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Old 06-07-2015, 12:41 AM   #1
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2007 Roush 427R reliability

My '99 GT has given me a lot of problems over the year and a half I've owned it, so... it's time to upgrade. Looking at an absolutely gorgeous jet black 2007 Roush 427R with 15k (!) miles. I've never been a fan of the '05-'09 Mustangs in general, but I just love everything about this Roush.

Question is... how reliable are they? Are they notorious for being lemons or anything? Anything in particular to look out for when buying one? Not sure how many owners of them there are on here since they only made 1,025 but it's worth a shot.

Do they compare performance-wise to the new 5.0s? I know they're rated at 1 HP more than a 2013/2014 GT and are lighter, but it's supercharged and I know the power curve doesn't always look as nice as a N/A motor.





The pics don't even do it justice, it's absolutely stunning in person!
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Old 06-07-2015, 12:50 AM   #2
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Previous 427r owner here. (Coyote now)
If it's performance your after get a coyote.
The 427r is a good car. Biggest downfall is the m90 blower, and it's horrible with heat. It needs a smaller pulley, bigger intercoooler, full exhaust, custom tune badly. Even with all these modifications you will be about 430-440 at the tires. The m90 blower will also be maxed out at this point.

Also it will still get demolished by a full Bolton coyote.
But If you are set on the roush then that's personal preference.


My old one

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Old 06-07-2015, 12:50 AM   #3
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Nice looking ride. How much they asking for it?

Have a great day!
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Old 06-07-2015, 01:15 AM   #4
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Originally Posted by Rapinator126 View Post
Previous 427r owner here. (Coyote now)
If it's performance your after get a coyote.
The 427r is a good car. Biggest downfall is the m90 blower, and it's horrible with heat. It needs a smaller pulley, bigger intercoooler, full exhaust, custom tune badly. Even with all these modifications you will be about 430-440 at the tires. The m90 blower will also be maxed out at this point.

Also it will still get demolished by a full Bolton coyote.
But If you are set on the roush then that's personal preference.


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Thanks for the input! Yeah, I've heard some not-so-great things about the M90 which is my biggest concern. There is that VMP 500 HP package for it, but I would think that little S/C would probably be right at it's limit and being pushed hard.

How do they compare bone stock vs bone stock? About the same? I am concerned about performance to a point. I don't need some 600+ rwhp monster since it will have to be my daily, but I'd like to at least be able to hang with the coyotes and preferably beat a stock or bolt-on one.

I'm getting my *** handed to me more and more often in a bolt-on + tuned '99 GT and it's getting old. I can only have fun against older cars, it's a little faster than the 90's Cobra models.

Nice looking car you had there... and that was also an '07?
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Old 06-07-2015, 01:17 AM   #5
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Originally Posted by 2011 Kona Blue View Post
Nice looking ride. How much they asking for it?

Have a great day!
It is a beauty for sure! They're asking $26,800 but I'd like to get them around 24-25k. Probably do-able. The mileage amazes me... 15k! Some rich guy's Sunday driver I guess.
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Old 06-07-2015, 01:19 AM   #6
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Originally Posted by LaserRed99 View Post
Thanks for the input! Yeah, I've heard some not-so-great things about the M90 which is my biggest concern. There is that VMP 500 HP package for it, but I would think that little S/C would probably be right at it's limit and being pushed hard.

How do they compare bone stock vs bone stock? About the same? I am concerned about performance to a point. I don't need some 600+ rwhp monster since it will have to be my daily, but I'd like to at least be able to hang with the coyotes and preferably beat a stock or bolt-on one.

I'm getting my *** handed to me more and more often in a bolt-on + tuned '99 GT and it's getting old. I can only have fun against older cars, it's a little faster than the 90's Cobra models.

Nice looking car you had there... and that was also an '07?
The vmp 500 kit gets it to 500 at the crank not the tires. I had the vmp 500 kit on mine, full exhaust, bigger intercooler and custom tune, and a 75 shot of nitrous. Without the bottle I would loose to 5.0's back then with full Boltons.

Mine was a 08.

It was a fun car. Alot of fun.
If your not after 100% performance then go for the roush.

100% stock vs 100% stock, drivers race but the coyote will still have the upper hand. Just bc of where it makes its power.

But 70% of the coyotes won't be setup correctly anyways. So it will be a drivers race still

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Old 06-07-2015, 01:36 AM   #7
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Originally Posted by Rapinator126 View Post
The vmp 500 kit gets it to 500 at the crank not the tires. I had the vmp 500 kit on mine, full exhaust, bigger intercooler and custom tune, and a 75 shot of nitrous. Without the bottle I would loose to 5.0's back then with full Boltons.

Mine was a 08.

It was a fun car. Alot of fun.
If your not after 100% performance then go for the roush.

100% stock vs 100% stock, drivers race but the coyote will still have the upper hand. Just bc of where it makes its power.

But 70% of the coyotes won't be setup correctly anyways. So it will be a drivers race still

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Right, 500 crank. Which is cool with me I think. As long as I can hold my own with a bolt-on I'll be happy enough.

Can I ask what the bigger intercooler cost you? Is it a bad idea to install that 500 HP kit without it? Last question, any reliability issues with that car? My current GT seems to end up in the shop every 3 or 4 months for one thing or another. Last thing I need is another money pit. I've been pretty disappointed with it so far in that regard, especially since my old '95 GT was the most reliable car ever.
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Old 06-07-2015, 01:45 AM   #8
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That is a good looking car. For $25k, I would be taking it home. Good Luck!
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Old 06-07-2015, 01:45 AM   #9
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Right, 500 crank. Which is cool with me I think. As long as I can hold my own with a bolt-on I'll be happy enough.

Can I ask what the bigger intercooler cost you? Is it a bad idea to install that 500 HP kit without it? Last question, any reliability issues with that car? My current GT seems to end up in the shop every 3 or 4 months for one thing or another. Last thing I need is another money pit. I've been pretty disappointed with it so far in that regard, especially since my old '95 GT was the most reliable car ever.
I paid about $700 for the dual fan intercooler. its not needed with the vmp 500 kit, just helps with the cooling.
No reliability problems, it was a dam good car.

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Old 06-07-2015, 01:56 AM   #10
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Man that car looks good.
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Old 06-07-2015, 02:18 AM   #11
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Hey Rap, do the internals come fully forged with that 427 R or its just stock 4.6 with SC.

Have a great day!
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Old 06-07-2015, 02:21 AM   #12
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Originally Posted by 2011 Kona Blue View Post
Hey Rap, do the internals come fully forged with that 427 R or its just stock 4.6 with SC.

Have a great day!
Pretty sure Roush just slapped a blower on it
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Old 06-07-2015, 03:11 AM   #13
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Thanks for the comments, everyone! Especially rapinator.

Pretty sure I'll be bringing this 427R home if it's still there in a week or so.
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Old 06-07-2015, 04:01 AM   #14
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Its a really nice car but being that its a 8 year old car, 26,800 seems high to me. Granted it only has 15k miles on it, its still an 8 year old model. Does that sound high considering one can buy a 2013 5.0 for that price or less.

Have a great day!
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Old 06-07-2015, 10:23 AM   #15
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Originally Posted by 2011 Kona Blue View Post
Hey Rap, do the internals come fully forged with that 427 R or its just stock 4.6 with SC.

Have a great day!
No sir it's just a normal 3v.

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Old 06-07-2015, 11:48 AM   #16
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Its a really nice car but being that its a 8 year old car, 26,800 seems high to me. Granted it only has 15k miles on it, its still an 8 year old model. Does that sound high considering one can buy a 2013 5.0 for that price or less.

Have a great day!
I wouldn't pay the asking price for it. I'm going to shoot for the low 20s and see what happens. The KBB doesn't take the Roush package into account, but it says a 2007 GT with 15k miles is worth about $21k. Being a rare supercharged Roush should add a couple thousand to that.

I totally understand what you're saying though and that does keep crossing my mind. The Roush is unique though. I dunno, I didn't get a chance to actually drive it yet as the dealership was closed when I got there. Will be doing that Monday and see what it's like. I've driven a 2013 5.0 before. I can compare.

In the end, I just want a car that I can depend on and enjoy getting into every day. Year is not so important to me so long as it isn't totally ancient. I think the enjoyment factor would be higher in the Roush, that car really stands out from the crowd.
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Old 06-07-2015, 02:29 PM   #17
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Like LaserRed99 was saying......If you are going to finance the car, the bank is going to value it as if it was a 2007 GT.
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Old 06-07-2015, 02:31 PM   #18
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No sir it's just a normal 3v.

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Copy that boss. 👍

Have a great day!
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Old 06-07-2015, 02:34 PM   #19
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I wouldn't pay the asking price for it. I'm going to shoot for the low 20s and see what happens. The KBB doesn't take the Roush package into account, but it says a 2007 GT with 15k miles is worth about $21k. Being a rare supercharged Roush should add a couple thousand to that.

I totally understand what you're saying though and that does keep crossing my mind. The Roush is unique though. I dunno, I didn't get a chance to actually drive it yet as the dealership was closed when I got there. Will be doing that Monday and see what it's like. I've driven a 2013 5.0 before. I can compare.

In the end, I just want a car that I can depend on and enjoy getting into every day. Year is not so important to me so long as it isn't totally ancient. I think the enjoyment factor would be higher in the Roush, that car really stands out from the crowd.
It's sure a beauty. Looks great. Rap, I loved you're black with yellow striping on it. Great color combo.

Have a great day!
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Old 06-07-2015, 05:58 PM   #20
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Wow... this car has had 4 owners at 15k miles. I smell a lemon. That's disappointing.
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Old 06-07-2015, 07:57 PM   #21
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I'm guessing everybody would agree this would be a dumb purchase considering the 4 owners?
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Old 06-07-2015, 07:59 PM   #22
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Unless it was just a garage queen for the 4 people who owned it

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Old 06-08-2015, 10:12 AM   #23
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It might have been... $26k will get you a supercharged coyote if you look. I just saw a 2012 Lava Red Roushcharged car go like 2 or 3 months ago for $25k on SVTP. Car WAS set up properly and had all the nice bolt ons too and only had 20 something thousand miles on it.


Conversely, just a little more $$$ can get you a low mileage GT500 from the same era.



Check out the SVTP classifieds if you are looking for something real nice with real low mileage in the $25-$30k price range.
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Old 06-08-2015, 01:56 PM   #24
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Need to see what I can find under $25k. I was looking at the Roush being pretty confident I could talk them down to that. I think I will keep looking around though. Just have a bad feeling about this one... and yeah, a Coyote would be better in the long run.
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Old 06-08-2015, 02:12 PM   #25
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Like I said, check out SVTP. You'll probably be amazed at what the PP sales there are going for. I'd never buy a car like that from a dealer...
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