Intake Vacuum Modulator - Help?
Thread Starter
Instructor
Joined: Dec 2006
Posts: 207
Likes: 0
From: Keller TX
Intake Vacuum Modulator - Help?
I broke my Intake Vacuum Modulator...anyone have an extra or know where I can get one just like it?
The catalogs show a different picture for my 77, 350 Auto....I need one with a port on top and on the side.
Any suggestions?
The catalogs show a different picture for my 77, 350 Auto....I need one with a port on top and on the side.
Any suggestions?
Thread Starter
Instructor
Joined: Dec 2006
Posts: 207
Likes: 0
From: Keller TX
This module threads into the back of the intake. It is not part of the water passage. The top of the module goes to the trans and I think allows shifting. The other port on the module goes to another vacuum line.
The catalogs do not show the module as a 77. I need one that has the top tube so I don't have to rebend my tube going to the trans.
Thanks if anyone can help me locate one like this.
Doug
The catalogs do not show the module as a 77. I need one that has the top tube so I don't have to rebend my tube going to the trans.
Thanks if anyone can help me locate one like this.
Doug
Le Mans Master
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
Hey Dale
Thats just a T fitting. You should be able to get them at most any auto parts place. Its just a connection point for manifold vacuum for the VAc modulator on the tranny (thats where the steel Line goes) and other vac accesories.
Here is one from Ecklers
http://www.ecklers.com/product.asp?p...7&dept_id=1268
Thats just a T fitting. You should be able to get them at most any auto parts place. Its just a connection point for manifold vacuum for the VAc modulator on the tranny (thats where the steel Line goes) and other vac accesories.
Here is one from Ecklers
http://www.ecklers.com/product.asp?p...7&dept_id=1268
Last edited by SIXFOOTER; Jul 9, 2007 at 09:42 PM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
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
Melting Slicks
Joined: Dec 2005
Posts: 2,441
Likes: 0
If it's an emissions device that only operates (allows or prevents vacuum) when the engine reaches a certain temp it could very well thread into the water jacket, it then would in fact be a type of modulating device. In this case it's just a vacuum fitting providing multiple ports, good question though.
Last edited by shafrs3; Jul 10, 2007 at 09:55 AM.
Thread Starter
Instructor
Joined: Dec 2006
Posts: 207
Likes: 0
From: Keller TX
Hey Dale
Thats just a T fitting. You should be able to get them at most any auto parts place. Its just a connection point for manifold vacuum for the VAc modulator on the tranny (thats where the steel Line goes) and other vac accesories.
Here is one from Ecklers
http://www.ecklers.com/product.asp?p...7&dept_id=1268
Thats just a T fitting. You should be able to get them at most any auto parts place. Its just a connection point for manifold vacuum for the VAc modulator on the tranny (thats where the steel Line goes) and other vac accesories.
Here is one from Ecklers
http://www.ecklers.com/product.asp?p...7&dept_id=1268
Thanks for the reply and link. I was hoping to find one that is exactly like the one I have (except not broken)....mine has a port on top and one on the side. I'll see about another replacement but I was hoping not to have to rebend my tube that goes to the trans.
Thanks for the help.
Doug
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Le Mans Master
Joined: Jan 2003
Posts: 6,575
Likes: 1
From: Tuttle OK
Cruise-In VIII Veteran
however, i think it's kinda hard to find that "exact" round headed little piece. it's just a "T" but has it's own shape.
disclaimer; not my piece on e-bay....honest..
Thread Starter
Instructor
Joined: Dec 2006
Posts: 207
Likes: 0
From: Keller TX
20 bucks is a lot for a small part....reminds me of Harley parts.
Doug
