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Head-to-Head Comparison: 2008 Shelby GT500 Mustang vs. 2008 Challenger SRT8

Old Mar 5, 2008 | 01:55 PM
  #41  
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Default RE: Head-to-Head Comparison: 2008 Shelby GT500 Mustang vs. 2008 Challenger SRT8


ORIGINAL: kevin2323

yea i didnt seem to believe the dyno sheet either... but everyone was like wow im glad to see a stang finally dynoing over 300 to the wheels stock and i was like what! how is the shelby dynoing with such bad numbers. maybe something happened.
I would have to agree with you. From what I have personally seen they are in the 410 to 420 range at the tires totally stock. My Terminator was 367 with the 4.6 where the Shelby uses the 5.4 and a more efficient supercharger. The one big gripe I had with the Shelby was one RLSH700 brought up though. I bought my Cobra for 33K out the door. The Shelby is a full 10K above that(sticker prices). Not sure about such a huge price jump, definitely paying for Shelby's name. The big issue on the Challenger is going to be getting a car for MSRP or less(at least early on). It's been good to see some people have been able to get them at MSRP. Hopefully with the full line up in the Fall prices will be realistic. Back to performance; the Challenger won't disappoint, I'm confident of that. A fella on the Moparts board has an SRT-8 Chrger that he did some bolt-ons to and ran a 12.20@113.8mph. Bolt ons were: Headers(long tube), full exhaust, a PCM tune and CAI. That was worth around 50hp. I laugh when I read the ads saying the Challenger will run the quarter in less than 14 sec. Sure it will, 12.80 is less than 14, lol. The stick car I seen had the trac pak on it with the 3.92 axle. If an automatic Charger will run a 12.9X under ideal conditions, the Challenger advantages are: Slightly lower weight, stick car means less HP loss through the drivetrain plus the gearing is better than the auto car(for drag racing anyway). The new 5.7 will not disappoint either. The 5.7 car should fully be the equal or quicker(most likely) than a GT Mustang.
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Old Mar 5, 2008 | 02:52 PM
  #42  
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Default RE: Head-to-Head Comparison: 2008 Shelby GT500 Mustang vs. 2008 Challenger SRT8

yea your definately paying for the shelby name which is sad to see. FINALLY someone who understands what these engines and cars can do, minor bolt ons can bring this car frim magazines stating less than 14 on the 1/4th and 0-60 in "under 5 sec" lol. this car is underated and is a beast. the six speed will blow everything out of the water. youre gonna see a big difference from the 5 speed mercedes transmission to the 6 speed manual. its funny because i have an 08 on order at msrp, despite what people find out if you work at it you can find a dealer with one for msrp. i also have the automatic which i will love since miami traffic is terrible and people here do not know what turn signals are but they do know what road rage is lol. one of the main reasons i wanted the challenger was because with mere bolt ons it can keep up with a stock shelby.. oh and the shelby is already supercharged and last time i checked you cant supercharge a supercharger. im not hating on the shelby, i love the car just too pricey. what people dont understand is that there hasnt really been much out aftermarket wise for the srt8s. i have been following some stuff up on the other forums and it looks like great timing for us who bought an 08. there are about 4-5 companys testing turbos and superchargers as we speak that should be out by mid summer, some with 3 year warrantys and everything. theres even testing going on to finish a supercharger setup for the 426 stroker kit for our hemis. the challenger couldnt have come at a better time.

btw.... terminators are sick.
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Old Mar 5, 2008 | 07:09 PM
  #43  
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Default RE: Head-to-Head Comparison: 2008 Shelby GT500 Mustang vs. 2008 Challenger SRT8

I will find every bolt on imaginable and put it on. Depending on what headers are on it, I may replace them too..
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Old Mar 5, 2008 | 08:47 PM
  #44  
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Default RE: Head-to-Head Comparison: 2008 Shelby GT500 Mustang vs. 2008 Challenger SRT8

Mopar Performance is working on several upgrades for the car as this is written. It's looking like sometime in the Fall we should see them. There will be some bolt ons, don't worry about that :-) For a naturally aspirated car and at 4100+ pds, the LC/LX cars run very well. A manual trans SRT-8 Challenger with bolt ons like I described for that Charger would get you knocking on the doorstep of the 11 sec zone. I did forget to mention the Charger was wearing some stickier skins but not sure if they were Drag Radials or slicks. Thanks for the comment on the Terminator. It really is a fun car and there weren't too many of them made in the 2 years they were out. I kept my window sticker and brochures, etc. I will do the same with my Challenger when I pick it up. I am planning to go to to the dealer in my '71 when I take delivery. Want to get some pics and take my boy. He came with me when I picked up the Cobra and I took some pics of him with the car. He was 5 then and it's already been 5 years. I just hope he grows up and likes these cars so when I get old he can take them, lol.
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Old Mar 5, 2008 | 09:34 PM
  #45  
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Default RE: Head-to-Head Comparison: 2008 Shelby GT500 Mustang vs. 2008 Challenger SRT8

apples to apples??? since when can you compare supercharged to a n/a??? and how in the holy hell is it possible for a 2 door challenger to weigh as much as a 4 door charger??? i don't get it. Does anyone have that pic floating around of the "icharger" twin screw supercharger??? it was on some silver srt8 300 (i think)
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Old Mar 5, 2008 | 09:46 PM
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Default RE: Head-to-Head Comparison: 2008 Shelby GT500 Mustang vs. 2008 Challenger SRT8

im to lazy to explain this late at night.... ill tell ya tom....


j/k

the challenger weighs as much because its built on a midfied version of the lx which weighs alot.

and yes the i charger is not out yet but it should be by summer or fall.
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Old Mar 5, 2008 | 11:37 PM
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Default RE: Head-to-Head Comparison: 2008 Shelby GT500 Mustang vs. 2008 Challenger SRT8

I bought the April Motor Trend mag. and it has a nice picture of the 2008 Challenger. But that really is all. They were not able to test it due to weather conditions. They were able to test an R/T Charger and a Pontiac G8 GT. I really would like someone to tell me why they would use a 5.7 Charger against a 6.0 G8. They use price as the factor and then they test performance. Seems to me an SRT-8 6.1 would be a better comparison. But they state that the price of the R/T is still more than that of the G8. OK I'll give you that... but if you want to test top of the line with top of the line and a 6.0 against a 6.1 would be more fair. I guess if you want the results to add up to what you want them to be then that is the road you go down. I'm a car guy who thinks you should make it as fair as possible and test auto vs auto, standard vs standard. I've seen MT test multi dollar Ferraris and Porches against Vettes and Vipers. Then it seemed like a fair performance shoot out. Forget $$$$ they wanted a fair fight. But then when it suits them they use the $$$$ as a fair way to test two unequal cars. Sheesh guys, it a'int that hard and you should'nt make it that hard. I feel they don't want to make it fair. As far as pressure vs NA. If you got to go with boost... then test it against something with boost. I'm glad Dodge makes the power without resulting to blowers. Leave that to the folks to add. I find it weak to have to resort to boosting a Stock V-8 to keep up with other brands NA. GM is doing this with the Vette to keep up with the Viper and Ford did it sooner with the 4.6 and the 5.4. I-4s and I-6s, V-6s are fine from the factory boosted. But when you have to boost your V-8s to keep up[&o] just sad. Yeah they haul the mail, but in my eyes, they blinked first. Some will disagree with me and thats fine, but thanks Dodge for keeping your eyes open longer.
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Old Mar 6, 2008 | 05:48 AM
  #48  
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Default RE: Head-to-Head Comparison: 2008 Shelby GT500 Mustang vs. 2008 Challenger SRT8


ORIGINAL: lear4406

I bought the April Motor Trend mag. and it has a nice picture of the 2008 Challenger. But that really is all. They were not able to test it due to weather conditions. They were able to test an R/T Charger and a Pontiac G8 GT. I really would like someone to tell me why they would use a 5.7 Charger against a 6.0 G8. They use price as the factor and then they test performance. Seems to me an SRT-8 6.1 would be a better comparison. But they state that the price of the R/T is still more than that of the G8. OK I'll give you that... but if you want to test top of the line with top of the line and a 6.0 against a 6.1 would be more fair. I guess if you want the results to add up to what you want them to be then that is the road you go down. I'm a car guy who thinks you should make it as fair as possible and test auto vs auto, standard vs standard. I've seen MT test multi dollar Ferraris and Porches against Vettes and Vipers. Then it seemed like a fair performance shoot out. Forget $$$$ they wanted a fair fight. But then when it suits them they use the $$$$ as a fair way to test two unequal cars. Sheesh guys, it a'int that hard and you should'nt make it that hard. I feel they don't want to make it fair. As far as pressure vs NA. If you got to go with boost... then test it against something with boost. I'm glad Dodge makes the power without resulting to blowers. Leave that to the folks to add. I find it weak to have to resort to boosting a Stock V-8 to keep up with other brands NA. GM is doing this with the Vette to keep up with the Viper and Ford did it sooner with the 4.6 and the 5.4. I-4s and I-6s, V-6s are fine from the factory boosted. But when you have to boost your V-8s to keep up[&o] just sad. Yeah they haul the mail, but in my eyes, they blinked first. Some will disagree with me and thats fine, but thanks Dodge for keeping your eyes open longer.

Playing Devil's advocate for a moment.........The engines that are using the superchargers are much smaller in displacement than the NA aspirated engines of the vehicles they are competing against so it's not as unequal as it first appears. Displacement in itself is a power adder of sorts. The Viper uses a 510 cubic inch V-10. The LS-9 in the Corvette is about 380 Cubic inches. 130 cubes is a lot of ground to make up for sure. It really depends on how you like your power. The main advantage of boosting an engine(turbo or supercharge) is to keep the smaller displacement for better fuel economy but have the punch of a larger motor when needed. I would say in the very near future the big inch naturally aspirated engines will become the exception and you will see a larger movement to turbo's and superchargers. Check out the new Ecotech engines Ford is working on. There was also a recent article where a Chevy engineer was stating the Corvettes top engines would drop down in displacement closer to 5.0 liters and use a power adder. This was all in response to the latest CAFE regulations passing. Anyway, I wouldn't consider it lame, just another way of getting power.
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Old Mar 6, 2008 | 07:04 AM
  #49  
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Default RE: Head-to-Head Comparison: 2008 Shelby GT500 Mustang vs. 2008 Challenger SRT8


ORIGINAL: lear4406

I bought the April Motor Trend mag. and it has a nice picture of the 2008 Challenger. But that really is all. They were not able to test it due to weather conditions. They were able to test an R/T Charger and a Pontiac G8 GT. I really would like someone to tell me why they would use a 5.7 Charger against a 6.0 G8. They use price as the factor and then they test performance. Seems to me an SRT-8 6.1 would be a better comparison. But they state that the price of the R/T is still more than that of the G8. OK I'll give you that... but if you want to test top of the line with top of the line and a 6.0 against a 6.1 would be more fair. I guess if you want the results to add up to what you want them to be then that is the road you go down. I'm a car guy who thinks you should make it as fair as possible and test auto vs auto, standard vs standard. I've seen MT test multi dollar Ferraris and Porches against Vettes and Vipers. Then it seemed like a fair performance shoot out. Forget $$$$ they wanted a fair fight. But then when it suits them they use the $$$$ as a fair way to test two unequal cars. Sheesh guys, it a'int that hard and you should'nt make it that hard. I feel they don't want to make it fair. As far as pressure vs NA. If you got to go with boost... then test it against something with boost. I'm glad Dodge makes the power without resulting to blowers. Leave that to the folks to add. I find it weak to have to resort to boosting a Stock V-8 to keep up with other brands NA. GM is doing this with the Vette to keep up with the Viper and Ford did it sooner with the 4.6 and the 5.4. I-4s and I-6s, V-6s are fine from the factory boosted. But when you have to boost your V-8s to keep up[&o] just sad. Yeah they haul the mail, but in my eyes, they blinked first. Some will disagree with me and thats fine, but thanks Dodge for keeping your eyes open longer.
I'm sorry lear4406, but the Charger R/T to G8 GT is a far more logical comparison than a SRT8 would be. Although the displacement is closer together, the 6.0L is the L76 version instead of the LS2, this version has Active Fuel Management, this is not a 100% performance focused engine like the SRT-8's engine is. It was built to be fast yet practical just like the 5.7L is with its MDS. The hp difference is less between the two models. The Charger R/T produces 340-350hp & 390 ft-lbs of tq which is much closer to the G8's 361hp & 386ft-lbs of tq than the 6.1L's 425hp & 420ft-lbs of tq. I may not have read the article, but I'm guessing that from the sound of things, the G8 won. Don't be surprised by this, the Charger's handicap is the transmission and that is GM's trump card. As I have said many times the MB designed transmission has done little to prove it is more effective than Chrysler built 4-speeds, and the thing that GM is probably the best at making out of pretty much all manufactures in the category of performance is their transmissions. The transmission is the issue here. Also, remember that the G8 does not come standard with some options such as leather so that explains some of the price difference.

(I have to go right now and I'll update this with further analysis)
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Old Mar 6, 2008 | 05:21 PM
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Default RE: Head-to-Head Comparison: 2008 Shelby GT500 Mustang vs. 2008 Challenger SRT8

I actually own a turbo car and yes it needs boost to run the way it does. Its an I-4 at 2.6 liters it needs help. But as far as factory built cars go and this is my opinion... when you have to boost your V-8s to compete with the other factory V-8s, I'd say that your R&D is out dated. They have boosted cars early in the 40s as a way to increase power. In the 21st century we have so many other options for our V-8s. Boost the 4s and 6s to put them on even footing with small V-8s, but 5.0 and bigger V-8s if they put the time in can produce great power without the blowers and turbos. Again I state this because for me its just too much of a bail out to boost. Too easy for the factories. Just throw a blower on it and their ya are. But put the right R&D in and create an LS-2 or a 5.7 and 6.1. Leave the boosting to the aftermarket. I really like the sound of a blown V-8. But when a Corparation has to go that route, then I really think they have run out of ideas and talent to make the ponies we need. Keep up the good work Dodge and thanks for giving us the chance to put more power adders on to your V-8s. As far as the ones who use factory blowers... they have pushed all they have with those motors as far as bolt-ons. Yeah a better exhaust and open the intake. Add a chip that ups the boost and adds and subtract timing. As far as the engine goes your about done. But with the 6.1 and 6.4 you can add those and blowers. They will take to the power adders better and they are not taxed as much as the factory blown cars. They are real close to maxed as far as strength. Again I am old school and Mopar through and through. I have had to defend my choice of being a Dodge guy in a world of bow tie and blue oval guys. But thats my choice and I guess I'll live with it
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