1.36
1.32
1.00
.65

4l60

3.06
1.63
1.0
.70

 

[Camarokid327]

when your car hooks hard the trap speed will most likely be slower, his brothers car has 3.15 gears and im sure a taller tire than 25.5, good da wont pick up 10mph

That makes sense. So then it's fair to say even with a harder launch, better hook (60ft and 1/8th) I'll run a better ET and my mph 'might' be lower...which in turn still proves my point that the car doesn't have a shit tune or happy dyno numbers because it didn't trap faster than 125-130. Serious question, just trying to learn as much as I can!

 

[1quick]

could it be the 4 speed vs 6 speed?

that 2nd gear in the stang trans being a 2.43 to 1 is going to keep that car in the power band much better than the 4l60e's at 1.63...

stang:

3.66
2.43
1.36
1.32
1.00
.65

4l60

3.06
1.63
1.0
.70

his tire size should change that effective gear ratio in his favor, but yeah the cars are very different , coyotes trap higher than your average car I feel, still every 500whp car ive had and ran at the track trapped 123-125

 

[95SC]

when your car hooks hard the trap speed will most likely be slower, his brothers car has 3.15 gears and im sure a taller tire than 25.5, good da wont pick up 10mph

My car might be different because the better 60' I get trap speed is higher

 

[1quick]

peak horsepower numbers are silly

this is why I dont care to dyno my car, I know about what kind of power it takes to run what I do