roadbike56

A bunch of friends were having a conversation about cars. The subject turned to Corvettes discussing the different models. One guy stated his friend has a 2005 with an A6 that he claims came from the factory that way. He further stated it doesn't have paddle shift like the 06 and newer models have, but it was definitely an A6, not an A4.
I was surprised because I had considered moving to a C6 when I had a C5 and I thought I had done enough homework. I've never heard of an 05 with an A6 from the factory. A google search shows that RPM transmissions has a conversion kit to make this change. Further search of the factory numbers shows no A6s installed in 2005, but sometimes errors are made in those numbers. So the question is, did Corvette install ANY A6 transmissions in 2005 Corvettes? Maybe just before the model year change? Or am I right, this is an aftermarket installation.
Thanks in advance for any input.

cal45

The 1st year C6 used the A4 carried over from the C5 - including the same shifter.

EVRose

That guy is wrong. All 05's were either A4 or M6 from the factory. And it's not the identical A4 from the C5. It was redesigned and beefed up to handle the extra C6 HP.

cal45

Did you see that documented somewhere,as it was only a 50hp bump from the LS1 to LS2?
I modded my '03 auto with a Procharger, headers, injectors....and tranny was left stock. It handled the 470ish RWHP without any issues.

cgladish

wouldn't the VIN or body codes verify what was factory supplied?

EVRose

https://www.corvetteforum.com/forums...fferences.html

stingray71

See what the RPO code is for the transmission in his car. It should be MX0 for A4

http://www.c6registry.com/facts/2005.htm

919cw313

VIN won't until 2010 and later.

cal45

Appreciate that info.
It's good that GM did upgrade, but the C5 A4 handles upgraded power very well as is.

HOXXOH

No paddles and an A4 shifter should have raised reg flags about that claim.

Vette_DD

That's,what the Corvette Black Book says.

"The automatic was the 4L65-E, a stronger version of C5's 4L60-E."

bullitt666

No, there is no 2005 A6 from the factory. I don't doubt he bought it that way, but definitely not from the factory..

roadbike56

Thanks for all the input. I thought about this some more. I'm guessing the owner wants to pass off his C6 as some incredibly rare version so he's claiming it came from the factory that way. I'm sure he bought it that way, but somebody loved that 2005 and replaced the A4 with an A6. Got to agree, it's a nice upgrade, just not stock.

SouthBaySurfer

SpryGeezer

It's a six-speed if he's counting Park and Reverse.