You guys got it all backwards! I ground out a bit of the top of it to clear my Holley 3310 before I put a spacer underneath it. If you have this particular line, and would like to sell it, please let me know. Where can the TH350 vacuum modulator line hook up to on the engine? Location: Fort Wayne, Indiana, USA. I'm hooking up all the vacuum lines and noticed I don't have a spot to plug the vacuum line that comes out of the valve cover into my carb. It's my first Holley so correct me if I'm wrong on the vacuum advance being plugged in UNDER the throttle blades on the front of the carb too please.
Location: Winona Lake, IN. Last edited by 72 Super; 06-21-2016 at 08:33 PM. Does it have s threaded port in the rear where you can add a vaccum port? Description: Turbo 350. Posts: 1, 248. the one on the valve cover should go into the air cleaner port. Description: Turbo 350 modulator line. Description: Powerglide. Either a manifold port on the carb or hooked to a vacuum tree on the intake. If it can go to the carb does it need to be on full vacuum or timed vacuum? You need air into the motor to mix with the fumes and drawn out by the pcv. Guest Riviera1963 Posted July 22, 2013 Share Posted July 22, 2013 So there was a vacuum line off the carburetor that lead down back behind the firewall, unfortunately when I went to go take it wasn't connected to anything down below. The transmission modulator vacuum line was cut and replaced with a rubber line from the carburetor to the modulator. 73 "The Needy Beast". 79 C10 LS swap - What do I do to the vacuum line to the trans?
The little capped off one is sometimes used for vac accessorizes like vac cruze control or with some cars vac headlights etc. Join Date: Nov 2015. Secondly, most "experts" suggest using manifold vacuum (under the blades) for distributor advance rather than "ported" vacuum. Join Date: Sep 2007. Shafer's Classic Reproductions - Transmission Vacuum Lines. The other valve cover has a breather on it. Re: Where to hook up vac lines on new carb. Location: Whidbey Island, Washington. Run which ever one your motor likes. Location: Hyattsville, Maryland.
Browse Transmission Vacuum Lines Products. It's the same size as the transmission shift modulator so I can't use one of the small ports. That line is how the transmission knows how much load is on the engine, and how it decides when and how to shift. What happens to this now with the LS in? Deluxe Side Markers.
My guess is that is would be a vacuum modulator for the transmission, but I cannot find any place where it would go on the transmission. 'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. I need to find a replacement line for this restoration project. The manifold vac port and the ported port are for your vac advance. It should show you where to hook up the valve-cover/pcv hose. Can I just do it this way with a T hooked up to the big port on the back of the carb? The transmission modulator should be hooked to the intake manifold port behind the carb (use the low profile fitting mentioned above), or it can be hooked to the small port below the throttle blades, but that will only leave you with ported vacuum for your vacuum advance. Is it even supposed to be down there? 06-23-2016, 02:45 PM||# 17|. No pcv and two breathers makes for a crankcase pressure problem and possible oil leaks. I am not sure about the port under the throttle blade, I know that on the Holley there should be a 10-32 set screw above the air bleed screw on the primary metering block. I have my PVC going to the port at te rear of the carb, my PB hose is going to the port on the carb spacer and my turbo 350 modulator vaccum is hooked to small port on passenger side of the carb. The big port on the carb is for the pcv from one valve cover. Vac modulator wants manifold vac.
Quote: For the vacuum advance line, you want to grab ported vacuum. I found that OPGI (), however, this fits from 1962 to 1964 Hydromatic transmissions, and this car has the TH400 transmission. There are a few good explanations available on the internet. Location: Davisburg, Michigan. Also what size is the line from the vacuum modulator?
Elderbrock 8096 it's available from summit, kegs, Amazon etc. Link to comment Share on other sites More sharing options... If OTOH you are keeping the Turbo 350 or 400 that you have, you need to hook it up and supply it with manifold vacuum. TH350 Vacuum Modulator Line. I found an extended set screw and drilled it for a vacuum fitting. Can it hook to the carb or doe it have to go to intake manifold? "I ain't nobody, dork. If full vacuum can I just put a tee in the distributor vacuum advance line?
You can search it to see a picture and infomation on it. Location: calgary alberta. Stockish motors run on either one. Location: Colfax California.
Either a stand alone one or hooked to the air cleaner. I ve read where if the line isn t connected that it wears on the transmission. If so, it has a large hose nipple that will run to one of your valve covers. I also used the stock manifold port for my modulator line. Are you running an air cleaner spacer? The Rebuild of Creeping Death after the wreck. I have a wanted ad on the site looking for the tee that goes into the back of the carburetor. 72 Cheyenne Super (Purchased new by my parents in August of 71) Black and White.
So I used an 1inch spacer user my carb wth a vacuum port. Usually a big cam motor needs manifold vac. It's whay there is a hard line running down there from the factory. I know this is a little different than your set up, just giving you an idea. I was wondering if the line that was used on the 1964 cars would be the same as the 1965 Limo.
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