5.3L vs 6.2L V8

[the wanderer]

27 minutes ago, N55_6MT said:

Not to keep talking in circles here, but I haven't missed your point. I've totally agreed with you that the 6.2 will loaf along happily at times when the 4.3 or 5.3 would be in a lower gear. The point I'm making is that there is nothing wrong with that, and not something I encounter much in day-to-day driving. I've driven trucks with the 5.3 and the 6.2 over the years and to me the "feel" has always been much more stark up until this generation when the transmissions are the same. I drove a 10spd 6.2 Denali and a 10spd 5.3 SLT back to back fully expecting to be lusting after the 6.2.  To my surprise, the difference at normal levels of acceleration (i.e. not breaking the law) was imperceptible because the 5.3 is already plenty capable for the job of driving my groceries around. 

 

At the end of the day you shouldn't be caring a whole lot if a engine is running at higher RPM or a lower gear, all you should care about is capability and if your chosen engine has the ability to do the task you're asking of it while delivering the economy you need. The differences between the engines only show up when you start getting near the limit of the engines capability, up until then it's just not that big of a deal. 

 

And yeah, my truck is kind of an appliance. I didn't buy it for a sporty drive or to have neck-snapping acceleration, I've got other cars for that (see my user name). I bought it so I can tow my TT, haul ****** to the dump, pick up groceries and drive to work occasionally. And that's OK...

 

Yes it's OK. And yes you can notice it. I'm comparing 6.2 vs 4.3.

 

Grumpy made the claim that there is no difference as long as both have the power to move the truck at the requested speed. That's what I'm arguing. There IS a difference. And it IS noticable.

 

I'm arguing the fact: "there is a very noticable difference", not the opinion: "it does or does not matter."

 

Whether you care or not, or whether your prefer one or the other, that's not my issue. Just don't claim there is no difference to try and justify your purchase.

[Yondu]

On 5/27/2020 at 6:28 PM, Jonofmac said:

Nice. So you're now resorting to personal insults instead of showing any data. I provided a snippet of how a piezoelectric knock sensor works because you were confused. I corrected your claims, buddy lol. My ego suffers no bruises from your unsubstantiated claims or personal insults. I actually am an electrical engineer with both hardware and software experience for embedded devices and frequently work with several large OEMs (I do more than just automotive).

 

To correct you trying to put words in my mouth, I never said it will anticipate knock before it can happen. I'm saying knock is not a binary yes there is knock/no there is not knock entity. I'm saying that you can measure the relative combustion volume/knock level and see if you're on the threshold before you get to full blown pinging. No, you won't exactly how far from knocking you are, just that you're at seeing higher combustion pressure rises.

 

You act like the only vibrations that occur in an engine are knock. You clearly lack the understanding of what knock is and what is causing this vibration. I explained it once but I guess it didn't stick...

 

To try to dumb it down more: as fuel gets ignited, pressure in cylinder rises quickly and this force pushes down on piston. This pressure profile varies greatly depending on when the fuel mixture is ignited (amongst other things). Too late, make reduced torque. Too early, peak pressure occurs as piston still going up (also results in negative work/reduced torque). These vibrations from combustion are ALWAYS PRESENT, but to varying levels depending on when ignition occurs and charge density.

 

Yes, I completely agree that knock sensors cannot see the future. I never claimed they could. They must measure things that already happened. What you repeatedly fail to comprehend is that these vibrations that they see exist in every combustion cycle, regardless of whether knock is happening or not. The relative magnitude of these vibrations are what change as rapid cylinder pressures increase. ECUs sample this analog current/voltage. Misfire detection wouldn't be possible if they saw 0 vibrations except when knock occured.

 

Don't believe me? Go hop on HPT or EFI live and change your knock sensor sensitivity to make it sensitive. You'll get "knock" reported under light throttle. The reverse is true too

 

Sent from my SM-N960U using Tapatalk

 

 

 

It's like you either didn't read what I said or you are chosing to ignore and explain things I already explained.  Then you go on to explain things that were never even brought up because you assume I didn't already know them, like you explaining them is proof that it's new to me. 

 

Exhausting. 

[Yondu]

15 hours ago, TXGREEK said:

It’s always like that. This is why my friends are shocked that I participate in a forum! I’m sure that the Chinese Virus has a lot to do with the attitudes but there’s not one discussion that doesn’t involve a couple idiots that spring up out of the cracks just to cut someone down for not agreeing with them.


Sent from Above

As long as you can come in and tell everyone everything you have is the bestest cause you're the bestest with no disagreements you're chipper. If not, they're cockroaches.  Irony much?  

[TXGREEK]

As long as you can come in and tell everyone everything you have is the bestest cause you're the bestest with no disagreements you're chipper. If not, they're cockroaches.  Irony much?  

Are you an internet Troll? You’re envious because someone is expressing their personal experiences with products apparently out of your league? The discussion is about recommending a 5.3 or 6.2, not what others have or you can’t afford.

Now, either you’ve got something, anything constructive to add to the discussion, if not then I’m sure you’ll find somewhere you feel much more comfortable at.

Moving along now.....


Sent from Above

[Jonofmac]

Are you an internet Troll? You’re envious because someone is expressing their personal experiences with products apparently out of your league? The discussion is about recommending a 5.3 or 6.2, not what others have or you can’t afford.

Now, either you’ve got something, anything constructive to add to the discussion, if not then I’m sure you’ll find somewhere you feel much more comfortable at.

Moving along now.....


Sent from Above

I'm ignoring this yondu guy lol. He's just a prick that likes to argue. I suggest you do the same

Sent from my SM-N960U using Tapatalk

[TXGREEK]

I'm ignoring this yondu guy lol. He's just a prick that likes to argue. I suggest you do the same

 

Sent from my SM-N960U using Tapatalk

 

Yeah, I’ve had run ins with him in the past and his cockroach buddies in the past. Thanks, I’ve already blocked him....

 

 

Sent from Above

[Mikedfw]

Man haven't been in this thread for a few days...missed a lot of good stuff here. [emoji23]

Sent from my SM-N960U using Tapatalk

[JimCost2014]

On 5/28/2020 at 6:33 AM, Ferrari Eater said:

I never imagined that after asking if the benefits of one engine outweigh the other, that people would be yelling at each other about piezoelectric knock sensors.

Yea, it is still going, and gaining a little bit of momentum, which begs the question, could a 5.3 or 6.2 get this baby to 200 posts quicker????

[Chevyguy273]

To the op. This has turned into an absolutely insane post. The name calling over a tiny object has been interesting. But back to your question. I have test driven both engines in the trim I want. Both are great engines. I don’t think either one is better than the other. But for me. I just can’t help myself. I had to have the 6.2. So that’s the one I ordered. It’s got more power. I love the 10 speed transmission. And it’s perfect for me. I can’t wait until it arrives at my local dealer. Just my .02. 

[TXGREEK]

Reality is that the 6.2 gives more bang per cubic inch than the 5.3. Personally, my experience has proven the 6.2L gives more mpg’s than my 5.3 ever did and lots more smiles per mile than any 5.3 could ever give. Only negative with the 6.2 is tread life [emoji23]


Sent from Above

[superhighsierra]

On 5/29/2020 at 1:37 AM, Yondu said:

As long as you can come in and tell everyone everything you have is the bestest cause you're the bestest with no disagreements you're chipper. If not, they're cockroaches.  Irony much?  

 

I think you nailed it. These are the guys in life who purchase the extended warranties, the same guys who have never turned a wrench a day in their lives, these guys are a dealers wet dream. Their truck will never see dirt a day in its life and they all drive 10 miles under the speed limit but yet they come on here to circle jerk about their "big 6.2's." Yet they will never get any of the benefit of having a 6.2 out of the vehicle but are over here with an "0-face" thinking of the raw-power of the 6.2... LMAO & GTFOH

 

It's the same $hit with the guys with AT4's who are circle jerking about their off-road capabilities. The same guys who have Crew Cabs and think they are better because they paid more for them lol. The same guys with $hitty ass 6" Rough Country lifts, Chinese wheels, etc who think their roller skate @ss looking truck looks good and is some sort of mechanical marvel. FOH.

 

I came on here from another platform and figured people would have knowledge to offer as I had never built out a half-ton. Don't get me wrong there are a few guys who know their stuff and who are actually doing cool stuff to their trucks, but for the overwhelming majority its just a bunch of guys who tuck in their t-shirts lubing each other up about stuff that they would get laughed out the building for elsewhere. 

 

On 5/29/2020 at 2:31 AM, TXGREEK said:

Are you an internet Troll? You’re envious because someone is expressing their personal experiences with products apparently out of your league? The discussion is about recommending a 5.3 or 6.2, not what others have or you can’t afford.

Now, either you’ve got something, anything constructive to add to the discussion, if not then I’m sure you’ll find somewhere you feel much more comfortable at.

Moving along now.....


Sent from Above

 

You do realize that a 6.2 costs $1500 more than a 5.3 right? You are insinuating people couldn't afford an extra $5/mo on their payment. You guys are the biggest group of fanny pack wearing, posers I have ever had the privilege of interacting with in my life. You do realize that the 6.2 only puts out 65 more HP than the 5.3? LOL change my manifold, put on a CAI and give me a performance exhaust and my 5.3 would produce better on the dyno. Give me a supercharger and my 5.3 would blow your 6.2 away on the dyno. If they ever figure out how to crack the CPU, chip my 5.3 and it will $hit on your 6.2. 

 

Edited May 30, 2020 by superhighsierra

[TXGREEK]

 

You do realize that a 6.2 costs $1500 more than a 5.3 right? You are insinuating people couldn't afford an extra $5/mo on their payment. You guys are the biggest group of fanny pack wearing, posers I have ever had the privilege of interacting with in my life. You do realize that the 6.2 only puts out 65 more HP than the 5.3? LOL change my manifold, put on a CAI and give me a performance exhaust and my 5.3 would produce better on the dyno. Give me a supercharger and my 5.3 would blow your 6.2 away on the dyno. If they ever figure out how to crack the CPU, chip my 5.3 and it will $hit on your 6.2. 

 

A bit more than average on the insecure side aren’t ya!

 

The thread is about benefits of either 5.3 or 6.2 and that’s off the lot. Why would anyone want to EVER invest in a supercharger for a 5.3 when you can get soooooo much more out of supercharging a 6.2.

 

Nice try, go back into the crack you came out of [emoji23] [emoji13] [emoji38]

 

Looks like this thread is in need of exterminating.....

 

Be safe and Good luck to all,

Sent from Above

[superhighsierra]

21 minutes ago, TXGREEK said:

A bit more than average on the insecure side aren’t ya!

 

The thread is about benefits of either 5.3 or 6.2 and that’s off the lot. Why would anyone want to EVER invest in a supercharger for a 5.3 when you can get soooooo much more out of supercharging a 6.2.

 

Nice try, go back into the crack you came out of

 

Looks like this thread is in need of exterminating.....

 

Be safe and Good luck to all,

Sent from Above

 

You read me like a book bruh. 

 

At the end of the day you'll are flexing on 65 HP at best. And I'm the insecure one lol. Great sense of humor BTW...

 

 

[Grumpy Bear]

On 5/20/2020 at 10:51 AM, Ferrari Eater said:

Which engine is better? I assume the 6.2 has more power and the 5.3 has better mpg, but how much of a difference is it?

Ya haven't said what you mean by better yet. 12 pages and no one knows what YOU mean by better. 

[Daly]

Couldn't get a 6.2 in a regular cab short box. Ergo 5.3 > 6.2...