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Help! 77 cruise control WORKS....

77coolvett

Active member
Joined
Oct 9, 2019
Messages
39
Location
Minneapolis mn
Corvette
1977 corvette white
Can anyone help? I am looking for a cruise servo for a 77. (One year only). Or has anyone found a way to modify a different year servo to the 77?
 

bill81vette

Moderator
Joined
Jan 17, 2004
Messages
4,345
Location
Troy,NY
Corvette
1981 dark blue metallic
heve you checked any of the corvette parts suppliers???
 

77coolvett

Active member
Joined
Oct 9, 2019
Messages
39
Location
Minneapolis mn
Corvette
1977 corvette white
Yes, its not reproduced by anyone because it is a one year only thing. I have called every corvette junk yard in the US and Canada that I could find, even the one times one was located it was junk and the rubber was torn or missing, clearly wont hold vacuum, I have been after this for two years as well as a GOOD cruise cable, (servo to carb).
 

bill81vette

Moderator
Joined
Jan 17, 2004
Messages
4,345
Location
Troy,NY
Corvette
1981 dark blue metallic
any possibility you can rebuild it??? It may be your only option...
 

SS327

Member
Joined
May 16, 2022
Messages
23
Location
Indiana
Corvette
75 Stingray
Have you looked at camaros and impalas for something that will work?
 

77coolvett

Active member
Joined
Oct 9, 2019
Messages
39
Location
Minneapolis mn
Corvette
1977 corvette white
Have you looked at camaros and impalas for something that will work?
Yes I have, this is a corvette one year only part. All the other gm line up uses a different style that mounts to the back of the carb.
 

SS327

Member
Joined
May 16, 2022
Messages
23
Location
Indiana
Corvette
75 Stingray
Yes I have, this is a corvette one year only part. All the other gm line up uses a different style that mounts to the back of the carb.
Unfortunately you may have to “update” to that style. I had worked for Buick back then and I could have sworn that style was used on something else. Maybe even vans? But I guess I was wrong. Sorry.
 

77coolvett

Active member
Joined
Oct 9, 2019
Messages
39
Location
Minneapolis mn
Corvette
1977 corvette white
Unfortunately you may have to “update” to that style. I had worked for Buick back then and I could have sworn that style was used on something else. Maybe even vans? But I guess I was wrong. Sorry.
I appreciate any and all ideas. I have been researching this for 2 years now. I can fabricate something but I'm trying to keep it original if possible.
 

77coolvett

Active member
Joined
Oct 9, 2019
Messages
39
Location
Minneapolis mn
Corvette
1977 corvette white
After many hours of searching, found my cable and servo. Installed, adjusted and took the transducer completely apart cleaned and lubed reassembled and walllla it works great, holds the exact speed I set it at. Finally the last piece of the puzzle. Found a Nos servo so hopefully many years of working trouble free. Well we'll see. But it works for now....
 

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