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Drag Strip Video - Whipple Supercharged 2017 Dodge Charger R/T

47K views 44 replies 11 participants last post by  fumanchu182 
#1 · (Edited)
Thought I'd share a quick video of my car at the Mopar mecca this past weekend - aka the Modern Street HEMI Shootout finale at Atco Dragway.

I bought this car pre-owned 1 year ago last week and have been adding the goods to it ever since. Whipple installed about 6-7 months ago. This run was against a heavily modified Trackhawk in a bracket class. I ran consistent 12.2s @ 115 all day. For comparison, there was a stock Charger R/T running 13.6s



Current Performance Mods:


  • Stage 2 Whipple 2.9L - 10lbs of boost, 5.7L stock bottom end (Install by Tune Time Performance)
  • ECM Tune - Mike Doban (OST Dyno)
  • TCM Tune - Troy Ding (Ding's Racing)
  • 3.09 LSD
  • Mickey Thompson ET Street R Drag Radials - 305R45/18

    Wheel Car Tire Land vehicle Vehicle
 
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#3 ·
Interesting, I ran against an 11-14 rt charger , he was running 11.3-5 all day with a 5.7 procharger. This was Saturday at atco. I’m surprised you’re not mid-deep 11’s.


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#4 · (Edited)
Interesting, I ran against an 11-14 rt charger , he was running 11.3-5 all day with a 5.7 procharger. This was Saturday at atco. I'm surprised you're not mid-deep 11's.

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Don't know who you're referring to but he definitely wasn't stock with only a procharger. Those are stock Hellcat times. Think about it - a 370hp car, that runs 13.6 stock, can't run 2 seconds quicker through a 1/4 mile with just adding ~170hp.

I could shave another .3-.4 if I were running race gas but, on this current setup, my consistent 12.2s are just about as great as I could have hoped for.

When I get this setup to around 14lbs of boost, then mid 11s should be possible. Gotta forge first.
 
#9 ·
Nice run OP. Have always wanted to go out there for racing but AZ is a far drive lol.

I ran a best to date of 11.47 @120 in 900DA in my 13’ challenger that’s a cam/head/100shot car. Stock bottom end. Made 460/500 the day before that run. Threw a 150 in it and made 530/540. Shooting for a 10 slip this Friday but DA is gonna be a little high.


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#12 ·
Nice run OP. Have always wanted to go out there for racing but AZ is a far drive lol.

I ran a best to date of 11.47 @120 in 900DA in my 13' challenger that's a cam/head/100shot car. Stock bottom end. Made 460/500 the day before that run. Threw a 150 in it and made 530/540. Shooting for a 10 slip this Friday but DA is gonna be a little high.

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Thanks brother. Really can't see how you could run those times with that much power but certainly happy for you. That speed in that power to weight ratio just doesn't add up to me.

I run low 11's with just a blower. Banged out a 11.283 at atco on Saturday. Otherwise ran 11.4' all day.

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Just as confused here. You have just a blower (and presumably a tire) on a 5.7 and run low 11s??? I have zero desire to be questioning anyone here, but this just seems impossible to me. Look up Hellcat 1/4 mile times (or better yet, watch them at the track) on Hellcat.org or wherever else and you'll see everyone running 11.1-11.8 on average. That's 707 crank hp running the times you guys are claiming. What am I missing? Even a professional drag racer wouldn't shave more than .3 off what I can run.

The Sunday before last my 2006 5.7 R/T ran a 12.5 at only 107 mph. 10 lbs also- on 235 pizza cutters. I think dcmx5 could get high 11s.
^This makes sense
 
#13 · (Edited)
I'm not trying to bust anyone's balls here, just trying to get us all on the same sheet of music.

707 hp in a Hellcat is a magic number that was created under perfect conditions, in a lab, perfect temp and corrected for perfect DA.

In the real world they MIGHT be putting 640-650 to the wheels and that's pushing it, hard. (My buddy's bone stock '16 Challenger HC only made 653hp/598 torque max at the wheels)

Combine that with a street tuned suspension and the "average" driver and you'll see the times aren't hard to beat with less power and a better set up.

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#14 ·
^ Well this is what I'm saying. Those numbers are pushing it on the stingy Mustang dynos I'm used to. A stock HC puts down *only* 90-100 more rwhp than my current setup on the same dyno, so how am I supposed to be running similar times with that deficit? Or, my real question, how are some of you claiming to do that?

Understand this is purely a level headed conversation to me. In my head, consistent 12.2s @ 115mph with *just* a blown 5.7L on a stock bottom end was about as good as I could have hoped for, running on 93 and with no weight reduction. I'm surprised to hear people feel you could expect to gain almost 2 full seconds off a stock car with just a blower and tires through a 1/4 mile.
 
#17 ·
^ Well this is what I'm saying. Those numbers are pushing it on the stingy Mustang dynos I'm used to. A stock HC puts down *only* 90-100 more rwhp than my current setup on the same dyno, so how am I supposed to be running similar times with that deficit? Or, my real question, how are some of you claiming to do that?

Understand this is purely a level headed conversation to me. In my head, consistent 12.2s @ 115mph with *just* a blown 5.7L on a stock bottom end was about as good as I could have hoped for, running on 93 and with no weight reduction. I'm surprised to hear people feel you could expect to gain almost 2 full seconds off a stock car with just a blower and tires through a 1/4 mile.
I'm not claiming anything, this is my slip(915) from the exact same day and same track as the video posted. My car is a 16 charger scatpack, NA426 with a 3.70 gear and 29" MT R's, no skinnies. I did pull passenger and rear seats(-110lbs). She dynos ~520/520.


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#16 ·
They're not claiming to do it, they're doing it with the time slips for proof.

There are MANY factors involved, track prep, air quality, etc. The biggest one though is the right foot. That .5-1.0 seconds of initial movement makes a world of difference as to whether you launch like a rocket or blow the tires off.

The Hellcat is a great car, but it isn't the end all be all of drag racing and not a fair comparison to any 5.7 or 6.4 for that matter.

A stock hellcat is roughly 200lbs heaver than a stock 5.7 R/T and that makes a lot more difference than you may be giving credit to.

My build isn't quite a stock bottom ended 5.7 but I'm aiming for Demon beating ET's with a full interior and all the options. Drive to the track, swap rear wheels/tires, rip off a high 9- low 10 pass, swap tires back and drive home. Lol

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#19 · (Edited)
Great slip, Ronan, and nice build. Sorry I didn't meet you out there. Your build and mine don't compare by any stretch of the imagination. I'm trying to learn more about stock bottom end 5.7Ls running in the mid 11s to understand how they're getting there.

If your dyno numbers are from a properly calibrated Mustang dyno you have about 60whp on me, and likely a much harder pulling low end, so it doesn't surprise me at all that you (especially with the 3.70 and weight reduction) would be .8 quicker than my current setup through the 1/4. That's where I would expect you to be with that setup.

If you check out the other, longer, youtube video I posted of a few of my other runs, I have a bunch of pictures in it - I may have gotten your car.
 
#27 ·
renfrick runs a SRT.
 
#30 ·
Big congrats on the recent pass. Great build and thank you for sharing.

Are you still on your stock differential and axles? I'm still doing my homework but am trying to determine whether my drivetrain could handle a 2800 stall when I'm making my full boost just over that RPM.
 
#31 ·
It got a getrag conversion years ago. Had 3.91s in it with 226 stock axles and now has 4.10s in the getrag with same axles. It does have a one piece driveshaft.

Spraying a 150 shot hits hard now so I don't spray till around 3500. Car is going to get a 4000 stall here shortly, should push 60' down from nitrous out of the whole and 4000 also matches my NA curve.

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#36 ·
Times seem rather slow for the boost the op is running. Pre eagle motor with heads and cam and edelbrock supercharger @ 7lbs, 523 whp and 512 torque last year and ran 10.96 @ 125. This year a bit better with a 10.84. This is with stock trans and converter with 3.06 getrag stock bottom end.
 
#38 · (Edited)
Still fascinated that a few people feel this way.. Stock hellcats w/ 707 crank hp run low to mid 11s, with all the track oriented bells and whistles they come with. I am pushing 600 crank hp at the most (probably more like 560-570), without those bells and whistles. Why/how should I be running similar times?

Your heads and cam are definitely putting in awesome work for you, and obviously the weight reduction is another major contributor to your slips.

At full weight (nothing removed, complete leather seats), my stock 5.7 on ~9/10lbs is right where I would have expected it - about 1.5 seconds quicker through the 1/4 than a stock 5.7. Picking up 2 full seconds+ off blower only just doesn't happen on these cars. (a stock 5.7 was running 13.6 @ 102mph at Atco the day I was running 12.2 @ 115)
 
#39 ·
Personally I think this is where your problem lies. I'm not bashing any of the tuners but I've used them in the past and now I use AJ Maybe start there. Your car at 10 psi should be running mid 11's. I could be wrong "what do I know". Not much I guess. We all have our favorite tuners
  • Stage 2 Whipple 2.9L - 10lbs of boost, 5.7L stock bottom end (Install by Tune Time Performance)
  • ECM Tune - Mike Doban (OST Dyno)
  • TCM Tune - Troy Ding (Ding's Racing)
  • 3.09 LSD
  • Mickey Thompson ET Street R Drag Radials - 305R45/18

    Sent from my iPhone using Tapatalk
 
#41 ·
Im tellin ya, it aint all about the power.

Rear gears and stall are everything.

Suspension on the pre 09 cars is pretty loose as well so it’s decent stock for drag racing. My 13’ challenger was pretty tight and didn’t like to squat or lift the front.

Wheel and tire weight reduction is also very helpful.

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#45 ·
Good prep, horrible DA in MD. No weight savings. Even have a huge sub in the trunk. I just spent everybweekend learning how to launch the car.

And yes I learned how to launch. Power brake at 1800 to get the converter to lock up. Traction control is turned off too.

Sent from mobile, tapatalk sucks...
 
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