+100rwhp/tq 5.3L all stock with tune only

[CamGTP]

You're also going to tell me that the tune only moved the peak horsepower numbers down 800rpm too on a stock camshaft and stock converter????

 

You can't change that stuff and make peak horsepower magically drop that much. Peak values should still be around 5400-5600rpm on a stock camshaft.

 

And that it also made peak torque at 2,100rpm? Is thing a diesel now?? The stock crank numbers don't even make the peak 383ft lbs until 4,100rpm. But through the tires, driveshaft, transmission and transfer case it drops 2,000rpm and becomes a freaking monster brah.

What a bunch of garbage.

Edited October 30, 2020 by CamGTP

[Grumpy Bear]

17 hours ago, CamGTP said:

You're also going to tell me that the tune only moved the peak horsepower numbers down 800rpm too on a stock camshaft and stock converter????

 

You can't change that stuff and make peak horsepower magically drop that much. Peak values should still be around 5400-5600rpm on a stock camshaft.

 

And that it also made peak torque at 2,100rpm? Is thing a diesel now?? The stock crank numbers don't even make the peak 383ft lbs until 4,100rpm. But through the tires, driveshaft, transmission and transfer case it drops 2,000rpm and becomes a freaking monster brah.

What a bunch of garbage.

Take a breath Cam

 

 The rest of us need you.

 

 

 

 

 

[Pacfanweb]

On 10/29/2020 at 10:44 PM, CamGTP said:

That's a bunch of crap. A stock 5.3 on the dyno should do roughly 300/330ish with ease. That is factoring in a ~15% drivetrain loss.

 

I agree that the final numbers are more normal looking but the torque seems a little high. Gaining ~15-20hp on a really good tune on 93 octane seems about right.

 

 

355hp at the crank minus a loss of 20%-ish, means 270 range at the wheels.   I agree that 213 is very poor, but no stock 5.3 is going to make 300-330 at the wheels.   You'd be lucky to get 330 AFTER the tune.  

[dieselfan1]

This is funny

[CamGTP]

6 hours ago, Pacfanweb said:

355hp at the crank minus a loss of 20%-ish, means 270 range at the wheels.   I agree that 213 is very poor, but no stock 5.3 is going to make 300-330 at the wheels.   You'd be lucky to get 330 AFTER the tune.  

I was meaning 300hp and 330 ft lbs, not 330hp. I put the "/" in there to try get that across.

 

These engine will make around 300hp no problem on a good day on a dyno.

 

80% of 355 is 284 and 85% is 300, drivetrain loss is right around that ~15% in 2WD.

[lucas287]

This reminds of the redneck at the gas station the other night. He had a '98 Camaro LS1 with the t tops off. This thing had open headers and a pretty good size cam. Probably 23x or so. It was choppin' pretty hard but probably because it wasn't tuned worth a damn. I strolled by and said "hey man sounds pretty good, nice cam. What size is it? About a 230-something?" He just looked back at me all serious and chuckled "it's close to 300 man". 

 

I'm sure he's the same guy who would believe he got 100 hp from a tune. 

[CamGTP]

I'm surprised he didn't just say it was a 3/4 race cam.

[M1ck3y]

It's obviously bull ******. I'm just trying to wrap my head around how they stay in business..

[gbaby99]

i made 550hp and 460to the wheel with my procharged 2018 crew cab silverado im selling my unit if anybody is interested its for a L83

[COP TZR]

I have been blocked from viewing all of those posts and blocked from commenting on any post.

The shop has held firm on their statements. May need to stop by like they offered to witness in person.

 

Thanks everybody for the replies and input.

 

Was considering this tuner, quoted $800-$1000 last year for customers vehicle. Going to continue shopping around.

Edited February 2, 2021 by COP TZR

[COP TZR]

from a different shop using hub dyno

 

Edited February 8, 2021 by COP TZR

[COP TZR]

 

 

https://m.facebook.com/story.php?story_fbid=4035387786493610&id=994363517262734&m_entstream_source=video_home&player_suborigin=entry_point&player_format=permalink&anchor_composer=false

Edited February 8, 2021 by COP TZR

[COP TZR]

I posted this in the 2019-up group, but realized this is a "classic" model, so will share here.

 

Same Dyno shop as original post.

 

Here is a 2019, the same Dyno shop has posted this week.

 

Description shows "modified exhaust system" and "oversize over width tires/rims"

 

 

[SeekAndDestroy]

 

There is no way you got +150 torque unless it’s boosted. The curve is also suspiciously flat. 400 torque from 2000 rpm? 5.3 with heavy wheels, lol! I don’t believe that. This is my 6.2L with a BTR cam

Edited June 30, 2024 by SeekAndDestroy

[COP TZR]

On 6/30/2024 at 1:33 PM, SeekAndDestroy said:

 

There is no way you got +150 torque unless it’s boosted. The curve is also suspiciously flat. 400 torque from 2000 rpm? 5.3 with heavy wheels, lol! I don’t believe that. This is my 6.2L with a BTR cam

 

 

Agree. That local shop has posted stuff like this for years. It looks the latest graph should be for an overdriven roots blower. Your graph looks realistic and I would trust Davenport. I only post this to confirm I'm not crazy and to read others opinions.