Conversions & Swaps LSX Engines in Non-LSX Vehicles
Sponsored by:
Sponsored by:

5.3 Vacuum port required

Thread Tools
 
Search this Thread
 
Old Apr 24, 2008 | 01:03 AM
  #1  
Chizel's Avatar
Thread Starter
Teching In
 
Joined: Jan 2008
Posts: 22
Likes: 0
From: Regina
Default 5.3 Vacuum port required

Well, I know I have seen it posted here before, but now when I need it I sure can't find it. What I am after, is a Vacuum port to put into the back of the intake on my 5.3. I assume that it must be where the stock vac line would run to the brake booster, as all I have in there right now is a hole. Does anyone have the GM part number for a plug to go in there to run a vac line off? Let me know if you do, thanks!
Reply
Old Apr 24, 2008 | 04:31 AM
  #2  
91parkave's Avatar
Moderator
15 Year Member
iTrader: (4)
 
Joined: Feb 2008
Posts: 2,079
Likes: 9
From: Arizona
Default

you can use a brass fitting and and screw it into the plastic with JB weld on the threads
Reply
Old Nov 23, 2014 | 09:20 PM
  #3  
Mercier's Avatar
TECH Addict
iTrader: (15)
 
Joined: Jun 2014
Posts: 2,384
Likes: 5
From: Baton Rouge, LA
Default

Here is the real answer..this kept popping up when I was searching for the answer to this so here is that answer to close the thread:

ACDelco 12559760
"GM Original Equipment Power Brake Booster Vacuum Hose Connector"

$7.50 with free shipping on Amazon.com. Also not too expensive at the dealership..maybe ~$12 if I recall correctly.
Reply
Old Nov 24, 2014 | 01:18 AM
  #4  
Mercier's Avatar
TECH Addict
iTrader: (15)
 
Joined: Jun 2014
Posts: 2,384
Likes: 5
From: Baton Rouge, LA
Default

Novak also has a really nice metal version that makes this a 3/8 inch vac hose connection. $20 but it plugs right in. I am ordering one of these as well.

http://www.novak-adapt.com/catalog/e...gine_parts.htm

Last edited by Mercier; Nov 24, 2014 at 08:26 AM.
Reply
Old Nov 25, 2014 | 10:55 PM
  #5  
76larkman's Avatar
TECH Enthusiast
 
Joined: Sep 2014
Posts: 732
Likes: 1
From: alburnett, iowa
Smile

I found mine was broke gone or whatever so I got a brass bushing screwed it in then screwed in a barbed fitting put power brake hose on that. No problem.
Reply
Old Nov 26, 2014 | 03:07 PM
  #6  
Mercier's Avatar
TECH Addict
iTrader: (15)
 
Joined: Jun 2014
Posts: 2,384
Likes: 5
From: Baton Rouge, LA
Default

That's a way to go also. I hope you don't break it off again because this time it wont break the brass but the intake itself. The nylon it's made of is pretty strong though.

I like the fact that it's a quick-connect kinda fitting so when I go to hydroboost I can just pull the nipple out and pop the factory plug back in with about 5 seconds of effort. Also, FYI to all, it is the same fitting on the 2000-ish intake I had on my LM7 and the 2010-ish intake that I put it into. Could have just swapped it over. Doh.
Reply




All times are GMT -5. The time now is 10:16 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE