My son bought me a Vmax ported LS3 throttle body for Christmas. (The boy is definitely a keeper!) In my infinite wisdom I decided that I could do the install myself.
First thing you need to know is that I am most definitely not a mechanic. I have never changed the oil or done a brake job on any of my vehicles. If it counts, once I changed the battery in my Harley.
Anyway first thing I did was check You Tube for installation videos. (How did anyone work on anything before You Tube?) Anyway this was the best / closest video I could find. Don't pay too much attention to his dyno numbers. I think the more engine mods you have the less difference a ported throttle body makes.
Yeah I know it is for a Camaro, but I figured one 2016 LS3 is pretty much like another. The only thing that really off is that I think he has a CAI installed. That means that the air piping was slight different.
Tools needed;
7 mm socket for the intake air tube
10 mm socket for the throttle body itself
1/4" socket (I think a 3/8" socket may encourage over tightening)
Procedure
1) Loosen, but do not remove band clamps on air intake tubing at front of throttle body and exit of the air cleaner casing.
2) Remove engine cover. Lift up from front end and then back.
3) Slide air tubing apart at both locations and bend entire assembly up about 120 degrees. This will get it mostly out of the way.
4) Carefully remove electrical connection plug on left side of throttle body. Clip is located on the front of the connector.
5) Loosen and remove 4 each 10 mm bolts holding throttle body in place.
6) Remove throttle body.
Installation is exactly back wards from the removal.
The entire job takes about 15 minutes or 1 maybe 2 beers.
My car started up flawlessly and immediately settled down to a smooth 750 rpm idle with a small lope. No problems no fault codes.
I took the car out for a spirited test ride afterward. My butt dyno says maybe the car pulls a little harder. Not a night a day kind thing, but I don't think I was imagining it. I will say that in my opinion the 2016 has felt a bit quicker than the 2014 did.
I took some side by side pics of the 2 throttle bodies. I must say that for some reason I always thought that step in the OEM unit was more pronounced. The Vmax is definitely more streamlined and smoother, but the difference was just not as great as I expected.
Have a look for yourselves. The Vmax is on the right.


First thing you need to know is that I am most definitely not a mechanic. I have never changed the oil or done a brake job on any of my vehicles. If it counts, once I changed the battery in my Harley.
Anyway first thing I did was check You Tube for installation videos. (How did anyone work on anything before You Tube?) Anyway this was the best / closest video I could find. Don't pay too much attention to his dyno numbers. I think the more engine mods you have the less difference a ported throttle body makes.
Yeah I know it is for a Camaro, but I figured one 2016 LS3 is pretty much like another. The only thing that really off is that I think he has a CAI installed. That means that the air piping was slight different.
Tools needed;
7 mm socket for the intake air tube
10 mm socket for the throttle body itself
1/4" socket (I think a 3/8" socket may encourage over tightening)
Procedure
1) Loosen, but do not remove band clamps on air intake tubing at front of throttle body and exit of the air cleaner casing.
2) Remove engine cover. Lift up from front end and then back.
3) Slide air tubing apart at both locations and bend entire assembly up about 120 degrees. This will get it mostly out of the way.
4) Carefully remove electrical connection plug on left side of throttle body. Clip is located on the front of the connector.
5) Loosen and remove 4 each 10 mm bolts holding throttle body in place.
6) Remove throttle body.
Installation is exactly back wards from the removal.
The entire job takes about 15 minutes or 1 maybe 2 beers.
My car started up flawlessly and immediately settled down to a smooth 750 rpm idle with a small lope. No problems no fault codes.
I took the car out for a spirited test ride afterward. My butt dyno says maybe the car pulls a little harder. Not a night a day kind thing, but I don't think I was imagining it. I will say that in my opinion the 2016 has felt a bit quicker than the 2014 did.
I took some side by side pics of the 2 throttle bodies. I must say that for some reason I always thought that step in the OEM unit was more pronounced. The Vmax is definitely more streamlined and smoother, but the difference was just not as great as I expected.
Have a look for yourselves. The Vmax is on the right.

