upgrading CAI

[flyingfool]

I'm curious if any 6.2 owners can get me dimentions on your factory intake? i want to compare it to my 5.3 OEM Intake system. 

 

i'm planning on a 6.2 induction swap. and want to know if the 6.2 intake is bigger

[xSHIFTxNASTYx]

26 minutes ago, flyingfool said:

I'm curious if any 6.2 owners can get me dimentions on your factory intake? i want to compare it to my 5.3 OEM Intake system. 

 

i'm planning on a 6.2 induction swap. and want to know if the 6.2 intake is bigger

The throttle body boot will be different between the 5.3L and the 6.2L.  My K&N kit came with both, so really the CAI is the same but the boot for connecting up to the TB will be bigger on the 6.2L.

 

Missed the factory to factory swap, can't help you there, my bad.

[gfertig]

Which dimension do my you need? TB diameter?


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[flyingfool]

the airbox to MAF connection, 

[gfertig]

Pretty sure you mean the intake tube to throttle body connection. The OEM tube has an inner diameter of 3.75” that slips over the throttle body (intake to motor with butterfly valve). 2019 6.L.

FYI the OEM air box is junk. Recommend you go aftermarket. Or the OEM setup for the 5.7L will work better than the 6.2L setup. You want something that’s engineered for the motor to achieve a balanced improvement.

Good luck!


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[RaisedByWolves]

19 minutes ago, gfertig said:

Pretty sure you mean the intake tube to throttle body connection. The OEM tube has an inner diameter of 3.75” that slips over the throttle body (intake to motor with butterfly valve). 2019 6.L.

FYI the OEM air box is junk. Recommend you go aftermarket. Or the OEM setup for the 5.7L will work better than the 6.2L setup. You want something that’s engineered for the motor to achieve a balanced improvement.

Good luck!


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@gfertig

 

Why do you say the oem one is junk?

[CamGTP]

That's a big claim without data to back it.

 

Even GM with the new model trucks says their "performance" intake with calibration update is rated at like 10hp. If you can feel ~10hp in the butt dyno you must be the most special person on earth.

 

Just so you know, the aftermarket air intake systems are going to retain the same MAF housing diameter if they say no tuning required. If the tube is larger than stock or smaller than stock it would require tuning the second you installed the intake. The MAF calibration is designed around the stock airbox tube diameter.

 

Whatever happens after the MAF sensor really doesn't matter. Hence why airaid sells an aftermarket intake tube with zero baffles and so on. And the stock airbox is sealed away from the heat, so it does pull the air from the best place possible already. Add a high flow filter and some speed holes for more air into the front of the box if you want.

[SILVER SLED]

Pull the 5.3 intake box and remove the portion that seals against the inner fender and open up the area under the air horn portion, leaving the air horn and foam seal portion.  

[flyingfool]

2 hours ago, gfertig said:

Pretty sure you mean the intake tube to throttle body connection. The OEM tube has an inner diameter of 3.75” that slips over the throttle body (intake to motor with butterfly valve). 2019 6.L.

FYI the OEM air box is junk. Recommend you go aftermarket. Or the OEM setup for the 5.7L will work better than the 6.2L setup. You want something that’s engineered for the motor to achieve a balanced improvement.

Good luck!


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why is it junk, ?  how is aftermarket better?

[flyingfool]

1 hour ago, SILVER SLED said:

Pull the 5.3 intake box and remove the portion that seals against the inner fender and open up the area under the air horn portion, leaving the air horn and foam seal portion.  

this is what i plan on doing wth the 6.2 air intake along with 6.2 TB and manifold. i really need to start looking for a set of used 5.3 heads to have opened up ..then tune it all together  basically just collecting parts for now til i piece it all together

[Jacoby]

Just go aftermarket. Nothing to be gained by swapping stock intakes between trucks

[L86 All Terrain]

On 11/7/2019 at 5:29 AM, Jacoby said:

Just go aftermarket. Nothing to be gained by swapping stock intakes between trucks

I would agree, if your building a performance truck, there is little to be gained by modifying a OEM airbox besides saving a few dollars. I understand some people like the sealed OEM box but if you have to source an L86 airbox anyway, you might as well go aftermarket on the first try. Order a CAI for a 6.2L then swap out your intake and TB for the L86 units if you plan to already. The TB on the L83 is noticeable smaller as my CAI came with a reducer boot in case you wanted to run it on a 5.3L. The OEM intake system has a massive Yeti cooler-sized plastic box with no uniform shape right at the TB that I find impossible that it could flow better than a smooth tube. It's just a space for dead air to collect and quiet the intake noise. 

[flyingfool]

I always felt there was some performance qualities to the OEM Helmholtz resonator attached to the intake, besides tuning out the growl during WOT, I feel it might serve a purpose to the MAF sensor in calculating good airflow readings. But who am I just some goof, not an engineer...lol

[flyingfool]

....

[L86 All Terrain]

On 11/9/2019 at 3:09 PM, flyingfool said:

I always felt there was some performance qualities to the OEM Helmholtz resonator attached to the intake, besides tuning out the growl during WOT, I feel it might serve a purpose to the MAF sensor in calculating good airflow readings. But who am I just some goof, not an engineer...lol

I am sure GM has a purpose for it, but it is doubtful the purpose is improved HP and torque in my opinion after looking inside it, but I am no engineer either. My view is the quicker and smoother you can get air into the engine the better, rather than routing it through a maze before it ever hits the TB. The MAF on my AFE intake has never malfunctioned or giving me a CEL.