1970 Vacuum question
Thread Starter
Burning Brakes
Joined: Oct 2010
Posts: 1,160
Likes: 23
From: Prescott AZ
1970 Vacuum question
Getting ready to remove the vacuum set up for my head lights and windshield wiper door due to low vacuum from the motor. Just curious, is there anything else the vacuum operates on the 1970? I believe that on my wife's 1982 it also operates some of the heater/air condoner controls. If not, then I can remove all the vacuum and not have to trace anything out. Thanks for any help.
Team Owner
Joined: Jan 2007
Posts: 53,648
Likes: 878
From: Southern Cal Ca
St. Jude Donor '22
Getting ready to remove the vacuum set up for my head lights and windshield wiper door due to low vacuum from the motor. Just curious, is there anything else the vacuum operates on the 1970? I believe that on my wife's 1982 it also operates some of the heater/air condoner controls. If not, then I can remove all the vacuum and not have to trace anything out. Thanks for any help.
Team Owner
Joined: Jan 2007
Posts: 53,648
Likes: 878
From: Southern Cal Ca
St. Jude Donor '22
Thread Starter
Burning Brakes
Joined: Oct 2010
Posts: 1,160
Likes: 23
From: Prescott AZ
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Team Owner
Joined: Sep 2006
Posts: 31,172
Likes: 4,249
From: Westminster Maryland
Hi,
On 1970 cars there is a very small rubber vacuum line that runs off a 'tee' in the large vacuum supply line for the wiper door and passes through the firewall on it's way to the heater/defroster controller. Another line continues down the transmission tunnel, across the seat bulkhead on it's way to the controller for the astro vent doors
In 71 the tee is very near the right side hood latch... not sure just where it is in 70.
How are you going to operate your lights and wipers?
Regards,
Alan
On 1970 cars there is a very small rubber vacuum line that runs off a 'tee' in the large vacuum supply line for the wiper door and passes through the firewall on it's way to the heater/defroster controller. Another line continues down the transmission tunnel, across the seat bulkhead on it's way to the controller for the astro vent doors
In 71 the tee is very near the right side hood latch... not sure just where it is in 70.
How are you going to operate your lights and wipers?
Regards,
Alan
Melting Slicks
Joined: Oct 2012
Posts: 2,156
Likes: 273
From: Dunedin NZ.
You say no air con but was it formerly an air con car? What about heater valve water control? Also vacuum operated door that directs air under the dash from heater.
Thread Starter
Burning Brakes
Joined: Oct 2010
Posts: 1,160
Likes: 23
From: Prescott AZ
No it was not a factory air car. That was my question, what all was controlled by vacuum. I guess I will leave the vacuum to the interior and see if I have enough to operate the climate control system. What are the guys doing that are using LS motors doing?
Thread Starter
Burning Brakes
Joined: Oct 2010
Posts: 1,160
Likes: 23
From: Prescott AZ
Thanks for the input guys.
So except for the climate controls, I guess I've got it covered. I will leave those in tack and see if I have enough vacuum to operate them.
Thanks again, I really appreciate it.
Thanks again, I really appreciate it.
Thread Starter
Burning Brakes
Joined: Oct 2010
Posts: 1,160
Likes: 23
From: Prescott AZ