2020 GM/Chevy gas 6.6L max towing test

parker.rowe wrote:
They definitely went all out with the weight. As far as I can tell the last gasser test they did was 11K lbs.

16K is a big trailer for a gas truck at that elevation.

I'm not surprised it slowed down as much as it did at the top. Especially since it refused to downshift...they said it held the gear all the way down to 2000rpm. The 6.6 is a little bigger than the 6.0, but the torque peak is still at 4000rpm.

I'll be curious to see how the old 6.4 Hemi with the new 8speed does with that kind of weight. Probably not well. Defiantly looking forward to the new Ford 7.3 test as well.

They tested a 2017 2500HD 6.0 6 speed 4.10s with 13,500

2017 2500HD 13,500lbs on the Ike

Long story short. 13 brake applications on the way down. 10:20 to get to the top.