the gm web site and brochures list a superduty tranny for the
6.0l vortecmax package even in 2wd in the new generation trucks with the 1500 series chassis.
which transmission would this be? surely not an 80 series...

http://configurator.autodata.gmcanad...urVehicle.html

LINK DOESN'T WORK, BUILD ONE AND SELECT VORTECMAX PACKAGE AND IT
SHOW TRANNY


thanx in advance

 

No idea, but if its not an 80 then that is bad advertising.

 

Link doesn't work (your cart doesn't show up) but I'm pretty sure it is the 4L70E (RPO code M70) in that truck.

 

M70, 4L70E, thats what mine said.

 

It's probably a 70e, is that any better than a 60 or 65 series

 

If you look closely at those brochures you'll find that it lists an HD and an SD transmission which I assume means Heavy Duty and Super Duty respectively. I don't know the difference and I'm willing to bet the majority of salesmen at your local dealership couldn't tell you. I think they use the generic terms like HD and SD because most customers don't have any idea what a T56 or a 4L60 is and they're probably correct in that belief. Best auto trans is the 6L80 unless you like to shift and then it's the T56. Try going into your local Chevy dealership and telling the salesman you want a T56 in your new truck to see what response you get.

 

 

The heavy duty is the 4L65E. The Super duty is the 4L70E. The 70E has a sensor on the pump and some hardened parts the 65E doesn't have. They use different converters too.

 

I have a NV4500 5 Speed, so would that be a super duper duty trans the 70e sucks.

 

I love the 70e, shifts nice, goes great with the LQ9.