Power Loss after lift

[DRome26]

For those that have lifted your 1500 AT4s, what have you done to recover the power loss from adding larger tires/ changing truck dimensions? I have always regeared my lifted vehicles and have learned that with the 2023 GMC 1500 AT4 that is not an option. I am just canvassing the forums to learn what you all have done to cover some of that power loss and fuel mileage as I would like to eventually lift my rig.

 

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[Agent 409]

Would like to see if anyone has feedback on this topic as well

 

[pinebaron]

Changing tire size would definitely alter torque and speed.

 

[Viking Truck]

After adding larger tires to my Jeep that I didnt want to regear I added a throttle controller and it brought all the (perceived) power back.

 

[pinebaron]

After adding larger tires to my Jeep that I didnt want to rehear I added a throttle controller and it brought all the (perceived) power back.

Despite, a larger tire is effectively changing the torque curve. A good test would be 0-60 or a 1/4 mile run timing.

 

[Agent 409]

Thanks guys. I’ve lifted trucks before and understand what happens after a suspension lift.

Looking for specific and direct feedback around power/torque loss from people with the GMC Sierra 1500’s. Preferably 6.2L engine.

I haven’t seen anyone talking about this on these forums. What is their perception of the change, etc? Did they specifically do anything power modification wise to mitigate it if it was a problem?

 

[Agent 409]

Going to post this video here in order to spur some conversation. Anyone have any feedback that they have noticed on a 6.2L engine with the 10 speed transmission?

In this video example from American Trucks there was a 30HP & 31 TQ power loss on a dyno after installing heavier/larger wheels & tires.