Jump to content

2.7l Engine Mods, Please help.

teej750
 Share

Recommended Posts

IMPALADAKID Enthusiast

IMPALADAKID

Posted
Posted

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.

 

  • Like 2
  • 4 weeks later...
  • Replies 46
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

garagerog
garagerog

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.

KARNUT
KARNUT

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

Grandpa1
Grandpa1

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.

Posted Images

Bcroberts9400 New Member

Bcroberts9400

Posted
Posted (edited)

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
  • 3 months later...
Zenon New Member

Zenon

Posted
Posted
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?? 

 

808 HI Enthusiast

808 HI

Posted
Posted
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. 

  • 2 months later...
eckseleven Enthusiast

eckseleven

Posted
Posted
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. :)
  • 5 months later...
Brian Leupold New Member

Brian Leupold

Posted
Posted

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. 

 

 

Mike Borowski Enthusiast

Mike Borowski

Posted
Posted
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 🤷🏻‍♂️

Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted

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:

Mike Borowski Enthusiast

Mike Borowski

Posted
Posted
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. 

  • Haha 1
Mike Borowski Enthusiast

Mike Borowski

Posted
Posted

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. 

  • Like 1
  • Haha 1
Jaolered Enthusiast

Jaolered

Posted
Posted
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. 

Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted
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: 

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.5k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,915
    Total Members
    8,960
    Most Online
    ChristopherDobson
    Newest Member
    ChristopherDobson
    Joined

  • Who's Online   3 Members, 0 Anonymous, 1,255 Guests (See full list)

  • Latest Articles

  • Posts

    • ChristopherDobson
      Vehicle Payments

      By ChristopherDobson · Posted

      Monthly payment is only part of the equation. With today's prices and interest rates, I'd look at the total monthly cost: payment, insurance, registration, fuel, maintenance, and expected repairs. A vehicle that fits comfortably into your budget is usually the better choice than stretching for a higher trim. I've also kept my vehicles longer over the past few years. New cars have gotten expensive enough that driving one for 10+ years, while staying on top of maintenance, often ends up being the most cost-effective approach.
    • Grumpy Bear
      OCI, not when but why?

      By Grumpy Bear · Posted

      10 Ford and Chevy engines proven to reach 300,000 miles   You may note a common 3K OCI on this list of gas motors. I skipped over the diesels. Dh'O. 
    • jake111
      Gasser Subforum Has Been Quiet - - So, Regenerative Braking and Using L10

      By jake111 · Posted

      Thanks newdude!  By the time manual selection is needed, I'm probably too much of a control-freak to depend on the transmission sensing braking to activate automatic downshifting.  I would be anticipating the situation and already be manually downshifting.   This truck replaced a 2004.5 LLY diesel with the Allison 5-speed.  Putting it in T/H made noticeable differences (when the torque converter locked, upshift points, downshift behavior).  On this 2024 gasser with the 10L1000 I haven't been able to detect much, if any, difference.  Ok, I can never tell now when the torque converter locks up.  But I also don't notice differences in shifting.  For downhills, I've probably already manually downshifted by then anyway.  Since it's also more awkward (than the 2004.5) to engage/disengage I don't even bother.  Or maybe it doesn't really matter with just a 3k lb. camper in the bed?   Thanks also for the list of reasons the charging system might select various voltages.  However, what I am seeing doesn't fall into any of those categories.  It very definitely, and very consistently, rises after coasting/braking.  Maybe not immediately, but not very long after coasting/braking.  Very consistently drops voltage when no longer coasting/braking.  It might also be interacting with the camper battery charging (I might disconnect the camper and see if it changes the charging behavior).  I also need to recheck turning on headlights for when I want to force it to charge the camper.   Another JR, in June I converted the camper to LiFePO4.  Since it's not a good idea to try to charge lithiums directly using truck, I installed a Victron Orion XS DC-DC charger (which BTW is AMAZING!!).  Being cheap, I only had to buy that one item (besides the battery, of course) to do the conversion.  The camper OEM 120v battery charger (only 19 years old and works perfectly) and the truck feed the input to the DC-DC charger (not at the same time).  But I didn't want the camper charger feeding back to the truck so I kept the old separator.  I considered replacing the separator with a 30amp diode but that means more work and might add another 1/2 volt drop.  One thing that surprised me was the voltage drop over the long 10awg wire run, so I can only charge smoothly at 8 amps (because the DC-DC charger is completely configurable).  Another reason I don't want an added voltage drop with the diode.  I might also be a little lazy but all this work is being done under the sink with a small cabinet opening.    
    • davester
      cam upgrade in CA

      By davester · Posted

      apparently CA smog is (or at least was)  checking that the vehicle is using the oem and/or a ca smog approved tune, so I expect you'll fail inspection doing it.
    • davester
      Possible lifter tick after DOD delete

      By davester · Posted

      yes, leaking exhaust will mess up o2 sensor readings, which in turn messes up fuel trims.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...