2019 6.2 Silverado Throttle Body/Intake Manifold Upgrades

humantorchneedsabankloan · May 1, 2023

Hey, I've got a 2019 Silverado with the 6.2L. I want to upgrade the throttle body and intake manifold for some more horsepowers. Has anyone done this on there 6.2? All i am seeing online is throwing the 6.2 manifold on a 5.3. Thanks in advance.

CamGTP · May 1, 2023

What are you going to gain though?

The 6.2 can't even outflow the stock size throttle body as it sits. Just look at the corvette and camaro, they make more power than the truck version of the 6.2 with basically the same throttle body. You aren't being held back at all with the stock intake and throttle body.

You want more power, start modding the engine. Swap the camshaft, add in some E85 fuel with a custom tune, that will give you more power.

dieselfan1 · May 1, 2023

1 hour ago, CamGTP said:

What are you going to gain though?

The 6.2 can't even outflow the stock size throttle body as it sits. Just look at the corvette and camaro, they make more power than the truck version of the 6.2 with basically the same throttle body. You aren't being held back at all with the stock intake and throttle body.

You want more power, start modding the engine. Swap the camshaft, add in some E85 fuel with a custom tune, that will give you more power.

How "does" the vette make 75 more hp Cam?

CamGTP · May 2, 2023

I'm referencing the LT1 version, the latest corvette uses a different engine.

Different camshaft design, VVT tuning and the car intake is made for high rpm horsepower.

The truck intake is best for a truck, keeps the torque down low where you want it. Both engines make the same torque figure but the trucks torque curve starts lower and peaks lower because of the truck camshaft and intake design. The LT1 engine makes 35 more horsepower because of the different camshaft and car intake manifold.

The stock truck intake manifold and throttle body can make a good amount of power with the right combo. Bigger camshaft, some headers and running a E85 mixture can gain a lot. Wouldn't be hard to pick up 40-50 wheel horsepower doing that. Probably put that engine at 480+ crank horsepower.

Edited May 2, 2023 by CamGTP