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I have the choice of a stock 2004 Z06 with 22000 miles on it or this loaded with every option Supercharged 2005 Z51 Convertible with 22000 miles on it. Which would you choose and why? Thank you for your help.
Dave
The ebay listing for the C6 is not there, being updated due to error in the listing.
The rule of thumb is always to buy as new as possible within your desired price point and budget.
Each generation of the corvette has been refined to be better than the last, so just for that reason, I would chose the C6 over the C5.
The C6 is more refined than the C5, and likewise, the C7 is more refined than the C6, and i'm sure the C8 will be more refined than the C7, etc. etc.
It will depend upon your preference on what generation you like the best and why.
I personally was never a fan of hideaway headlights, so it wasn't until the C6 came out, that I wanted to purchase a Corvette.
Good luck with your choice. It is solely your decision, no matter what we say here.
That's how I found it, on eBay. I have his number and have been talking with him. He gave me a price he would sell it to me at. It's a beautiful car and I'm sure would run rings around a stock Z. It has the stage 2 Edelbrock supercharger on it making 600 hp. I'm pretty sure I'm going to accept his price, just wanted to see what you guys had to say, I respect all of your wisdom on such matters.
Thanks
Dave
A stock C5 vs a blower C6? There is NO comparison. C6 all the way!
This! It has had a lot of money put into it, and it has been very tastefully done. And I happen to like yellow.
There are two noted minor negatives for the 2005 C6 versus 2006 and newer. The rear differential can grenade on repeated hard launches (drag racing) if it gets into wheel hop. GM strengthened the differential after 2005. 2005 has a 4L60/65E 4 speed automatic, which is weaker than the 2006 and newer 6L80E 6 speed. The 4L60E should be fine behind your car with 600 hp; it didn't work nearly as well behind my 6200 lb 2002 Magnacharged Avalanche with 475 hp. I had it built/hardened as much as possible when I added the Magnacharger; it made it about 40k miles before I had to have it rebuilt. It was more because of the heavy truck behind GM's poor choice of a weak transmission suited to a car than a heavy truck.
Nice choice, most guys will tell your buy the newest version you can afford when looking at C5 vs C6.
You made a wise choice 👍🏻
come on over to the forced induction section and say hi...it’s a different crowd over there! Lots of solid dudes with a ton of knowledge and experience 🇺🇸
BadAv-theres a reason why some of best builders in the country including RPM Transmission and East Coast Supercharging stopped building the 6L80E.They are hit and miss according to both.Friend has had 6 new and rebuilt 6L80E's installed in his 09 car with the best parts available and its sitting in his garage this winter needing another rebuild.He would like to install a 4L65E in the car but the cost for the conversion from RPM was about $12,000. the last time he got a quote.I had RPM rebuild my 4L65E when I doubled the RWHP 4 years ago and have never had an issue with it.The 4L65E has been around in one form or another for the last 35 years.The one in my other car was installed by SLP in 1991 which consisted of a brand new 700R4 from GM and SLP's $80. shift kit and to this day I have never had an issue with it.
BadAv-theres a reason why some of best builders in the country including RPM Transmission and East Coast Supercharging stopped building the 6L80E.They are hit and miss according to both.Friend has had 6 new and rebuilt 6L80E's installed in his 09 car with the best parts available and its sitting in his garage this winter needing another rebuild.He would like to install a 4L65E in the car but the cost for the conversion from RPM was about $12,000. the last time he got a quote.I had RPM rebuild my 4L65E when I doubled the RWHP 4 years ago and have never had an issue with it.The 4L65E has been around in one form or another for the last 35 years.The one in my other car was installed by SLP in 1991 which consisted of a brand new 700R4 from GM and SLP's $80. shift kit and to this day I have never had an issue with it.
I'm very familiar with the 4L60/65 after my experience in the Avalanche. I haven't messed with the hard parts on a 6L80 because my car is stock hp. I've only done a few very minor tweaks to bump the shift rpms and speeds up to my liking. From my research/understanding, it's a completely different animal to tune, and it's easy to screw things up if you don't know what you are doing. I have seen very few complaints on the forum about either auto, but certainly more for the 4L60/65 from the guys who increase the horsepower drastically and run them hard with a stock 4L60/65. I personally consider that as simply not properly modifying the vehicle; if you supercharge/turbo you should also build the tranny commensurately.
From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
Originally Posted by irok
BadAv-theres a reason why some of best builders in the country including RPM Transmission and East Coast Supercharging stopped building the 6L80E.They are hit and miss according to both.Friend has had 6 new and rebuilt 6L80E's installed in his 09 car with the best parts available and its sitting in his garage this winter needing another rebuild.He would like to install a 4L65E in the car but the cost for the conversion from RPM was about $12,000. the last time he got a quote.I had RPM rebuild my 4L65E when I doubled the RWHP 4 years ago and have never had an issue with it.The 4L65E has been around in one form or another for the last 35 years.The one in my other car was installed by SLP in 1991 which consisted of a brand new 700R4 from GM and SLP's $80. shift kit and to this day I have never had an issue with it.
To add to this you can't even get a 6L80 trans for a Corvette from jasper! They won't sell them, we won't even order one from any builder at this point. If you need a trans order it yourself and we will install it, but we will not stand behind it in any fashion. (other than the install quality of course)
That said though, the stock internals of the 6L80 are actually stronger than the 4L60 if you have them in your hands, so both of you are technically correct, but you never know what you are going to get for life out of a 6L80, same tune, same conditions.
To add to this you can't even get a 6L80 trans for a Corvette from jasper! They won't sell them, we won't even order one from any builder at this point. If you need a trans order it yourself and we will install it, but we will not stand behind it in any fashion. (other than the install quality of course)
That said though, the stock internals of the 6L80 are actually stronger than the 4L60 if you have them in your hands, so both of you are technically correct, but you never know what you are going to get for life out of a 6L80, same tune, same conditions.
It's good to see a respected forum vendor provide their input. My only point was that the 6L80 is stronger stock for stock than the 4L60/65. It's got totally different operating parameters than the 4L60, which is essentially just an updated 700R4. There is a ton of history and experience on modifying both hardware and software. The 6L80 has proven very tricky to modify, even by the pros, which is why I have only slightly tweaked a few of the parameters on mine, as well as eliminating a lot of the torque management. My car has plenty of juice to suit me in its stock configuration and will remain that way, which is why I am not too concerned about it. They seem to hold up OK in stock form in 6k lb half ton trucks towing up to 10k lbs, so I figure it should be OK in a stock power level 3600 lb Vette.
Need help deciding
I agree, 405 HP vs 600hp. Thanks guys, made a deal for the C6. Excited, now I have to get it trucked to the Phoenix area from PA.
