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G8V8
10-21-2008, 03:35 PM
Hope I'm just not the last to see this and am reposting:

http://media.gm.com/us/powertrain/en/product_services/2008/08car.htm
MANOFSTEEL69
10-21-2008, 03:48 PM
Intresting that they are rating this tranny at a max hp at 469bhp.......My biggest fear with this car is that we are going to surpass the limits of these trannies quickly......:(
wreckwriter
10-21-2008, 03:57 PM
Intresting that they are rating this tranny at a max hp at 469bhp.......My biggest fear with this car is that we are going to surpass the limits of these trannies quickly......:(

Oh yea......
G8V8
10-21-2008, 03:58 PM
Intresting that they are rating this tranny at a max hp at 469bhp.......My biggest fear with this car is that we are going to surpass the limits of these trannies quickly......:(

Yes. I was wondering about that.
G8V8
10-21-2008, 04:10 PM
What is interesting is to look at the Cadilac STS-V and XLR-V. They use the same transmission and it says they make, in the case of the STS-V the max HP and torque the A6 can handle.

Also did you notice the max shift RPM for the A6 in the G8 is 6500 rpm?
norm8332
10-21-2008, 06:15 PM
The guy on the other board that is claiming 882 HP doesn't have very long then with the A6.
GeorgeInNePa
10-21-2008, 06:19 PM
I thought the Caddies were using the 6L90.
Blackrider
10-21-2008, 08:37 PM
ormally they give them the maximum rating of the highest HP engine they're attached to for liability reason. That way if someone blow up their tranny even with just a few mods they can decline wanrranty on thoes grounds.
G8V8
10-22-2008, 02:42 AM
In going through the list the STS-V was the car with the most HP and Tq listed that used our tranny. The STS-V had exactly the same HP & Tq as the max numbers given for our A6.
Greg@PacePerformance
10-22-2008, 06:37 AM
http://media.gm.com/us/powertrain/en/product_services/2009/09car.htm
That is the 2009 listing with the G8 GXP
99-LS1-SS
10-22-2008, 06:54 AM
Well the GXP gets the lower strength manual transmission.

"Both the standard Corvette and the high-performance Z06 use the TR6060 designated as MM6, which is validated to 500 lb-ft of torque, while the TR6060 with the Z51 option features higher ratios and is designated as MZ6. It is validated to 428 lb-ft of torque. "

The GXP gets the MZ6 which is rated at 428 lb-ft of torque. Does anyone know what the weakest point of these transmissions is?
Crazy Paul
10-23-2008, 07:22 PM
I sure wish GM would stop posting "stretched" dyno charts.
Go back to the old days when horizontal and vertical plots were on the same scale. Remember when the HP and TQ lines would always cross at 5250rpm ?


http://media.gm.com/us/powertrain/en/product_services/2009/HPT%20Library/Gen%20IV/Gen%20IV%20Car/2009_60L_L76_G8_GT_n.pdf