If full vacuum can I just put a tee in the distributor vacuum advance line? The little capped off one is sometimes used for vac accessorizes like vac cruze control or with some cars vac headlights etc. No pcv and two breathers makes for a crankcase pressure problem and possible oil leaks. You need air into the motor to mix with the fumes and drawn out by the pcv. Is it OK to put a T on the back so the shift modulator and PCV share the big back port? 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. 79 C10 LS swap - What do I do to the vacuum line to the trans? I found an extended set screw and drilled it for a vacuum fitting. Does it have s threaded port in the rear where you can add a vaccum port? Stockish motors run on either one. 79 C10 LS swap - What do I do to the vacuum line to the trans. TH350 Vacuum Modulator Line. I was wondering if the line that was used on the 1964 cars would be the same as the 1965 Limo. I know this is a little different than your set up, just giving you an idea. 06-23-2016, 02:45 PM||# 17|.
I have it capped off at the carb end for now. I have an Edelbrock performer RPM and it does have the large vacuum port on the back and that's where my transmission line used to go but the Holley carb is in the way of that now. It's whay there is a hard line running down there from the factory. The big port on the back is being used by my th400 shift module, and I have the vacuum advance in the distributor hooked up to the small port under the throttle blades in front of the carb. 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. Where can the TH350 vacuum modulator line hook up to on the engine? Vacuum modulator transmission vacuum line to carb recipes. Location: calgary alberta. 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. Also what size is the line from the vacuum modulator? Look at the documentation that came with your carb. Are you running an air cleaner spacer?
"I ain't nobody, dork. If you run manifold vacuum to the advance, it will work, but part throttle driveability and fuel mileage suffers a little. I do have my back and advance hooked up to manifold vacuum under the throttle blades, so Is it OK to have the PCV and the transmission modulator both running to a T off the back of the 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. 72 Cheyenne Super (Purchased new by my parents in August of 71) Black and White. Vacuum modulator transmission vacuum line to carb adjustment. So I just got a new Holley 650 double pumper and it's almost 100% installed.
'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The transmission modulator vacuum line was cut and replaced with a rubber line from the carburetor to the modulator. The one on the back of the intake goes to the brake booster the one big one on the carb goes to the trans the one little one the right of the carb goes to the dizzy the other little one is usually capped off. I ground out a bit of the top of it to clear my Holley 3310 before I put a spacer underneath it. Posts: 1, 248. the one on the valve cover should go into the air cleaner port. Vacuum modulator transmission vacuum line to carb counter. You guys got it all backwards!
There are a few good explanations available on the internet. Location: Whidbey Island, Washington. Description: Turbo 350. Like geezer said, if the engine has a healthy cam, it will want manifold vacuum. Run which ever one your motor likes. That line is how the transmission knows how much load is on the engine, and how it decides when and how to shift.
If it can go to the carb does it need to be on full vacuum or timed vacuum? Is it even supposed to be down there? Can it hook to the carb or doe it have to go to intake manifold? I have a wanted ad on the site looking for the tee that goes into the back of the carburetor. Location: Colfax California. Location: Davisburg, Michigan. Elderbrock 8096 it's available from summit, kegs, Amazon etc. Deluxe Side Markers.
Description: 350 V8. Quote: For the vacuum advance line, you want to grab ported vacuum. 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. Join Date: Apr 2014. I have a 2 speed dynaflow. Thanks for any help. I need to find a replacement line for this restoration project. Can I just do it this way with a T hooked up to the big port on the back of the carb? Owner installed options: Front Sway Bar. Browse Transmission Vacuum Lines Products. Without vacuum the transmission will think your foot is 100% on the floor 100% of the time. 73 "The Needy Beast". Location: Fort Wayne, Indiana, USA.
Location: Hyattsville, Maryland. Join Date: Sep 2007. I also used the stock manifold port for my modulator line. 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.
The other valve cover will have the pcv valve, which should be hooked to the big port on the back of the carb. If so, it has a large hose nipple that will run to one of your valve covers. Last edited by 72 Super; 06-21-2016 at 08:33 PM. What happens to this now with the LS in?
What type of intake are you running?