Hood vents

[Day 2 C10]

Has anyone ever decided to run oem gm hood vents on our trucks? I got a second hood and I'm toying with grafting either 66 Chevelle vents or first gen Camaro vents for a OEM performance feel. Maybe even a Nova vent.

[special-K]

I've seen it done before. I guess they don't actually vent, but you want the look. I think the lay flat ones (1st & 3rd) would be your best bet. The others would be a lot of skilled work

[FRCvette]

Tha SS chevelle vents look awesome. Local bodyman here has done that by sectioning the two hoods. Quite a bit of work he says.

[un4gvn!]

I've seen the 70-72 Buick GS hood vents on a truck when I went to the GS Nationals in Bowling Green, Kentucky.

[72c20customcamper]

The Chevelle hood inserts would be a challenge. If you look at hood there is a ridge that runs through the middle of insert so it’s basically on two planes . And they are purely decorative no function at all

[1969LTX]

Super cool idea! My choise would be first gen camaro hood vents, with black inserts it would fit nice on red hood.

[SCOTI]

Agreed. Zero function as installed from the factory assembly line.

[Day 2 C10]

Note. Which ever will be functional as vents. I love the Chevelle style but agreed its going to take a lot of work

[Day 2 C10]

Otherwise, I thought about grafting a 70-72 Chevelle hood flapper with an electric motor.

[chewychevy67]

I'm not sure what these are from (asuming a gm car) but I did toy with the idea for adding these to my hood. Also I thought about keeping the raised area high to the center line , moving the vents slightly closer to the middle boddy line, and flowing it out into it leaving the front of the hood stock.

[CAMAROBOY68SS]

Originally Posted by chewychevy67

I'm not sure what these are from (asuming a gm car) but I did toy with the idea for adding these to my hood. Also I thought about keeping the raised area high to the center line , moving the vents slightly closer to the middle boddy line, and flowing it out into it leaving the front of the hood stock.

Those are 67 Chevelle SS inserts. For the Chevelle inserts 66 or 67, you would need a Chevelle hood to cut out the area where they mount and then weld them into you truck hood. The Camaro/Nova finned inserts pretty must just bolt in on a flat surface. The 68/69 Camaro "Ice Cube Trays" have a drain that need a extra hold but will bolt down flat. The ice cubes can be made into a functional vent easily, you just need to cut the access in the hood. Then you just leave out the metal back plate from the insert (they are 3 pieces, back plate, mesh, chrome piece). Only problem is the chrome will blue with any amount of engine heat. I have a 68 Camaro SS and the aftermarket inserts blued/yellowed due to no insulation on the hood over a couple years.

[SCOTI]

Originally Posted by CAMAROBOY68SS

Those are 67 Chevelle SS inserts. For the Chevelle inserts 66 or 67, you would need a Chevelle hood to cut out the area where they mount and then weld them into you truck hood. The Camaro/Nova finned inserts pretty must just bolt in on a flat surface. The 68/69 Camaro "Ice Cube Trays" have a drain that need a extra hold but will bolt down flat. The ice cubes can be made into a functional vent easily, you just need to cut the access in the hood. Then you just leave out the metal back plate from the insert (they are 3 pieces, back plate, mesh, chrome piece). Only problem is the chrome will blue with any amount of engine heat. I have a 68 Camaro SS and the aftermarket inserts blued/yellowed due to no insulation on the hood over a couple years.

Absolutely.... any of the GM offerings can be made as an exhaust vent as long as your OK w/water dropping down on the motor/electronics in that area.

[best view]

The 67 chevelle is the bomb should of had them on the supers with the 396 engine option now the flippers would be going crazy

[HO455]

Have you considered the 68 SS Chevelle version. I always felt that they looked more thought out like 65-70 GTO's and less "Let's bolt something on as cheap as possible. Which is what I think when I see the Icecube tray ones.

I'm an admitted Pontiac guy so I may be biased.

[Steeveedee]

If you're (OP) looking for bling, that's one thing. But if you're looking for performance, that's another. In '68, Buick made a cold air induction system that took air at the cowl and ducted it to the air cleaner. Good for a little horsepower. One could cut a hole in the radiator core support (or put an intake under the bumper) and run a duct, too. I had an '05 Corolla that I made a cold air induction system using ABS drain pipe from the hardware store. Didn't make it a barnstormer, of course, but I got 1% better mileage for about $8 worth of parts and a couple hours work. Paid for itself over the 10 years I owned it. I put the intake "scoop", made from a "tri" pipe adapter in the hole left by one of the unused driving lights. One thing that I really appreciated was better performance when it was 118° in the shade. The computer adjusts the mixture for ambient temperature, and when it's that hot, the car was really a dog. Stock, the air is taken in between the radiator and the battery. That cold air intake helped quite a bit with that.

[Myself]

You gotta think outside the box.....set yourself apart.

You can always make a sheet metal pan for the hood underside to direct water where you want.

[SCOTI]

Originally Posted by Myself

You gotta think outside the box.....set yourself apart.

You can always make a sheet metal pan for the hood underside to direct water where you want.

Yep. So easy everyone is doing it/anyone can do it.
Wait... how does the drain pan impact the effectiveness of the 'vents' ?

[CAMAROBOY68SS]

Originally Posted by SCOTI

Yep. So easy everyone is doing it/anyone can do it.
Wait... how does the drain pan impact the effectiveness of the 'vents' ?

well the most of these style of vents are not for sucking air in as air flows over the top, they are for allowing airflow that comes through the grill to exit smoothly than being trapped under the hood while it circulates to find a way towards the frame.

Look at a modern 5th or 6th gen Camaro and how their SS and ZL1 hoods function. I have a 2017 Camaro SS and the hood gills have a drip tray that funnel towards the radiator, so it then acts as a scoop under the hood that doesnt impact the air coming in while driving. There is then another drip pan on top of the radiator that catches what the hood drops and moves to each side of the motor.

[Andy4639]

I know this isn't what you want for the hood louvers but the under panel can keep the water off the motor and it works very well. I drive this truck in the rain a bunch not as much as I use to but it does get drove in the rain and I've never had a problem with water.

[72c20customcamper]

When I drive the Chevelle in the rain the engine gets wet anyways so it’s really not an issue if the hood vents leak a little too . If you’re trying to get the air out of the engine compartment an air dam under the bumper works well . It causes a lower pressure condition under the car/truck . I put a little SS piece I made under my Avanti and it cooled the motor firewall a great deal.

[KQQL IT]

Anything but a cowl hood would look great.

[SCOTI]

Originally Posted by KQQL IT

Anything but a cowl hood would look great.

Nothing wrong w/a cowl hood (a functional cowl hood). Slap a couple of heat extracting vents along the outer edges of the hood vs the stuff shown within this thread + a functional cowl induction set-up & I get it.

The GM stuff shown within this thread is nostalgic cool but that's about it.

[Day 2 C10]

Originally Posted by Steeveedee

If you're (OP) looking for bling, that's one thing. But if you're looking for performance, that's another. In '68, Buick made a cold air induction system that took air at the cowl and ducted it to the air cleaner. Good for a little horsepower. One could cut a hole in the radiator core support (or put an intake under the bumper) and run a duct, too. I had an '05 Corolla that I made a cold air induction system using ABS drain pipe from the hardware store. Didn't make it a barnstormer, of course, but I got 1% better mileage for about $8 worth of parts and a couple hours work. Paid for itself over the 10 years I owned it. I put the intake "scoop", made from a "tri" pipe adapter in the hole left by one of the unused driving lights. One thing that I really appreciated was better performance when it was 118° in the shade. The computer adjusts the mixture for ambient temperature, and when it's that hot, the car was really a dog. Stock, the air is taken in between the radiator and the battery. That cold air intake helped quite a bit with that.

So its going to be for function plus aesthetics it will not be how I take in air but how I plan to relive negative under hood pressure and heat. this truck is in every essence a muscle truck so with modern performance played down with retro aesthetics

[Day 2 C10]

Originally Posted by SCOTI

Absolutely.... any of the GM offerings can be made as an exhaust vent as long as your OK w/water dropping down on the motor/electronics in that area.

hey its a driver and hot rod I'm good with that, water don't hurt anything

[Day 2 C10]

Originally Posted by KQQL IT

Anything but a cowl hood would look great.

Yes agreed. Unpopular opinion, but I think they are truly ugly on most vehicles.
But again that's my opinion.