TopFlite

If i'm correct the 2005 C6 came with the automatic 5 speed and the 2006 with the automatic 6 speed correct? I was curious if anyone has started to swap any C6 automatics into Gen III/IV F-bodies. I would really like to run a 4.10 rear end gear but with the A4 it just wont have enough freeway pull and top out quickly. Anyone swap one over yet?

Urban Legend

iTrader: (5)

All C6 trannies are 4 speeds, except the 06 C6 which has a 6 speed automatic. There was a thread around here about someone cutting out the back of the f body to mount the Corvette tranny which is rear mounted. As for the 6 speed versions (frount mounted) on the new Escalades I do not think anyone has done it yet. But is only a matter of time before it happens.

texada

iTrader: (3)

I will make that swap to an a6 when it becomes available. Those a6 in the new c6's are quick and runs better from a roll.

TopFlite

I personally cannot wait for the Escalade or C6 trannsmission to become available. The issue of 3.73s vs 4.10s in an automatic trans would most likely dissapear as you probably could run 4.56 gears, even though we really dont have that much lack of tq, with the 6 speed auto. What about the bellhousing for the escalade trans? Im not sure if that will bolt right up to the LS1 block as well as the computer programming issue from going from an A4 to an A6... I wouldnt be suprised some of the M6 guys switch over to the A6.

Ragtop 99

iTrader: (7)

I doubt you'll want 4.56s. The C6 six speed is designed for low numerical rear gears. IIRC first gear is 4.02, so stock 3.23s would give you a lot of gear - almost as much as running 4.33s with a 4L60e.

The 6 speeds still suffers from a huge 1-2 drop in ratio and it remains to be seen as to whether it can handle being run hard in 450+ RWHP car.

LiquidFire350

iTrader: (8)

i remember reading somewhere that the 6th gear is just about the same ratio as the 4th in the 4L60

Wesmanw02

iTrader: (4)

Good points. Its a relatively new tranmission, I'm curious to see how much power it will be able to handle without a rebuild. Considering its used in the C6 Z06, it should at least be able to hold at least 480RWHP though

Ragtop 99

iTrader: (7)

Here are the gear ratios

12secSS

iTrader: (30)

Just an FYI for you ... the 6L80E was proved (durability and strength) behind a 9.3L engine. YES, I said 9.3L. I think it can handle a 450rwhp car high RPMs (6500+) will be a different matter.

GM 6L80E Specifications

natronathon

that will be interesting to see... although the reprogramming involved might be a bi difficult.....

frcefed98

iTrader: (16)

The 6L80E has its own computer, so i'd think it would be a pretty straight foward swap.

Wesmanw02

iTrader: (4)

Well considering the C6 Z06's 7000RPM redline, I don't think higher RPM's will be much of a problem. That being said, I'd say it should be good for at least 7500+RPM before it would become an issue.

AronZ28

iTrader: (2)

The Z06 is avaible with only a T-56 manual tranny.

Wesmanw02

iTrader: (4)

Nope, as of this year it is now available with the 6-speed paddle shifted automatic

Corvette Z06 Features

Urban Legend

iTrader: (5)

ZO6 is not offered with the 6 speed auto. Its even on the link you posted. Only 6 speed manuals.

spy2520

iTrader: (3)

look again it definitely says the six speed auto is not available on the z06, only for the coupe and vert.

AronZ28

iTrader: (2)

p'owned

Ragtop 99

iTrader: (7)

Why does GM rate it's maximum power inputs so low?

Engine HP is not impressive and I'm guessing the gearbox torque reflects the torque converter multiplier.

TopFlite

I wonder if they use kevlar clutches and bands in the new A6 in the C6... Hopefully Ray Bestos will make a kit for the A6...

Wesmanw02

iTrader: (4)

Sorry guys thats my bad, I clicked Z06 and then it listed the 6-speed auto under features, I didn't realize it only applied to the Coupe/Convert.