Late model muscle car's

Jeff Lee · 06-28-2009, 12:07 AM

OK, I'm finally getting out of the stone age. I drove a 2008 Mustang GT/CS with an auto trans last week. All stock except Roush air intake. It had 3.55 rear. I couldn't believe how fast it was and was most impressed with the way the 5-speed auto trans performed. I mean, it didn't even slow down 5 RPM when it shifted from 1st to 2nd, it just kept accelerating. The last Mustang I drove was 3-4 years ago and it was a '98 (?) 4v Cobra. It was a lot of fun and would rev real high but had no bottom end. This 300 HP 3V '08 would probably blow it away. I have my eye on getting a 2010 Shelby if my new business works out. 540 HP w/ a 6-speed in a Shelby for $46K seems like a bargain to me. Thanks Evan.

Went to the track last night for the first time in over a year and drove a friends '06 Mustang GT with 3.55's and a 5-speed manual. It has a chip, intake and cat-back. It also has hard, worn out standard issue tires that need replacing. Obviously it took some finesse to launch it. I went 14.38 @ 101 MPH (it was 111 degrees out earlier in the day). Previously the owner has seen 104 and some change in cooler weather. He's got a total of $8500 in the car as it was an impounded vehicle. That's a mid-low 13 second street car with a/c with some ET drag slicks. Those MPH he runs are as good or better than my last "hot" street car, a '72 'Cuda with a pretty decent 340 and it sure wasn't as nice of a driver as this Mustang.

And the big disappointment was our friends '09 Challenger SRT8 with a 6-speed (all stock) and 3.08's in the rear. It was the first time down the track. Traction was an issue but even so, the MPH was only 98. That's only showing around 300 HP at the flywheel instead of 425 HP. I suggested he take it to the dealer because somethings not right. Anybody see any SRT8 Challengers on the track yet (stock)? A friend of mine in California has a SRT8 300 and can run 13-teens almost anytime. I'm not sure of his MPH.

Frito · 06-28-2009, 06:08 AM

I was at at test & tune Friday with my friends Super Gas car. On a whim I decided to make a pass in my new Challenger. 5.7 motor, 3.06 rear and auto. Left spare tire in and 3/4 tank of gas. left the car in drive, did not manual shift. 969 mileson car. BONE STOCK (at this time)
60 ft 2.2177
330ft 6.1947
1/8 9.391
76.66 MPH.

Car seemd to really start pulling in high gear. No doubt the 3.06. I hope to get some 1/4 miles times soon. First time down the strip since super stock in 1983. FUN FUN!!

John Kelley · 06-28-2009, 07:01 AM

Quote:

Originally Posted by Frito

I was at at test & tune Friday with my friends Super Gas car. On a whim I decided to make a pass in my new Challenger. 5.7 motor, 3.06 rear and auto. Left spare tire in and 3/4 tank of gas. left the car in drive, did not manual shift. 969 mileson car. BONE STOCK (at this time)
60 ft 2.2177
330ft 6.1947
1/8 9.391
76.66 MPH.
Car seemd to really start pulling in high gear. No doubt the 3.06. I hope to get some 1/4 miles times soon. First time down the strip since super stock in 1983. FUN FUN!!

www.wallaceracing.com converts 9.39 / 76.66 to 14.67 & 94.98 in the quarter mile

Frito · 06-28-2009, 03:04 PM

Quote:

Originally Posted by John Kelley

www.wallaceracing.com converts 9.39 / 76.66 to 14.67 & 94.98 in the quarter mile

Thanks for the info. I know working on these is no fun, that is why have waited until now to buy a "performance?" car. But the B5 blue classic has already been a ball of fun in only 3 weeks!! Would I rather have a 70 Cuda with ANY motor. Well Yea, but I am still happy.

bigshow2966 · 06-28-2009, 08:11 AM

Quote:

Originally Posted by Jeff Lee

And the big disappointment was our friends '09 Challenger SRT8 with a 6-speed (all stock) and 3.08's in the rear. It was the first time down the track. Traction was an issue but even so, the MPH was only 98. That's only showing around 300 HP at the flywheel instead of 425 HP. I suggested he take it to the dealer because somethings not right. Anybody see any SRT8 Challengers on the track yet (stock)? A friend of mine in California has a SRT8 300 and can run 13-teens almost anytime. I'm not sure of his MPH.

There was a guy on Moparts a couple weeks ago who actually sold his new Challenger because it was only running 101 or thereabouts, and then complained because he lost $9500 when he sold it. There does seem to be a wide variance in performance of the SRT-8's.

Ed Wright · 06-28-2009, 12:43 PM

The car companies can talk about close production tolerances all the want, the the power out puts are all over the place. I have dyno tested bone stock LS1 GM cars from 275 rwhp to 349. LT1 cars from 225 rwhp to 302. Have seen virgin A4 LS1 cars run everything from 14.20s to 12.80s here at Tulsa. One freak bone stock manual trans 2000 Camaro SS (except the PCM tuning) makes 349 rwhp and runs 12.30s. I have a customer in Houston that ran 11.55 with his A4 2002 TA, never had a valve cover off. But, some won't even go 13s. I don't doubt Ford and MOPAR are the same way.

X-TECH MAN · 06-28-2009, 01:46 PM

How many have had to work on this late model "FOOL REJECTED" computerized trash? I cant even SEE the spark plugs on the passenger side of my '91 Corvette much less change them without cutting the fender and A/C box off with a chain saw first. Give me an early model carb/non-computer car anyday. I used to race a '69 Corvette and at least I could work on it without an electronics degree. No wonder Detriot is bankrupt.

Ed Wright · 06-28-2009, 01:54 PM

Quote:

Originally Posted by X-TECH MAN

How many have had to work on this late model "FOOL REJECTED" computerized trash? I cant even SEE the spark plugs on the passenger side of my '91 Corvette much less change them without cutting the fender and A/C box off with a chain saw first. Give me an early model carb/non-computer car anyday. I used to race a '69 Corvette and at least I could work on it without an electronics degree. No wonder Detriot is bankrupt.

I do. All day, every day. They are faster (not your '91 Vette, but the newer stuff), cleaner and use less fuel to do it.

X-TECH MAN · 06-28-2009, 04:32 PM

Quote:

Originally Posted by Ed Wright

I do. All day, every day. They are faster (not your '91 Vette, but the newer stuff), cleaner and use less fuel to do it.

I feel sorry for you for having to work on this stuff all day........my 91 Vette Convert. isnt the fastest but 13.90's 14.0's at 99 MPH (stab and steer) is OK. Its an all stock 20,000 mile L98 with a 2.59 rear gear, 700-R4 Trans except for a Hyper chip. 27 MPG on a trip.....24 MPG running around. Its no LS-1 but its OK.

bigshow2966 · 06-28-2009, 04:50 PM

The new stuff is not any harder to work on than the crap they turned out in the late '70's-early '80-s. Anyone ever change plugs in a V-8 Monza?

06-28-2009, 12:07 AM	#1
Jeff Lee VIP Member Join Date: Jul 2007 Location: Anthem, Arizona Posts: 2,766 Likes: 0 Liked 3 Times in 3 Posts	Late model muscle car's OK, I'm finally getting out of the stone age. I drove a 2008 Mustang GT/CS with an auto trans last week. All stock except Roush air intake. It had 3.55 rear. I couldn't believe how fast it was and was most impressed with the way the 5-speed auto trans performed. I mean, it didn't even slow down 5 RPM when it shifted from 1st to 2nd, it just kept accelerating. The last Mustang I drove was 3-4 years ago and it was a '98 (?) 4v Cobra. It was a lot of fun and would rev real high but had no bottom end. This 300 HP 3V '08 would probably blow it away. I have my eye on getting a 2010 Shelby if my new business works out. 540 HP w/ a 6-speed in a Shelby for $46K seems like a bargain to me. Thanks Evan. Went to the track last night for the first time in over a year and drove a friends '06 Mustang GT with 3.55's and a 5-speed manual. It has a chip, intake and cat-back. It also has hard, worn out standard issue tires that need replacing. Obviously it took some finesse to launch it. I went 14.38 @ 101 MPH (it was 111 degrees out earlier in the day). Previously the owner has seen 104 and some change in cooler weather. He's got a total of $8500 in the car as it was an impounded vehicle. That's a mid-low 13 second street car with a/c with some ET drag slicks. Those MPH he runs are as good or better than my last "hot" street car, a '72 'Cuda with a pretty decent 340 and it sure wasn't as nice of a driver as this Mustang. And the big disappointment was our friends '09 Challenger SRT8 with a 6-speed (all stock) and 3.08's in the rear. It was the first time down the track. Traction was an issue but even so, the MPH was only 98. That's only showing around 300 HP at the flywheel instead of 425 HP. I suggested he take it to the dealer because somethings not right. Anybody see any SRT8 Challengers on the track yet (stock)? A friend of mine in California has a SRT8 300 and can run 13-teens almost anytime. I'm not sure of his MPH. __________________ Jeff Lee 7494 D/S '70 AMX

06-28-2009, 06:08 AM	#2
Frito Member Join Date: Feb 2009 Location: Kentucky Posts: 451 Likes: 147 Liked 119 Times in 40 Posts	Re: Late model muscle car's I was at at test & tune Friday with my friends Super Gas car. On a whim I decided to make a pass in my new Challenger. 5.7 motor, 3.06 rear and auto. Left spare tire in and 3/4 tank of gas. left the car in drive, did not manual shift. 969 mileson car. BONE STOCK (at this time) 60 ft 2.2177 330ft 6.1947 1/8 9.391 76.66 MPH. Car seemd to really start pulling in high gear. No doubt the 3.06. I hope to get some 1/4 miles times soon. First time down the strip since super stock in 1983. FUN FUN!! Last edited by Frito; 06-28-2009 at 06:12 AM.

06-28-2009, 12:43 PM	#6
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: Late model muscle car's The car companies can talk about close production tolerances all the want, the the power out puts are all over the place. I have dyno tested bone stock LS1 GM cars from 275 rwhp to 349. LT1 cars from 225 rwhp to 302. Have seen virgin A4 LS1 cars run everything from 14.20s to 12.80s here at Tulsa. One freak bone stock manual trans 2000 Camaro SS (except the PCM tuning) makes 349 rwhp and runs 12.30s. I have a customer in Houston that ran 11.55 with his A4 2002 TA, never had a valve cover off. But, some won't even go 13s. I don't doubt Ford and MOPAR are the same way. __________________ Ed Wright 4156 SS/JA

06-28-2009, 01:46 PM	#7
X-TECH MAN Banned Join Date: Dec 2007 Location: Lake Placid, Florida Posts: 3,203 Likes: 1,047 Liked 235 Times in 110 Posts	Re: Late model muscle car's How many have had to work on this late model "FOOL REJECTED" computerized trash? I cant even SEE the spark plugs on the passenger side of my '91 Corvette much less change them without cutting the fender and A/C box off with a chain saw first. Give me an early model carb/non-computer car anyday. I used to race a '69 Corvette and at least I could work on it without an electronics degree. No wonder Detriot is bankrupt.

06-28-2009, 04:50 PM	#10
bigshow2966 Senior Member Join Date: Mar 2007 Location: chicago Posts: 653 Likes: 668 Liked 178 Times in 54 Posts	Re: Late model muscle car's The new stuff is not any harder to work on than the crap they turned out in the late '70's-early '80-s. Anyone ever change plugs in a V-8 Monza?

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