Well, a few people have mentioned this. The 2008 C6 will use the
Tremec TR-6060 M6 transmission rather than the T56. here's the Tremec
light-duty manual transmission line up;
* Light-duty transmissions
** Tremec T-5 transmission
** Tremec T-45 transmission
** Tremec TK0 transmission
** Tremec TR-3550 transmission
** Tremec T-56 transmission
** Tremec TR-3450 transmission
** Tremec TR-3650 transmission
** Tremec TR-4050 transmission
** Tremec TR-6060 transmission
You might want to download this before it gets pulled off the web.
I see a 650 lbs*ft torque rating.
Then there is the LS3:
OK, let's look at the two different 3V head designs that use
a single internal camshaft. I am reasonably sure that the LS3
will use a variation of what is shown in patent 6505589 but
I wonder what the valvetrain will look like. From Figs. 1
and 2 in 6505589, you can see that the head is designed
for direct injection from the top of the combustion chamber.
Patent 6505591 details an intricate way to simultaneously
actuate the exhaust valves while maintaining space for
the DI at the top of the combustion chamber. Patent
6668546, Fig. 5, shows the combustion chamber of both
the single and dual internal camshaft designs from a
(DI port is #68 in drawings)
(Look at Figure 5)
Here's the new valvetrain. As you can see, there is no longer
any place to put the central injection DI injectors.
This could mean many things. First, that no 3V head will
get central injection. It could also mean that there will
be a DI version and a non DI version of the heads. Lastly,
GM could have decided to abandon low pressure, air assisted
DI for high pressure side injection.
Someone needs to spill the beans here ...