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Buy a 2005 c6...yes or no?

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Old 08-28-2013, 02:26 PM
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Default Buy a 2005 c6...yes or no?

Im wanting to grab a 2005 c6 with around 50-75,000 miles. Ive found some for pretty good prices. I keep hearing dont get a 2005 and then i hear to get it. For those of yall out there with 05's can i get ya'lls opinions. Issues yall have or had? Hp numbers with bolt ons? Track times? I would do full bolt ons and a tune. Thanks guys
Old 08-28-2013, 02:29 PM
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id go C5 Z before C6 base, even if you found a Z51

its what i did haha
Old 08-28-2013, 02:31 PM
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i believe it goes ZR1>C6Z>LS3C6 (08+)>C5Z(02-04)>Z51C6>C5Z(01)>C6 base>C5base

if youre looking for performance
Old 08-28-2013, 03:45 PM
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The full bolt ons and a fast 90 or 92 will make a Hell of a performer... I've read tests where the stock ls2 intake are quite a choke on the engines. Cam and a fast intake.. 440 rwhp+ with supporting bolt ons
Old 08-28-2013, 03:45 PM
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I have a 05 Z51 but it all stock. It's been a damn nice car. There are a few first year bugs with some of them but if your thinking of a auto trany thats the year C6 to get. The A4 is a lot better than the A6 in the 06 on up's.
Old 08-28-2013, 03:53 PM
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Originally Posted by swoop
I have a 05 Z51 but it all stock. It's been a damn nice car. There are a few first year bugs with some of them but if your thinking of a auto trany thats the year C6 to get. The A4 is a lot better than the A6 in the 06 on up's.
Yes it will be a Auto.
Old 08-28-2013, 04:37 PM
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First off, no known Mfg'er intentionally goes backward on their designs.

Traditionally, when GM produced a new generation Corvette, the new base will have similar performance as the previous generation Z's.

Nothing wrong with the '05 year if carefully chosen, especially if the previous owner had not abused the car with drag strips and other racings.

For standard shift transmission, the rear diff should be beefed up if one goes racing, otherwise, its perfectly ok if owner don't do burn outs and such.

For your choice with an auto, no problem with rear diff. as auto is more forgiving.

---

As for myself, I do have an '05 Z51 manual, full bolt on's + a Fast intake and full compliments of Bilstein sports + F/R Hotchkis sways. A little over 400 ponies to the ground and never abusive with my car - just simply enjoy with self satisfactions.

A simple peek into my engine compartment, but once its closed, nobody knows but me!

Old 08-28-2013, 09:23 PM
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im not saying HP wise, but looking around corvetteforum i went with my C5Z. I was tempted to go with the C6 base but for handling and performance im pretty sure the Z still out performs it hence the "formula" taken directly from CF.com.

im in no means bashing the C6s by any means but best bang for your dollar is the C5Z IMO at this time. when the LS3's and C6Zs drop in price id jump on one of them if i had my camaro still but im happy with my Z and probably wont get rid of it for a long time.
Old 08-28-2013, 09:35 PM
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but i dont think youll be disappointed in the C6 at all.
Old 08-28-2013, 09:37 PM
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Originally Posted by sick_tight
i believe it goes ZR1>C6Z>LS3C6 (08+)>C5Z(02-04)>Z51C6>C5Z(01)>C6 base>C5base

if youre looking for performance
Pretty dead on ranking!
Old 08-28-2013, 09:42 PM
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Originally Posted by victorf
First off, no known Mfg'er intentionally goes backward on their designs.

Traditionally, when GM produced a new generation Corvette, the new base will have similar performance as the previous generation Z's.

Nothing wrong with the '05 year if carefully chosen, especially if the previous owner had not abused the car with drag strips and other racings.

For standard shift transmission, the rear diff should be beefed up if one goes racing, otherwise, its perfectly ok if owner don't do burn outs and such.

For your choice with an auto, no problem with rear diff. as auto is more forgiving.

---

As for myself, I do have an '05 Z51 manual, full bolt on's + a Fast intake and full compliments of Bilstein sports + F/R Hotchkis sways. A little over 400 ponies to the ground and never abusive with my car - just simply enjoy with self satisfactions.

A simple peek into my engine compartment, but once its closed, nobody knows but me!

Nice engine compartment for sure!

I have to agree with your logic, but the C6 generation did have an issue with the 05 rear. There is a reason they switched up the rear end setup after only 1 year. They realized it was an engineering boo boo.
Old 08-29-2013, 06:32 AM
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Originally Posted by 427zm
Nice engine compartment for sure!

I have to agree with your logic, but the C6 generation did have an issue with the 05 rear. There is a reason they switched up the rear end setup after only 1 year. They realized it was an engineering boo boo.
Is it the 6spds having the rear trouble or autos to?
I will be getting the z51 package
Old 08-29-2013, 12:09 PM
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If you are going to get a C6 make sure its a 2008 or newer. Otherwise get a C5Z06.

Just my opinion.
Old 08-30-2013, 06:32 AM
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I heard that the 2005 C6 had weak rears in the back get an 06 or newer.
Old 08-30-2013, 06:38 AM
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Originally Posted by 427zm
Nice engine compartment for sure!

I have to agree with your logic, but the C6 generation did have an issue with the 05 rear. There is a reason they switched up the rear end setup after only 1 year. They realized it was an engineering boo boo.
Too bad they never fixed the engineering boo boo in the f bodies with that weak 10 bolt
Old 09-07-2013, 05:09 PM
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06 has better diff and the A6 which with the right upgrades is just as good as the4l60e or better
Old 09-07-2013, 06:53 PM
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You do know that if its not a Z06, GS, or ZR1 no matter if it has a LS2 or LS3 it's a base model. Nothing wrong with them at all. Preference would be a base model '08 and newer for the LS3 for sure. The '05 models have weak rears so you have to take that into account especially if you are drag racing all of the time.
Old 09-09-2013, 01:08 PM
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Another point to ponder!

If an '05 was historically well cared for with documentation and the price is right - why not.

My '05 never do any show off runs from standing start and it has the "weak" rear. This can be taken as hearsays but in fact, two of our locals had their's supercharged, with one in addition, heads and cam'ed - both with stock '05 rear. But they are mature drivers and "never" drag their car.

LS2 or 3, difference in power is not that much. However, design with the oil drain back within LS3's head is inferior to the LS2 during the quest for a little more power along with the offset rocker arms. Depends on what is important under extreme conditions, blowing up an engine or the rear differential?

That said, if an pristine '05 comes along, still money ahead after changing out the "weak" rear end with one from a reputable rear end specialist vendor.
Old 09-15-2013, 03:17 AM
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I just got a 05 A4 67K on the clock, bone stock driven by a woman. Dash said Debbies car lol, I got it below trade in. They say the 05's have a weak diff, not completely true the case is the weak point, some last yrs with 400-500 hp some crack on stock cars. Now a auto isnt hard on the drivetrain, you see 90% of corvettes that are making power have a built diff, unless you roll race with isnt as hard on a rear. You can upgrade to a c5Z diff or a rpm 06 c6 diff. I ordered a diff for mine, I can sell you the stock one I pull out if you want a spare lol. The bolt on and cam only LS2 record is held by a 05 A4, if you get a 06+ A6 then you will have problems getting the car to shift when making power, no one gives a warranty with a built 6l80....Thats why I chose a 05 for the 4l65 trans, a powerglide swap and 4l80 swap are way cheaper on a 05 than a 06+ its 12k for a powerglide and 20k for a 4l80 on a 06+ so if you want to go that route go a head. Now if you wanted a m6 then either car is a good choice, ls2 make almost as much peak power as a ls3 but the make more low end power. But there is nothing wrong with a 05, there are thousands of people who own one. Good luck with your search!!



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