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2.7l Engine Mods, Please help.


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So I just purchased a 2020 2.7. It replaces a 19 LD Custom with a 5.3. I have owned the new LS based LV3 4.3 as well. Power wise, it feels like the 5.3, and it has better fuel mileage than the 4.3. Instead of looking to increase power, I have used what the truck gives me to make the most of the power there. If you want to go faster, to put more power to the ground. Start by putting it in AWD if equipped, shut the traction control off, and put it in Tow/haul mode, or sport mode if equipped. I ran a 15.6 sec 1/4 in a 4.3 powered 2014 silverado 2wd, and a 14.6 in a 5.3 awd configuration. I read the 2.7 can move the new silverado to a 15.1 sec 1/4. It is not Camaro performance, but it is still good.

 

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Just an old man's opinion, but if it was me I would hold off on any exhaust modifications on that 2.7 turbo 4 unless you want your truck sounding like a fart can ricer.

People seem really hung up on numbers. Without realizing more gears in the transmission is the same as more HP. I remember not to long ago 300-350 HP was the end all and that was with a 4 speed overdr

Some of us old guys are happy with the little four banger just the way it is. If I want more power I'll just get in my 03 Corvette.

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You can make the exhaust sound very good and not like a Honda. I played with different mufflers. And different configurations. I took the resonator off the back moved it to in front of muffler location. Then welded a annilator performance muffler and then put a 4 inch resonator tip. And it has a deeper sound. At idle sounds like a diesel, due to the higher compression 4cyl. Also added a k&N filter so at idle you hear turbo wine.

Edited by Bcroberts9400
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  • 3 months later...
On 2/20/2020 at 10:37 AM, teej750 said:

I am just wondering has anyone done ANYTHING to their 4 cylinder, turbo (l3b) engine.  I have scoured a couple forums and it seems as if i have the only 2.7l in the US.  I really want to improve the sound a little bit if possible, and maybe add a little horsepower. I have been debating muffler, cold air intake, or a programmer.   Any ideas or suggestions?? 

 

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On 9/20/2020 at 1:06 AM, Bcroberts9400 said:

You can make the exhaust sound very good and not like a Honda. I played with different mufflers. And different configurations. I took the resonator off the back moved it to in front of muffler location. Then welded a annilator performance muffler and then put a 4 inch resonator tip. And it has a deeper sound. At idle sounds like a diesel, due to the higher compression 4cyl. Also added a k&N filter so at idle you hear turbo wine.

You got a sound clip of this ? Did the same with mine with the biggest body magnaflow muffler available exiting thru the side of the cab. Personally it sounds ok but drones more than I want so ill probably move the exit under the bed with no tip but might want to change the muffler. 

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  • 2 months later...
Well I ordered the aFe intake today. I’ll report back what I think. 
Like most intakes, it's probably more about the sound, unless there are tuning options for you. To me, the noise is worth it in most cases, especially when a turbo is involved. :)
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I have a 2.7 turbo Silverado, I'm coming from an 09 F150 , V8 Triton....I could not be happier, but this Truck is already doing more than it should, asking more out of a 4 banger is most likely asking for trouble. Just be satisfied you have a running truck that gets solid gas mileage and spend your money on ammunition food and a bug out trailer. 

 

 

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1 hour ago, Brian Leupold said:

I have a 2.7 turbo Silverado, I'm coming from an 09 F150 , V8 Triton....I could not be happier, but this Truck is already doing more than it should, asking more out of a 4 banger is most likely asking for trouble. Just be satisfied you have a running truck that gets solid gas mileage and spend your money on ammunition food and a bug out trailer. 

 

 

But they got 70 more pounds feet out of it for 2022 🤷🏻‍♂️

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https://gmauthority.com/blog/2021/09/2022-chevy-silverado-2-7l-turbo-engine-gets-big-torque-boost/

 

New STIFFER BLOCK and new 30% STIFFER CRANKSHAFT to make the 72 pounds foot torque bump RELIABLE. 

A 20% increase

And I got burnt at the stake for saying the first release 2.7 was pushing it.

Looks like even GM agrees with me. 

 

GrumpyBearPhoto.jpg.5402508037dc2c020a00ab4893003cd8.jpg

 

Go ahead. Step on that Gen 1 2.7

:lurk:

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3 hours ago, Grumpy Bear said:

https://gmauthority.com/blog/2021/09/2022-chevy-silverado-2-7l-turbo-engine-gets-big-torque-boost/

 

New STIFFER BLOCK and new 30% STIFFER CRANKSHAFT to make the 72 pounds foot torque bump RELIABLE. 

A 20% increase

And I got burnt at the stake for saying the first release 2.7 was pushing it.

Looks like even GM agrees with me. 

 

GrumpyBearPhoto.jpg.5402508037dc2c020a00ab4893003cd8.jpg

 

Go ahead. Step on that Gen 1 2.7

:lurk:

huh?  You’re making no sense. 

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16 hours ago, Mike Borowski said:

But they got 70 more pounds feet out of it for 2022 🤷🏻‍♂️

My question is, are us 2019-2021 2.7 owners going to get the transmission update to make the shifts better? I'm not going to swap to the 2022 for the extra torque, but if they smoothed out the transmission I want that update. 

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22 hours ago, Mike Borowski said:

They reenforced it to support more power. Common sense. Nothing indicates gen 1 can’t handle what it has. Accept that a 4 cyl is catching up to the 8 cyl old man. 

 

Hey fella....your a real fart smeller...

GM saw fit to upgrade both the block and the crank to handle the extra performance of?????

Come on now....

think.

 

UPGRADING....

 

If you were as quick with the thinking as you are with the mouth this would not need a kindergarten explanation.

 

You are also a bit short on history

Offenhauser ring a bell?

Kids

:idiot: 

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