5.3 to 6.2 TB Swap?

[UAEdunes]

Hi, I came across this post

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View this content on Instagram

And couldn’t find anything here. The post is all in Arabic so couldn’t understand the details but looks like it’s possible to swap the 5.3 TB for 6.2 TB.

Thoughts? Any gains or waste of time?

I already have the S&B Filter so could easily change the elbow that came with the kit to 6.2

 

[Marky Dissod]

... waste of time ...

Short answer: Opening a wider mouth onto the same size engine is a waste of time.
Longer answer: I happen to know that, at the very least on older vehicles, this can lead to wearing out the transmission over time, without a tune.
When you open the smaller throttle body (let's say) 5%, the ecm expects a certain amount of air coming in, to make a certain amount of power (x).
The ecm tells the tcm this and the line pressures that keep the clutches together are based on that much power.

If you install the larger throttle body, when you open it 5%, it's inhaling more air than expected, making more power than expected,
which means the tcm is commanding not quite enough line pressure, which leads to slipping clutches, which leads to a transmission rebuild, sooner than hoped.

Moral of the story: get tuned.

 

[UAEdunes]

Thanks

 

[jerry455]

First, you will have to find someone who can tune a Global B architecture vehicle. I am not sure what that truck would have being an export.

 

[dkad260]

Short answer: Opening a wider mouth onto the same size engine is a waste of time.
Longer answer: I happen to know that, at the very least on older vehicles, this can lead to wearing out the transmission over time, without a tune.
When you open the smaller throttle body (let's say) 5%, the ecm expects a certain amount of air coming in, to make a certain amount of power (x).
The ecm tells the tcm this and the line pressures that keep the clutches together are based on that much power.

If you install the larger throttle body, when you open it 5%, it's inhaling more air than expected, making more power than expected,
which means the tcm is commanding not quite enough line pressure, which leads to slipping clutches, which leads to a transmission rebuild, sooner than hoped.

Moral of the story: get tuned.

Well said @Marky Dissod

This is what happened to our 2015 Impala. The transmission was "flaring" a little on occasion between shifts, usually 1-2,,& 2-3 shift. The intake boot was torn in the folds of the bellows and was on the bottom of the boot, out of sight. This is after the MAF and the PCM thought it had less air so less pressure for shifts.