Throttle Body from Apex

[OVERPAR73]

Which TB would you recommend for my 2013 ZL1 with the RotoFab, GT9 cam and pulleys?

[Apex Motorsports]

Originally Posted by OVERPAR73

Which TB would you recommend for my 2013 ZL1 with the RotoFab, GT9 cam and pulleys?

The VMAX ZL1 spiral ported throttle body produces very strong gains.

[keving2873]

The throttle body really helps out with the low speed bucking from the cam. It does not completely eliminate it, but it is much easier to handle at parking-lot speeds now.

Is there any diameter difference between stock and ported? I feel because it's called a "ported" throttle body that implies that the answer to my question would be yes, but I couldn't really see a difference between the two.

[Apex Motorsports]

Originally Posted by keving2873

The throttle body really helps out with the low speed bucking from the cam. It does not completely eliminate it, but it is much easier to handle at parking-lot speeds now.

Is there any diameter difference between stock and ported? I feel because it's called a "ported" throttle body that implies that the answer to my question would be yes, but I couldn't really see a difference between the two.

Obviously the outside diameter is the same but there is a lot of material removed from the inside. In the photo below the VMAX ported throttle body is closest to the camera and the stock one is farthest. If you look at the rim you can see how much finer the edge is and how the inside has a completely different profile. It is usually hard to capture the spiral and texture machined into them in pictures but the light worked in my favor on this shot.

[keving2873]

Yeah the spirals were about all I could see, but I didn't think about looking at the rim to see a difference. This picture helps a lot. Thanks Chase.

[Apex Motorsports]

Originally Posted by keving2873

Yeah the spirals were about all I could see, but I didn't think about looking at the rim to see a difference. This picture helps a lot. Thanks Chase.

No problem. If you notice on the stock TB there is a line where is looks frosted above and shiny below. Everything above that line is like a large beveled edge. The porting removes all that material so it is a seamless turbulence free environment.

[Fiji24]

What kinda tb should I get for my 2010 l99 with catback exhaust?

[PalmerGA]

Originally Posted by Apex Chase

That is why the mod bug is so dangerous. You install something and fall in love but over time it becomes the norm. Then the hunt is on for the next thing.

True, but that's also the beauty of these Gen5 Camaros - tons of other mods available. You can pretty much get anything you can think of!

[Apex Motorsports]

Originally Posted by Fiji24

What kinda tb should I get for my 2010 l99 with catback exhaust?

VMAX spiral ported throttle body. They are on our website under the "Induction" section with the air intakes. If you have any other questions let me know.

Originally Posted by PalmerGA

True, but that's also the beauty of these Gen5 Camaros - tons of other mods available. You can pretty much get anything you can think of!

No doubt about that. At this point you can upgrade anything you want to on these cars.

[KevHao]

Do I need a lift to install the throttle body? Newbie here...sry for trouble

[Apex Motorsports]

Originally Posted by KevHao

Do I need a lift to install the throttle body? Newbie here...sry for trouble

No, not at all. All you do is pop the hood and you are looking right at it.

[KalCorp]

Whats the 101 on the Different sized TB's?

102mm and 95mm?

Update: just found this
95mm for slightly modified cars or 102mm (includes 1/4" Adapter Plate) for supercharged and highly modified Camaro's.

What best for a L99 getting a cam and maybe a Whipple in future? 102mm? but will that be ok now without the Cam and SC?

[Apex Motorsports]

Originally Posted by KalCorp

Whats the 101 on the Different sized TB's?

102mm and 95mm?

Update: just found this
95mm for slightly modified cars or 102mm (includes 1/4" Adapter Plate) for supercharged and highly modified Camaro's.

What best for a L99 getting a cam and maybe a Whipple in future? 102mm? but will that be ok now without the Cam and SC?

You really need to decide what direction and how far you are going to go with your build before you get into looking at larger throttle bodies. Porting the stock 90mm is probably all you will ever need. There are a lot of ZL1s making big numbers on their 87mm throttle bodies so size is not always needed.