Hellcat ran a 10.48
#21
I don't see how it's even remotely possible that a stock hellcat trapped 106mph in the 1/8 mile. Drag radials and race gas don't do that. And if everyone of these "regular" Hellcats in this exact same DA are trapping 126-127 I would be pissed that someone how one guy bought one that was trapping 133 on the same day, same track LOL.
#23
Safety Car
Actually, there's more to the benifits of running certain race fuels beyond the octane rating. MS109 is an oxygenated unleaded race fuel, with a stoic value of 13.41 (IIRC), and a fast burn rate. If the Dodge ECU runs in a pig rich A/F in open loop WOT operation like our car's do, running straight MS109 would lean the A/F a bit, as well and eliminate KR, and burns pretty quickly.
#24
-1000 ft DA, excellent weather. Same weather we had when the Hellcat at our track day was trapping 126 mph. There was another Hellcat nearly copying that trap speed, at that track, doing 126 mph.
Using a simple weight/mph calculator http://www.wallaceracing.com/et-hp-mph.php
4400 lbs + driver
126 mph = 750 hp
133 mph = 875 hp
You don't pick up 125 hp from race gas. Maybe some other "gas"?
Using a simple weight/mph calculator http://www.wallaceracing.com/et-hp-mph.php
4400 lbs + driver
126 mph = 750 hp
133 mph = 875 hp
You don't pick up 125 hp from race gas. Maybe some other "gas"?
this is what I posted in the other thread....
"You can also use this engine tuning calculator to see what effect DA has on engine output.
Engine Tuning Calculator - using dew point
At the reported track conditions, this particular car was making roughly 7% more power than rated power. For a bhp rating of 707 BHP, that's an additional 49.49 BHP simply related to weather conditions. Add the potentially leaning out of the factory A/F ratio settings, you could conceivably be looking at another 30+. That would be giving you somewhere around 780 BHP.
And, guess what ? If you take the white cars 11.01 ET, 126MPH trap, and a race weight of driver and car at 4650 lbs, you get 707.30 BHP ....pretty much what Dodge is claiming.
The 10.42@133 for the same vehicle ? approximately 833 BHP
But I'll conceide that I wasn't there and I don't own a Hellcat, so anything is possible.
Anyway you cut it, a 10.4@133 is flying for a street car, so, much respect !!!"
#25
I don't see how it's even remotely possible that a stock hellcat trapped 106mph in the 1/8 mile. Drag radials and race gas don't do that. And if everyone of these "regular" Hellcats in this exact same DA are trapping 126-127 I would be pissed that someone how one guy bought one that was trapping 133 on the same day, same track LOL.
None the less, the numbers are impressive...however they were achieved
#26
You are correct, I didn't consider the oxygenated race fuels available..... if the conditions you cite do exist then it would most certainly be helpful in achieving some additional power.... still not another 7mph I'm afraid. Hence my earlier statement that I believe it's a factor of many different things being perfect weather, a strong running car, great track prep and possibility of running race gas such as MS109 and the car being able to take advantage of it. 10.48@133mph is definitely a huge accomplishment with what would be considered a stock car on a tire..... hence the reason I'm looking to see some additional information here as it's not a typical result.
While the 133 stands out, what's even more glaring to me is the 106 MPH 1/8 mile split. Something is going on here.
#27
Safety Car
By comparison, my '06 Viper makes 850 rwhp on boost w/ 93 octane. On C16 race fuel, with added timing, it makes about 900 rwhp.
So, I'm only picking up 50 rwhp with a tune + race gas. VP109 isn't nearly as good as C16. I wish I could pick up 125 hp from just adding VP109 to my tank. LOLOLOL
Oh, and I make 1250 rwhp on the nitrous
So, I'm only picking up 50 rwhp with a tune + race gas. VP109 isn't nearly as good as C16. I wish I could pick up 125 hp from just adding VP109 to my tank. LOLOLOL
Oh, and I make 1250 rwhp on the nitrous
#28
Also when where were running a bunch of stock Vipers and Z06's in very similar DA last weekend the trap speeds of all of the cars regardless of drag radials were still very close. Only a 2mph spread between multiple cars all day on multiple runs. So if a stock Hellcat was running 126mph there that day, and they said that both of them were running 109, than I would expect 129 maybe as the highest possible swing in MPH between the two?
#29
Agree I can't wrap my head around that, my modded Gen V Viper just ran 10.84@134.9 and I only trapped 102 in the 1/8th on that pass.
Also when where were running a bunch of stock Vipers and Z06's in very similar DA last weekend the trap speeds of all of the cars regardless of drag radials were still very close. Only a 2mph spread between multiple cars all day on multiple runs. So if a stock Hellcat was running 126mph there that day, and they said that both of them were running 109, than I would expect 129 maybe as the highest possible swing in MPH between the two?
Also when where were running a bunch of stock Vipers and Z06's in very similar DA last weekend the trap speeds of all of the cars regardless of drag radials were still very close. Only a 2mph spread between multiple cars all day on multiple runs. So if a stock Hellcat was running 126mph there that day, and they said that both of them were running 109, than I would expect 129 maybe as the highest possible swing in MPH between the two?
Modded now, I run 10.5@131 at 1600+ ASL on 91 pump gas, with 1/8 traps around 102-104.
#30
Safety Car
I have not seen the slips for this car nor have I reviewed the slips for the other Hellcats that have trapped in the 126-127mph range. But I would imagine you could see a better 1/8 mile trap from a car with gobs of low end torque and less than perfect aerodynamics compared to the Viper. While the viper has good low end it's not as good as the supercharged Hellcat and it has longer gearing from what I see. The Viper is obviously much more "slippery" in the aerodynamics department. I could easily see the Viper picking up more MPH in the second half of the 1320 vs. the Hellcat.
#31
Safety Car
And for the record...... I'm not trying to bolster the results for this car in anyway. I'm still quite suspect myself as the trap at 133mph is very untypical. I just wanted to point out what could possibly be a reason for the higher 1/8 mile trap vs. the Viper that trapped a similar 1/4 mph.
#32
That's true, who knows. My run was on a very soft 60' so maybe there coming out of the whole harder would have increased the 1/8 mile traps.
I have not seen the slips for this car nor have I reviewed the slips for the other Hellcats that have trapped in the 126-127mph range. But I would imagine you could see a better 1/8 mile trap from a car with gobs of low end torque and less than perfect aerodynamics compared to the Viper. While the viper has good low end it's not as good as the supercharged Hellcat and it has longer gearing from what I see. The Viper is obviously much more "slippery" in the aerodynamics department. I could easily see the Viper picking up more MPH in the second half of the 1320 vs. the Hellcat.
#33
Melting Slicks
LOL...Just as I thought...BS!
#36
#37
Also I read on Challenger talk these cars were heading back to the track yesterday, I'm guessing that didn't happen, and no there still is no video of these passes.
It was also posted that there was nitrous on the car but that the owner said not to use it? That was on the Challenger forum.
#38
#39
Melting Slicks
We did have a Z06, two actually that were on drag radials, including one (silver one) that started on street tires. His trap speeds went from 127 to 128mph even though his ET's dropped from 11.9 to 10.9. Also my viper traps on drag radials were right in line with the power I was making, no one jumped 6mph in the 1/4 going from street tires to drag radials.
Also I read on Challenger talk these cars were heading back to the track yesterday, I'm guessing that didn't happen, and no there still is no video of these passes.
It got rained out...Now it's on for 1/16/15
It was also posted that there was nitrous on the car but that the owner said not to use it? That was on the Challenger forum.
This is true about the nitrous. They wanted to try to get it into the 9's. The owner told them no way. He already lost a driveshaft with stock power....lol
Also I read on Challenger talk these cars were heading back to the track yesterday, I'm guessing that didn't happen, and no there still is no video of these passes.
It got rained out...Now it's on for 1/16/15
It was also posted that there was nitrous on the car but that the owner said not to use it? That was on the Challenger forum.
This is true about the nitrous. They wanted to try to get it into the 9's. The owner told them no way. He already lost a driveshaft with stock power....lol
Last edited by Hemi Dave; 01-10-2015 at 11:43 AM.
#40
Melting Slicks