ZL1 Ram Air

JSH · 09-08-2023, 02:49 PM

I had the car apart recently and took a real close look at how the air gets from the front grill to the, in my case, Big gulp box, and frankly, it looks pretty haphazardly designed and built. So I've decided to buy a Velossa ram air intake, and make a few other minor changes to the air passageway to the BG inlet to route true high-speed cold air rather than air bouncing off the radiator.

The ram air business is huge and it wasn't until recently that this occurred to me as needed for this car

ZL1...SON · 09-08-2023, 02:51 PM

I installed one on my car... it definitely made a huge difference in how quickly my IATs drop after sitting still idling anywhere. After installation, my IATs are generally the same as outside air temp.

WhiteMale · 09-08-2023, 03:57 PM

With your mods i still think its negligible

JSH · 09-08-2023, 04:23 PM

I believe what got me thinking about air was taking a close look at the Garage 56 LeMans ZL1; air ducts make up at least half of the entire underhood area

Z OH 6 · 09-08-2023, 05:36 PM

Quote:

Originally Posted by JSH

I believe what got me thinking about air was taking a close look at the Garage 56 LeMans ZL1; air ducts make up at least half of the entire underhood area

That car also raced for 24 hours straight.

JSH · 09-08-2023, 06:01 PM

Another thing that got my attention was the poor seal at the Big Gulp perimeter , which had to result in hot engine compartment air being drawn in. I've sealed it which means more air from the grille.

hawk02 · 09-09-2023, 07:48 AM

While I have no data to back up my claim, I do believe you get MOST of the benefits of the Velossa Ram Air intake by just removing the rain/snow blocker behind the upper grill and driver's side headlight.

Like the Velossa, it provides a more direct path to the air box. It just doesn't funnel the air as efficiently as the Velossa.

It seems with the rain/snow blocker removed, the engine builds boost a little faster (not more boost) which gives the car a subtle but noticeable extra grunt at lower RPMs. As the OP stated, IATs drop quicker from a traffic stop.

As I said, I have no data to back these claims. They're strictly observational from having the rain/snow block removed for the past 3-4 years.

If you're not planning to drive your car in a blizzard or hurricane it's well worth removing in my opinion.

JSH · 09-09-2023, 09:06 AM

Quote:

Originally Posted by hawk02

... I do believe you get MOST of the benefits of the Velossa Ram Air intake by just removing the rain/snow blocker behind the upper grill and driver's side headlight...

In trying to route more air from the grille to the intake area, I'm embarrassed to say I had not thought of this great idea. Have you seen a video on its removal? I never drive the car in the rain, snow, night, etc.

Booher · 09-09-2023, 09:35 AM

I did this a while ago with my ss. You can pull your bumper or pull off the radiator shield. If you remove shield, you have to remove the hood latch on the car so make sure to mark its position.

09-08-2023, 02:49 PM	#1
JSH Drives: '20 ZLE Join Date: Jun 2020 Location: Mile High Posts: 3,565	ZL1 Ram Air I had the car apart recently and took a real close look at how the air gets from the front grill to the, in my case, Big gulp box, and frankly, it looks pretty haphazardly designed and built. So I've decided to buy a Velossa ram air intake, and make a few other minor changes to the air passageway to the BG inlet to route true high-speed cold air rather than air bouncing off the radiator. The ram air business is huge and it wasn't until recently that this occurred to me as needed for this car __________________ '20 ZL1 1LE A10, OEM short block, LME heads/valve train, E2650. 100+ octanes, no eth, no meth, no N2O. 2/23 - 1031/1004 wheel. 4/23 - 1.41/9.61/145 at DA 7000 ft. (only made five passes). 2/24 - LME 390, E2650, FBO, 100 oct.; 1116hp/ 1063tq; 109 oct. dyno next.

09-08-2023, 02:51 PM	#2
ZL1...SON Drives: 2021 Camaro ZL1 Join Date: Mar 2023 Location: NW Arkansas Posts: 39	I installed one on my car... it definitely made a huge difference in how quickly my IATs drop after sitting still idling anywhere. After installation, my IATs are generally the same as outside air temp. __________________ 2021 Camaro ZL1 Satin Steel Metallic Rotofab CAI, Banks Idash, AEM X series wideband, CSP 2" headers, Jet hot 2500 ceramic coating, DSX Flex Fuel Sensor, DMS Fender Tank, Velossatech Big Mouth, JMS Fuel Booster, MPI Billet Lid, Jokerz race port, 2.30" upper, 107mm Soler TB, 160°F Billet DMS, Big Gulp, LPE Big Bore HPFP, XDI +30, ECM & TCM tuned by Elite Tuned, Atturo 315 AZ850DR

09-08-2023, 04:23 PM	#4
JSH Drives: '20 ZLE Join Date: Jun 2020 Location: Mile High Posts: 3,565	I believe what got me thinking about air was taking a close look at the Garage 56 LeMans ZL1; air ducts make up at least half of the entire underhood area __________________ '20 ZL1 1LE A10, OEM short block, LME heads/valve train, E2650. 100+ octanes, no eth, no meth, no N2O. 2/23 - 1031/1004 wheel. 4/23 - 1.41/9.61/145 at DA 7000 ft. (only made five passes). 2/24 - LME 390, E2650, FBO, 100 oct.; 1116hp/ 1063tq; 109 oct. dyno next.

09-08-2023, 06:01 PM	#6
JSH Drives: '20 ZLE Join Date: Jun 2020 Location: Mile High Posts: 3,565	Another thing that got my attention was the poor seal at the Big Gulp perimeter , which had to result in hot engine compartment air being drawn in. I've sealed it which means more air from the grille. __________________ '20 ZL1 1LE A10, OEM short block, LME heads/valve train, E2650. 100+ octanes, no eth, no meth, no N2O. 2/23 - 1031/1004 wheel. 4/23 - 1.41/9.61/145 at DA 7000 ft. (only made five passes). 2/24 - LME 390, E2650, FBO, 100 oct.; 1116hp/ 1063tq; 109 oct. dyno next.

09-09-2023, 07:48 AM	#7
hawk02 Coupe Newbie Drives: 2017 ZL1, 2021 Corvette Convertible Join Date: Jul 2011 Location: Columbus, Ohio Posts: 3,283 View My Garage	While I have no data to back up my claim, I do believe you get MOST of the benefits of the Velossa Ram Air intake by just removing the rain/snow blocker behind the upper grill and driver's side headlight. Like the Velossa, it provides a more direct path to the air box. It just doesn't funnel the air as efficiently as the Velossa. It seems with the rain/snow blocker removed, the engine builds boost a little faster (not more boost) which gives the car a subtle but noticeable extra grunt at lower RPMs. As the OP stated, IATs drop quicker from a traffic stop. As I said, I have no data to back these claims. They're strictly observational from having the rain/snow block removed for the past 3-4 years. If you're not planning to drive your car in a blizzard or hurricane it's well worth removing in my opinion. __________________

09-08-2023, 03:57 PM	#3
WhiteMale Drives: 23 ZL1 A10 Rapid Blue Join Date: Aug 2020 Location: MO Posts: 1,992	With your mods i still think its negligible

09-09-2023, 09:35 AM	#9
Booher Drives: 2019 zl1 6 speed Join Date: Jul 2017 Location: Lake Havasu Arizona Posts: 981	I did this a while ago with my ss. You can pull your bumper or pull off the radiator shield. If you remove shield, you have to remove the hood latch on the car so make sure to mark its position.

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