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5.3 vs 6.2 drag race

19AT4
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TNTSierra Senior Enthusiast

TNTSierra

Posted
Posted
4 hours ago, BloodRedSkies737 said:

I'm just happy to see people at least discussing these trucks. My '21 LTZ is my first truck and I love it. The 6.2 /10 speed combo is really impressive because I had not driven a truck in about 15 years. It needed to have good enough power to get out of it's own way, reasonable gas mileage, and comfy technology. This really does all of that. Clearly the 6.2 sharing the long block with the LT1 is the big dog, but from what it looks like they have really done a nice job bringing the 5.3 along too. My other cars are a C8 & C5 so I couldn't do the 5.3. I'm curious what other little things every one has done that shave a few tenths off. 

A cat back exhaust is the biggest gain because it gets rid of the terrible flappers in the stock exhaust. A CAI is another gain. 
I chose a Corsa Catback Exhaust and S&B CAI for my High Country. Range makes a new Pulsar LT that disables DFM/auto start-stop, let’s you play with throttle sensitivity and much more. Otherwise it’s over $3k to tune these new T1s and you can’t return it back to stock from a hand held tuner like you could the K2s. 

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19AT4
19AT4

I've always been curious and I couldn't find any videos with a new gen 5.3 up against a 6.2.  I was a bit surprised to be honest, here's the results.... the density altitude was around 5000ft above se

KARNUT
KARNUT

Most of the time since I started driving I would trade for the next one because of HP increases. Every truck I did mods to increase power up to supercharging. All had tunes of some kind. Finally my 20

swathdiver
swathdiver

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BloodRedSkies737 Enthusiast

BloodRedSkies737

Posted
Posted
3 hours ago, TNTSilverado said:

A cat back exhaust is the biggest gain because it gets rid of the terrible flappers in the stock exhaust. A CAI is another gain. 
I chose a Corsa Catback Exhaust and S&B CAI for my High Country. Range makes a new Pulsar LT that disables DFM/auto start-stop, let’s you play with throttle sensitivity and much more. Otherwise it’s over $3k to tune these new T1s and you can’t return it back to stock from a hand held tuner like you could the K2s. 

Do you feel like the CAI and Cat back made a difference? Sound and power? I mean the engine stock sounds so muffled and quiet it's clearly being choked off. This is my daily so I probably won't tune it, but clearly GM knows they choked it off because they offer those two and quote gains with them. I wish they had some form of NPP exhaust like on my C8 where I could change it on the fly. I'm going to have to keep listening to the cat backs because it's that right balance or loud enough for your daily, but not having drone on a 500 mi drive. The Corsa and Borla are some of the better I've heard. 

Silverado4x4 Senior Enthusiast

Silverado4x4

Posted
Posted
14 hours ago, TNTSilverado said:

Lol. I quoted you because you obviously don’t understand what a couple means. Which is “2” and even from-stop light to stop light you’re looking at getting up to 40 to 50 mph. Which would be more than a “couple” tenths.   I suggest you watch This clip from TFL and  see the difference.  See how the 6.2L takes off compared to the 5.3L.   I rest my case and I didn’t draw a picture, I gave you a video so you truly can understand and comprehend! 

 

HAHA I get a kick out these threads. They had the 5.3 in a Trailboss with bigger heavier tires racing a Silverado 6.2 with lighter street tires, no comparison. Who in the hell gives a $hit on whos truck is faster.

  • Like 2
TNTSierra Senior Enthusiast

TNTSierra

Posted
Posted (edited)
1 hour ago, Silverado4x4 said:

HAHA I get a kick out these threads. They had the 5.3 in a Trailboss with bigger heavier tires racing a Silverado 6.2 with lighter street tires, no comparison. Who in the hell gives a $hit on whos truck is faster.

I do and obviously others do too!!  That’s why they do it. To each their own.

I don’t have the ability right now in my life to have a sports car. I have a lake house, 2 fast jet skis, and a fast boat. I need a TRUCK to pull them. So I want a relatively fast truck to do the job. This is the fastest truck GM makes as of now that is stock and not paying $80k extra for a Yenko Silverado. 
For a stock truck it does pretty well and can return 20+ mpgs on the highway. It’s a win win for me. 
Now my goal is to get a ZL1 convertible but priorities come first mainly my wife and kids.  So the truck suffices me for now. I am hoping and praying GM comes out with another SS model supercharged of course, in their trucks and really ups the game. Also bring out a supercharged off-road version for the gentlemen that like that type of truck as well. 
Have a great weekend. 

Edited by TNTSilverado
TNTSierra Senior Enthusiast

TNTSierra

Posted
Posted (edited)
1 hour ago, BloodRedSkies737 said:

Do you feel like the CAI and Cat back made a difference? Sound and power? I mean the engine stock sounds so muffled and quiet it's clearly being choked off. This is my daily so I probably won't tune it, but clearly GM knows they choked it off because they offer those two and quote gains with them. I wish they had some form of NPP exhaust like on my C8 where I could change it on the fly. I'm going to have to keep listening to the cat backs because it's that right balance or loud enough for your daily, but not having drone on a 500 mi drive. The Corsa and Borla are some of the better I've heard. 

Yes it made a big difference in drivability, throttle response, and sound. The Corsa is whisper quiet when cruising on the interstate or highway, but when you hit the accelerator, it comes alive. GM partnered with Borla for their performance exhaust system and it is also very nice from what other guys have stated on this site. Idk if you can go wrong either way. 
Another gentlemen by the name of OnTheReel has great data on the gains he had made from adding his exhaust and CAI. I believe it’s around 3 to 4 tenths.  Don’t quote me, but I just use a phone app and saw that gain in my truck. 
 

Edited by TNTSilverado
steelcity Enthusiast

steelcity

Posted
Posted
1 hour ago, Silverado4x4 said:

Who in the hell gives a $hit on whos truck is faster.

Well apparently some corn fed sod buster who's embarrassed of the length/strength of his manhood does, LOL LOL!

BloodRedSkies737 Enthusiast

BloodRedSkies737

Posted
Posted
1 hour ago, TNTSilverado said:

Yes it made a big difference in drivability, throttle response, and sound. The Corsa is whisper quiet when cruising on the interstate or highway, but when you hit the accelerator, it comes alive. GM partnered with Borla for their performance exhaust system and it is also very nice from what other guys have stated on this site. Idk if you can go wrong either way. 
Another gentlemen by the name of OnTheReel has great data on the gains he had made from adding his exhaust and CAI. I believe it’s around 3 to 4 tenths.  Don’t quote me, but I just use a phone app and saw that gain in my truck. 
 

I'll try and do dragy results before and after scientifically as I can. I just ordered a Rotofab intake they were having 60 bucks off sale this week. It would be interesting to see if someone with the 5.3 or other engines respond the same to give every one real data. The dragy seems like a reasonable tool to compare results so far. 

TNTSierra Senior Enthusiast

TNTSierra

Posted
Posted
37 minutes ago, BloodRedSkies737 said:

I'll try and do dragy results before and after scientifically as I can. I just ordered a Rotofab intake they were having 60 bucks off sale this week. It would be interesting to see if someone with the 5.3 or other engines respond the same to give every one real data. The dragy seems like a reasonable tool to compare results so far. 

Congrats on your purchase. I’ve heard good things about Rotofab. Let me know how your results end up with and without CAI. Enjoy. 

OnTheReel Senior Enthusiast

OnTheReel

Posted
Posted
7 hours ago, BloodRedSkies737 said:

I'll try and do dragy results before and after scientifically as I can. I just ordered a Rotofab intake they were having 60 bucks off sale this week. It would be interesting to see if someone with the 5.3 or other engines respond the same to give every one real data. The dragy seems like a reasonable tool to compare results so far. 

I dropped a couple tenths to sixty on average with the Roto-Fab. Did everything as scientific as possible and posted everything, but some of the numb-nut trolls here still think that CAI’s are a waste. You can’t tell them anything so I don’t bother.

 

Anyway, I put the GM catback on right after purchase so the only comparative figures I have are between stock intake with catback, and Roto-Fab with catback. You’ll be happy with it though. Even if only for the look. Drivability has also been perfect, had it since it came out in October 2019. Never any lights or other issues.

 

575FBABE-5C43-489D-A04C-DF2CB48FF1C5.thumb.jpeg.4fc2a5b2b21ac1c3c0c42efd1aa1095e.jpeg

 

Agree with @TNTSilverado...you’ll want to seriously consider a catback to open the other end up. The GM exhaust is good for 13hp so it’s not insignificant.
 

By the way, the Dragy is extremely accurate, but you do need to try extra hard to match conditions to get a direct comparison...mainly air temperature which directly affects horsepower. The pass you posted was extremely cold. May have been a little bad for traction but very good for power.

  • Like 1
Philbert Enthusiast

Philbert

Posted
Posted
On 1/29/2021 at 11:42 AM, BloodRedSkies737 said:

I'll try and do dragy results before and after scientifically as I can. I just ordered a Rotofab intake they were having 60 bucks off sale this week. It would be interesting to see if someone with the 5.3 or other engines respond the same to give every one real data. The dragy seems like a reasonable tool to compare results so far. 

I had a 5.3l 2018 sierra 1500 denali and just bought a 2021 Sierra 1500 AT4 with the 6.2L. After driving them both, I can say the 6.2 is a lot faster then the 5.3 in real life situations.  The throttle response is incredible.  Is it much faster off the line, no. But it has the power and response when you need it most. 

Tigerwitha88 Enthusiast

Tigerwitha88

Posted
Posted

The new 5.3 are stronger than just a few years ago, much more than the hp rating.

I had a 2013 5.3 6sp 315 hp. Currently have a 2020 5.3 w/8 spd and the power difference feels more like a 75-80hp gain vs the 30hp on paper. Perhaps its the transmission.

TNTSierra Senior Enthusiast

TNTSierra

Posted
Posted (edited)
On 2/6/2021 at 3:54 PM, Tigerwitha88 said:

The new 5.3 are stronger than just a few years ago, much more than the hp rating.

I had a 2013 5.3 6sp 315 hp. Currently have a 2020 5.3 w/8 spd and the power difference feels more like a 75-80hp gain vs the 30hp on paper. Perhaps its the transmission.

Yes it’s the transmission programming that’s the biggest difference. Along with a little weight reduction do to the use of aluminum. For 355HP and 383TQ it performs so much better than the K2 5.3L. 
 

car and driver tested a 2016 5.3L with 8 spd at 7.2 secs. And a new 2019 RST 5.3L with 8 spd at 6.1 secs.  That a huge difference. All without changing HP/TQ

Edited by TNTSilverado
econometrics Senior Enthusiast

econometrics

Posted
Posted
2 hours ago, TNTSilverado said:

And a new 2019 RST 5.3L with 8 spd at 6.1 secs.  That a huge difference. All without changing HP/TQ

I'm not questioning YOU, but that 6.1 run with a 2019 is BS. Unless they were going down a 10% grade with a tailwind. ? 

TNTSierra Senior Enthusiast

TNTSierra

Posted
Posted (edited)
2 hours ago, econometrics said:

I'm not questioning YOU, but that 6.1 run with a 2019 is BS. Unless they were going down a 10% grade with a tailwind. ? 

Here ya go!

 

just stating the facts from C & D

 

https://www.caranddriver.com/reviews/a25016363/2019-chevy-silverado-1500-by-the-numbers/

 

here is the other one 

 

https://www.caranddriver.com/reviews/a15103553/2016-chevrolet-silverado-1500-z71-53l-8-speed-automatic-test-review/

 

Edited by TNTSilverado
SILVER SLED Senior Enthusiast

SILVER SLED

Posted
Posted (edited)

When I was at the track and ran a 13.61-yes, I just had to throw that in there-, there was a guy with a ‘20 5.3 8 speed double cab LT 4wd that ran a 14.7. It was stock also.  

Edited by SILVER SLED

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