Throttle Vacuum-'81
Race Director
Joined: Mar 2017
Posts: 11,949
Likes: 4,507
From: Virginia
Yes. Sports cars have manual transmissions, with clutch pedals. Not something you have to do immediately, but It is another vacuum hose that is absent from all of my cars.
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Joined: Sep 2023
Posts: 61
Likes: 5
From: Howard County
Air Filter Question
I am thinking of installing an open air filter and taking off the duel snorkel and assembly on my 81. I have the original valve covers. If I do that do I need to do anything with crank case vent tube of the passenger side valve cover? Much appreciated for advice.
Race Director
Joined: Mar 2017
Posts: 11,949
Likes: 4,507
From: Virginia
You can use a breather instead of that vent tube. That means a tiny amount of oil mist may end up in the engine compartment, and you are trusting the breather to filter any air going into the crankcase. That might be a problem if you live in the desert.
I did the opposite of what you propose, and kept the dual snorkel, but use a breather so I can remove the air cleaner assembly quickly.
If you aren't pushing over 400 HP, the stock dual snorkel air cleaner assembly does a really good job. I'd read up on it before you get rid of it.
Here's an old thread. I've since generated enough data to convince me to leave the dual snorkel in both cars (until the LS conversion, at least, then they'll get a different CAI).
https://www.corvetteforum.com/forums...-filament.html
I did the opposite of what you propose, and kept the dual snorkel, but use a breather so I can remove the air cleaner assembly quickly.
If you aren't pushing over 400 HP, the stock dual snorkel air cleaner assembly does a really good job. I'd read up on it before you get rid of it.
Here's an old thread. I've since generated enough data to convince me to leave the dual snorkel in both cars (until the LS conversion, at least, then they'll get a different CAI).
https://www.corvetteforum.com/forums...-filament.html
