5.3 vs 6.2 for new Silverado?

JantzenOKC · 09-02-2015, 03:53 PM

Looks like I'm going to be in the market for a new truck. It will definitely be a 2016 MY. I'm wondering what everyone's opinion is on which motor would be the better choice. Window sticker only shows 1mpg difference but I just find that hard to believe. Especially with the 5.3 having cylinder deactivation and the 6.2 not. If the mileage is really that close then it would be a no brainer. But I'm thinking real world mileage would be a different story. I don't pull a ton of stuff but I do pull some and would like to be able pull my car around with no problems.

JantzenOKC · 09-02-2015, 04:01 PM

Here's two window stickers, both 4wd crew cabs, one 5.3, and the other 6.2.

I4toV8 · 09-02-2015, 04:04 PM

im in the same boat as you, im going with the 6.2 for the 8 speed transmission.. i test drove both and the 8 speed was just so much more smoother.

*DGthe3* · 09-02-2015, 04:59 PM

Quote:

Originally Posted by I4toV8

im in the same boat as you, im going with the 6.2 for the 8 speed transmission.. i test drove both and the 8 speed was just so much more smoother and well it has an LT1 in the 6.2

Just because its the same displacement doesn't make it the same engine. The 6.2L truck engine is an L86, not an LT1.

I4toV8 · 09-02-2015, 05:00 PM

Quote:

Originally Posted by DGthe3

Just because its the same displacement doesn't make it the same engine. The 6.2L truck engine is an L86, not an LT1.

I was lied to! damn it thanks for the clarification looks like its back to the drawing boards

its a syn · 09-02-2015, 05:05 PM

I can't tell for sure but the 6.2 has a 3.08 rear axel ratio and the 5.3 has the 3.42. That would make them similar in MPG.

GrandAmGT · 09-02-2015, 05:16 PM

I have no experience with cylinder deactivation but it seems like it could reduce reliability when you add another complication like that to a motor, so I would go with the 6.2 liter.

FenwickHockey65 · 09-02-2015, 05:33 PM

You can get the 8 speed with the 5.3L for 2016. Just FYI.

VTSummit · 09-02-2015, 09:29 PM

both trouble free, but some people HATE cylinder deactivation after they buy the truck.
only seen on major fail on a late 5.3- had a defect right off the lot and we swapped the engine for a new one. That was an exception and could happen on any car and any engine.
The 6.2 will prove to be thirstier than the 5.3 overall as one would expect. If you tow, the 6.2 really shines- but if it's rare to tow anything the 5.3 is probably the right choice.

1LEMan · 09-03-2015, 02:04 AM

I have a 13 Silv with 5.3. I do not really care for cyl deact much but its not too bad. I am tickled with tow mode. I just towed my 1le with a Featherweight alum trailer on a trip. Barely noticed it and averaged 16 mpg. Granted no mountains in IA...

JantzenOKC · 09-03-2015, 06:38 AM

All good advice. I probably don't NEED the 6.2 but it sure would be nice. Are we all 100% sure the 6.2 L86 doesn't have cylinder deactivation? I was told it didnt but I'm seeing some contradictions to that online. A lot of websites say the 6.2 L86 ecotec3 DOES have the active fuel management.

motorhead · 09-03-2015, 09:48 AM

Doesn't chevy offer any lower gear options in either motor? I would love the 6.2 with a 4:10 gear option.

Snoman · 09-03-2015, 10:13 AM

Quote:

Originally Posted by DGthe3

Just because its the same displacement doesn't make it the same engine. The 6.2L truck engine is an L86, not an LT1.

Best friend has the 6.2 in his 2015 GMC AWD Denali, it is just stupid insane. Made the mistake of taking off traction control, it can spin tires through three gears. 6 speed, 3.42 rear end with AFM. Diesel belongs in trucks and Gas in cars...but, that is an extremely nice go fast truck.

Brian 1LE SS · 09-03-2015, 03:02 PM

I am pretty sure the 6.2 has deactivation.

09-02-2015, 03:53 PM	#1
JantzenOKC Drives: '13 2LT/RS Twin Turbo Join Date: Aug 2012 Location: Edmond, Oklahoma Posts: 3,073	5.3 vs 6.2 for new Silverado? Looks like I'm going to be in the market for a new truck. It will definitely be a 2016 MY. I'm wondering what everyone's opinion is on which motor would be the better choice. Window sticker only shows 1mpg difference but I just find that hard to believe. Especially with the 5.3 having cylinder deactivation and the 6.2 not. If the mileage is really that close then it would be a no brainer. But I'm thinking real world mileage would be a different story. I don't pull a ton of stuff but I do pull some and would like to be able pull my car around with no problems. __________________ 3.6L Twin Turbo V6 Garrett GT28 turbos -- Jacfab forged connecting rods -- Diamond forged pistons(10.5:1) -- Alky Control Methonal Injection -- CircleD 2E triple disc torque converter -- BMR suspension 10.75 @ 131mph

09-02-2015, 04:01 PM	#2
JantzenOKC Drives: '13 2LT/RS Twin Turbo Join Date: Aug 2012 Location: Edmond, Oklahoma Posts: 3,073	Here's two window stickers, both 4wd crew cabs, one 5.3, and the other 6.2. Attached Images __________________ 3.6L Twin Turbo V6 Garrett GT28 turbos -- Jacfab forged connecting rods -- Diamond forged pistons(10.5:1) -- Alky Control Methonal Injection -- CircleD 2E triple disc torque converter -- BMR suspension 10.75 @ 131mph

09-02-2015, 04:04 PM	#3
I4toV8 Dazed & Drives: matte blue 2014 z28(186) 2015 R1 Join Date: Jun 2013 Location: The Jungle Posts: 708	im in the same boat as you, im going with the 6.2 for the 8 speed transmission.. i test drove both and the 8 speed was just so much more smoother. __________________ Last edited by I4toV8; 09-02-2015 at 05:01 PM.

09-02-2015, 05:05 PM	#6
its a syn B.O.D. 02/16/10 Drives: 2010 SGM Sp. Edition 2017 RS Conver Join Date: Jun 2010 Location: Albia,Iowa Posts: 3,959 View My Garage	I can't tell for sure but the 6.2 has a 3.08 rear axel ratio and the 5.3 has the 3.42. That would make them similar in MPG. __________________

09-02-2015, 05:33 PM	#8
FenwickHockey65 General Motors Aficionado Drives: 2023 GMC Canyon, 2020 Colorado Join Date: Aug 2008 Location: Florida Posts: 37,371 View My Garage	You can get the 8 speed with the 5.3L for 2016. Just FYI. __________________ 2023 GMC Canyon Elevation 2020 Chevrolet Colorado W/T Extended Cab (State-issued)

09-02-2015, 05:16 PM	#7
GrandAmGT Drives: 2010 1LT & 2016 Cadillac CTS V6 Join Date: Apr 2015 Location: Danville, Virginia Posts: 369	I have no experience with cylinder deactivation but it seems like it could reduce reliability when you add another complication like that to a motor, so I would go with the 6.2 liter.

09-02-2015, 09:29 PM	#9
VTSummit Consistently inconsistent Drives: 2015 2LT Summit White Join Date: May 2015 Location: United States Posts: 1,364	both trouble free, but some people HATE cylinder deactivation after they buy the truck. only seen on major fail on a late 5.3- had a defect right off the lot and we swapped the engine for a new one. That was an exception and could happen on any car and any engine. The 6.2 will prove to be thirstier than the 5.3 overall as one would expect. If you tow, the 6.2 really shines- but if it's rare to tow anything the 5.3 is probably the right choice. __________________ Thanks to MRR, I have some SWEET wheels! Thank you! 2015 2LT Ported TB, Ported intake, JACFAB intake spacer, Borla exhaust, IPF 91 tune, Complete 1/LE suspension, Brembo brakes, Goodridge lines, Elite catch can, CAI with Thermo-wrap, 275/40-20 x 10's all around, Z/28 spoiler, GM splitter, Alpine/Polk stereo with AudiControl interface.

09-03-2015, 02:04 AM	#10
1LEMan Drives: 2013 1LE Camaro RS/SS Join Date: Jan 2014 Location: Ia Posts: 198 View My Garage	I have a 13 Silv with 5.3. I do not really care for cyl deact much but its not too bad. I am tickled with tow mode. I just towed my 1le with a Featherweight alum trailer on a trip. Barely noticed it and averaged 16 mpg. Granted no mountains in IA...

09-03-2015, 06:38 AM	#11
JantzenOKC Drives: '13 2LT/RS Twin Turbo Join Date: Aug 2012 Location: Edmond, Oklahoma Posts: 3,073	All good advice. I probably don't NEED the 6.2 but it sure would be nice. Are we all 100% sure the 6.2 L86 doesn't have cylinder deactivation? I was told it didnt but I'm seeing some contradictions to that online. A lot of websites say the 6.2 L86 ecotec3 DOES have the active fuel management. __________________ 3.6L Twin Turbo V6 Garrett GT28 turbos -- Jacfab forged connecting rods -- Diamond forged pistons(10.5:1) -- Alky Control Methonal Injection -- CircleD 2E triple disc torque converter -- BMR suspension 10.75 @ 131mph

09-03-2015, 09:48 AM	#12
motorhead Drives: Love the one you're with Join Date: Sep 2009 Location: Downtown Charlie Brown Posts: 11,850	Doesn't chevy offer any lower gear options in either motor? I would love the 6.2 with a 4:10 gear option.

09-03-2015, 03:02 PM	#14
Brian 1LE SS Drives: 98 Camaro SS Join Date: Nov 2012 Location: Northern California Posts: 461	I am pretty sure the 6.2 has deactivation. __________________ 98 Camaro SS M6, a few mods 13 Ram R/T, tow vehicle 6th gen??

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