Intake vac connection ?
Thread Starter
Tech Contributor
Joined: Aug 1999
Posts: 15,160
Likes: 3,965
From: Connecticut, USA
Intake vac connection ?
Hi, I'm running an Edelbrock RPM intake which only has (1) 3/8 npt vac port. I need 1 for the lights and 1 for the PB. The PB hose is twice the size of the light hose. I didn't get to NAPA to see what fittings they have in stock. What fitting(s) did you run for both? I'm thinking of running a large ID fitting and "T"ing off that for the lights.
Thanks,
Gary
Thanks,
Gary
Le Mans Master
Joined: Feb 1999
Posts: 8,351
Likes: 75
From: Tampa Bay FL
Re: Intake vac connection ? (gtr1999)
My power brakes attach to a 9/16" fitting in the base of my Q-Jet. The headlights/accessories vacuum line connects to a 1-way OR 2-way NPT fitting in one of the rear intake runners. I don't think the two should share the same vacuum connection.
Thread Starter
Tech Contributor
Joined: Aug 1999
Posts: 15,160
Likes: 3,965
From: Connecticut, USA
Re: Intake vac connection ? (TedH)
Ok, the original Q-jet also had the rear vac tap for the PB but the Q-jet I'm running doesn't have that provision. The Q-jet I'm running is from a 69. The only vac tap I have is in the runner. There must be several guys out there who have a setup like this?Maybe a picture is worth a 1000 words..or something like that :crazy:
Thanks,
Gary
Thanks,
Gary
Race Director
Joined: Mar 2001
Posts: 11,322
Likes: 1
From: Living in the Hartland
Re: Intake vac connection ? (gtr1999)
Check the vac fittings section in ZIP seems they have fittings for the intake port that have the correct number of fittings. I think as long as you have the 1 into 2 connection that is 1 way for the lights and interior acc you should be fine.
Race Director
Joined: Mar 2001
Posts: 11,322
Likes: 1
From: Living in the Hartland
Re: Intake vac connection ? (Fevre)
Thread Starter
Tech Contributor
Joined: Aug 1999
Posts: 15,160
Likes: 3,965
From: Connecticut, USA
Re: Intake vac connection ? (Fevre)
Thanks Chris that looks to be what I'm looking for. Do you see any problem running the PB and ligths off the same runner for supply?
Gary
Gary
Race Director
Joined: Mar 2001
Posts: 11,322
Likes: 1
From: Living in the Hartland
Re: Intake vac connection ? (gtr1999)
I am not certain if the pb booster has a build in check valve or not but I would think as long as you had a check valve in line you should be fine. If you think about it all the vac acc are getting vac from the same source whether or not they are hooked up to the same port.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
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
