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ls1nova71 · 11-22-2013, 02:42 PM

Are you wanting to know where to get a vacuum source to run the HVAC blend doors? If you have a truck intake, on the passenger side about the middle is a fitting that usually has a break off tab on it. break the little tab off and a hose will push on and has little pieces on top and bottom that hold the hose tightly in place. If you have a car intake, it's at the back of the intake by the brake booster fitting.

11-22-2013, 02:42 PM	#3
ls1nova71 Registered User Join Date: Dec 2009 Location: Independence Mo Posts: 4,119	Re: Vacuum line for heater blend Are you wanting to know where to get a vacuum source to run the HVAC blend doors? If you have a truck intake, on the passenger side about the middle is a fitting that usually has a break off tab on it. break the little tab off and a hose will push on and has little pieces on top and bottom that hold the hose tightly in place. If you have a car intake, it's at the back of the intake by the brake booster fitting. __________________ My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html