[Carousel72TRed]

I have a 69 Ram Air 3 Air Cleaner and I want to make sure I hook up the vacuum side of the system correctly. I believe the way to hook it up is run a line from a vacuum port on the intake manifold to one of the two ports on the thermal sensor located in the air cleaner base and then hook up a line from the other port on the sensor and run it to the two autotherm heat diaphragms located inside the ram air hood plate. And when you first start the car do the heat diaphragms initially close and once the intake air temperature is warm they will open?

Thank You
Carousel72TRed

[north]

I'm a visual guy but all this sounds correct.

[Ram Air IV Jack]

Originally Posted by Carousel72TRed

I have a 69 Ram Air 3 Air Cleaner and I want to make sure I hook up the vacuum side of the system correctly. I believe the way to hook it up is run a line from a vacuum port on the intake manifold to one of the two ports on the thermal sensor located in the air cleaner base and then hook up a line from the other port on the sensor and run it to the two autotherm heat diaphragms located inside the ram air hood plate. And when you first start the car do the heat diaphragms initially close and once the intake air temperature is warm they will open?

Thank You
Carousel72TRed

Yes this is the correct hook-up. When cold, the diaphragms in the ram air hood do close to allow heated air from under the hood to enter the carb. I'm not sure what temperature they open at but there is a bimetal strip in the sensor that reacts to temperature. When warm, it bleeds off the vacuum and the diaphragms open. If the diaphragms close when cold, close the hood for a few minutes and then open the hood to see if the diaphragms opened when the motor warmed up.

[Carousel72TRed]

Thank You RamAir4Jack,

I am having one other problem when I put the air cleaner on and drive the car. I have a Holley 750 carb on the car and the idle goes up. I don't know if it is because the bottom of the pan is hitting or interfering with the throttle linkage (can't tell with air cleaner on). I only put the Ram Air Cleaner on for show at car shows and then drive home with it on. I normally have a 17" Summit Air Cleaner on the car.

Carousel72TRed

[dataway]

It could be running more efficiently at idle with the OEM air cleaner installed so the idle goes up. The OEM air cleaners from what I've heard offer considerably smoother air flow into the carb than aftermarket units.

[tulipsoftball]

I recently acquired a 1970 GTO convertible (which has not yet been delivered) and wish to add Ram Air III. Or it could be RAIV if that made more sense. It has a rebuilt 400 engine and is extremely stock. First I was told that I needed to make the hood scoops functional, and then I was told that I also needed to replace the heads, rear end, carburetor, manifold, headers, radiator, etc. Has anyone done this and can provide suggestions, resources, and costs? BTW, I reside in Denver, which could also be a factor. Yes, I am a newcomer to the forum, and I appreciate the direction.
dinosaur game

[Verdoro 68]

Depends how "correct" you want to make it. If it were me, I'd just add the upper and lower ram air pans, the scoops and the pull cable to open the scoops from inside and keep the engine as is. All of that stuff is available via repro.

[Scott Thelander]

Leave it alone n drive it ,….

[Verdoro 68]

Originally Posted by Scott Thelander

Leave it alone n drive it ,….

Or that Sounds like a nice car as it is.

[Carousel72TRed]

[QUOTE=tulipsoftball;6389710]I recently acquired a 1970 GTO convertible (which has not yet been delivered) and wish to add Ram Air III. Or it could be RAIV if that made more sense. It has a rebuilt 400 engine and is extremely stock. First I was told that I needed to make the hood scoops functional, and then I was told that I also needed to replace the heads, rear end, carburetor, manifold, headers, radiator, etc. Has anyone done this and can provide suggestions, resources, and costs? BTW, I reside in Denver, which could also be a factor. Yes, I am a newcomer to the forum, and I appreciate the direction.
[url=https://dinosaur-game.io]dinosaur gameQUOTE]
If your car is a numbers matching car I would leave it as is. Finding an original 70 Ram Air hood and all the accessories if you can find one is going to cost you big $. You can go to Wallace Racing on line to look up engine block and head casting numbers. PY on line forum also has a for sale section.
Carousel72TRed

[Big Bear]

I am having one other problem when I put the air cleaner on and drive the car. I have a Holley 750 carb on the car and the idle goes up. I don't know if it is because the bottom of the pan is hitting or interfering with the throttle linkage (can't tell with air cleaner on). I only put the Ram Air Cleaner on for show at car shows and then drive home with it on. I normally have a 17" Summit Air Cleaner on the car.
I think the 70 RA base had a bump for Holley clearance where as the 69 didnt. Might be causing some linkage interference.

[GregoryHurst]

The idle increase is likely due to the Ram Air cleaner base interfering with the throttle linkage, possibly because the 1969 base lacks the clearance bump present in the 1970 design. Test for interference by placing the base on without the lid and operating the throttle. If interference is confirmed, consider modifying the base or using a spacer for clearance. scary teacher 3D