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...
Tow Vehicles
msjdbman's avatar
msjdbman
Explorer
Oct 23, 2018
So a new 6.6 litre is coming!! It reminds me of the old 400 small block. 4.125 bore and 3.75 stroke. I ran one for years and years. It was exceptionally easy to wake those up and get some great hp and torque.

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