2020 L5P different? - Chevy and GMC Duramax Diesel Forum
2017+ L5P Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.

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post #1 of 16 (permalink) Old 10-08-2019, 06:07 PM Thread Starter
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2020 L5P different?

Just watched a Banks Power video claiming some adjustments made to the L5P motor for 2020 trucks exclusively. Does anyone have further information on this ?


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post #2 of 16 (permalink) Old 10-08-2019, 08:42 PM
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Not sure which banks video you watched, but Gale did one showing some of the physical engine differences.

Cooling system has capacity increase as does engine oil cooler. Fan drive is different to support the fan/radiator size increase. These changes were part of what was necessary to get the increased SAE towing rating.

Hard to argue that it's not different, as the items he points out are external and easy to see.

Of course there is also the the new transmission, new transfer case and new def system.
These will all require different programming in the various computers.
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post #3 of 16 (permalink) Old 10-09-2019, 02:50 AM Thread Starter
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Originally Posted by redwngr View Post
Not sure which banks video you watched, but Gale did one showing some of the physical engine differences.



Cooling system has capacity increase as does engine oil cooler. Fan drive is different to support the fan/radiator size increase. These changes were part of what was necessary to get the increased SAE towing rating.



Hard to argue that it's not different, as the items he points out are external and easy to see.



Of course there is also the the new transmission, new transfer case and new def system.

These will all require different programming in the various computers.


Sounds like you are talking about the same video. Okay thatís interesting , I didnít think they had variations of the same motor models. Guess you learn something new everyday . Have to do some more research , thanks for the reply !


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post #4 of 16 (permalink) Old 10-09-2019, 10:54 AM
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I re-watched Banks original video comparing LML to L5P.

At the time Gale felt that GM could legitimately get 500HP and 1,000lb torque from the L5P with nothing more than software adjustment.

Changes for 2020 to me look external to the engine...

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post #5 of 16 (permalink) Old 10-09-2019, 11:33 AM
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They do use a different oil filter as well.

Found out the hard way and ordered several for the 19 thinking they were the same.
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post #6 of 16 (permalink) Old 10-09-2019, 11:56 AM
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When does anyone think theyíll update the power again? Couple years?


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post #7 of 16 (permalink) Old 10-09-2019, 12:00 PM
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They canít spill all their power at once!! Prob just small adjustments spit more power. Since a large redesign of engine is very expensive like they did this time around.


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post #8 of 16 (permalink) Old 10-09-2019, 12:29 PM
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Quote:
Originally Posted by FROGMAN524 View Post
When does anyone think theyíll update the power again? Couple years?
GM will up the power in a year or two...then surround with marketing campaign "...most powerful Diesel..."

Then Ford will do the same...

Then Dodge...

Who on God's green earth really needs 910lbs of torque? Or 1,000lbs?

It's all about marketing, image, and getting people to want and buy the latest and greatest...which all feeds back to sales, profits, keeping investors happy.

It's all about the benjamins...
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post #9 of 16 (permalink) Old 10-09-2019, 12:31 PM
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Originally Posted by Busa Dave View Post
They do use a different oil filter as well.

Found out the hard way and ordered several for the 19 thinking they were the same.
oil filter different? what #?

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post #10 of 16 (permalink) Old 10-09-2019, 01:20 PM
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I watched that Banks video. Looked like all the changes were external - even could be called "bolt-on". So maybe that's why they still call it the L5P. Looked like you could add all this new cooling gear to a '17-19' L5P by just bolting stuff on. Of course the bigger radiator, fan and such might be hard to add to a pre-'20 body. Nothing internal to the motor (block, heads, rods, crank, pistons... changed)

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