C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

1970 Vacuum Actuator Relay Replacement

Thread Tools
 
Search this Thread
 
Old Feb 17, 2019 | 11:09 AM
  #1  
pwsusi's Avatar
pwsusi
Thread Starter
Burning Brakes
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Aug 2006
Posts: 793
Likes: 11
From: Grafton MA
Default 1970 Vacuum Actuator Relay Replacement

What's the best way to remove a headlight vacuum actuator relay on a 1970? I tried getting at it from the top with the hood open, but it's proving to be like a game of twister with me bent over the nose feeling around for the bolts. Even if i do get it out this way i suspect i'm going to have a hard time getting all the vacuum lines hooked up and the re-mounting it like this. It looks like if i remove the front license plate and bracket, and then the center grill it that might work. Any advice?
Reply
Old Feb 17, 2019 | 11:41 AM
  #2  
Dave J's Avatar
Dave J
Drifting
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2006
Posts: 1,259
Likes: 154
From: Deplorableville Nebraska
Default

It looks like if i remove the front license plate and bracket, and then the center grill it that might work.
You're on the right track. The relays are held in place by two screws that connect to a bracket bolted to the support. Without the center grill it is very easy. If you are replacing, make sure you test them before installation.

To re-connect the vacuum lines;
lowest port - front of actuator
middle port - vacuum source
top port - rear of actuator
Reply
Old Feb 17, 2019 | 03:25 PM
  #3  
Iceaxe's Avatar
Iceaxe
Safety Car
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2013
Posts: 4,355
Likes: 2,633
From: Draper Utah
Default

Originally Posted by Dave J
If you are replacing, make sure you test them before installation.
^^^Pro Tip^^^
Reply

Get notified of new replies

To 1970 Vacuum Actuator Relay Replacement





All times are GMT -4. The time now is 11:02 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE