Forum Discussion

Groover's avatar
Groover
Explorer II
Oct 20, 2018

A new gas engine for GM heavy duty trucks is coming

A new 6.6L engine with 400hp and 450lbft of torque is coming for 3/4 ton through medium duty GM trucks. It will have all of the new fuel saving tech and seems to emphasize torque over horsepower. It...
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FishOnOne's avatar
FishOnOne
Nomad
Oct 21, 2018
Turtle n Peeps wrote:
FishOnOne wrote:
I wonder if this engine will be based on gm's current small block or will it be an all new engine


I would be shocked to see a SB in a medium duty truck. Just not enough duty cycle. You need big iron to reject all of that heat and not twist up like a rubber band!

Time will tell.


Yeah your probably right. For some reason I thought GM put the original 6.0 with cast iron heads in their medium duty trucks.

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