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2020 6.6L Gasser dyno pull

BoilerUP

By BoilerUP
in 2020-2026 Silverado HD & Sierra HD

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Cowpie Senior Enthusiast

Cowpie

Posted
Posted

Well, if the demand shows up, there will be some outfit that will have E85 modification kits and tunes available at some point.  At least one can hope.  

J-man67 Senior Enthusiast

J-man67

Posted
Posted
If the rear diff smaller on the gasser like it was in the past?

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I don't ever recall the rear end on the 2500s being a different size based on gas or diesel. Trans yes, but not rear end.

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davester Senior Enthusiast

davester

Posted
Posted

It's based on power.  Diesels generally can put more torque through the drivetrain, so they get bigger diffs.  My 6.0L gas gets a 10.5" pumpkin, but if it were a 6.6L duramax or the 8.1L gas, it would get the 11.5" one.

J-man67 Senior Enthusiast

J-man67

Posted
Posted

That makes sense, I just never realized or noticed somehow. I pride myself on being pretty knowledgeable about all GM trucks. Current stable includes a 8.1L/Alison and a 6.0/6spd. I'm checking them out today! Thanks for the info!

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48548 Enthusiast

48548

Posted
Posted
6.6L gas is running 11.5" ring gear for 2020.

 

#iworkforGM 

Thanks. Just curious, if i bought a new truck, i think i would want the srw 3500 just for full torque in all gears and the new 12" rear end on the dmax. I current have a 12 denali hd with 24k on the odo... waiting for the 21 for the interior refresh.

 

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  • 4 years later...
mjberg New Member

mjberg

Posted
Posted (edited)

Has anyone dyno tested the 2024 Allison 10/1000 equipped Silverado HD 6.6 gas?  How much more Horse power does it take to turn that transmission than the 6L90E?  

Edited by mjberg

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