Low vacuum engine won't shift th350 transmission page1 - discuss chevy high performance, drivetrain, and chevrolet tech topics in the chevy high performance forums at super chevy magazine hook up the hand vacuum pump pump the tool the hose, tube, hose and modulator should hold perfect vacuum. Is that familiar with automatic transmission hook up vacuum modulator ever leaks how to test light duty with a th-350 transmission to the vacuum actuated can allow the carburetor to a leak connect at the why won't the vacuum line to a gm turbo th350 automatic transmission designed by general motors holley carburetor. 350 turbo transmission vacuum line hook up he wasn't always that all turbonetics turbocharger set up depending on where the greatest interactive turbo hook up, set up the summer than i'll need to carefully set up a garrett gt2871r turbocharger works is an appointment with the 1g t-stat housing 2. Best answer: assuming that you mean the vacuum for the trans there will be a hard line between the engine and the transmission it runs down the back of the engine and along the transmission's bellhousing and the case (the c6 just happens to have an integral bell and case, the c4 for example doesn't. I was wondering if some had a picture of where to hook up the the vacuum modulator to the manifold i replaced the transmission in my 89 suburban with an th 400 and need to hook up the vacuum modulator but not sure where is the best place to hook it up at a picture would be nice.
Is the vacuum modulater good on the side of the trany it's got the vacuum line that runs in to it, you may want to replace it if it's been sitting a long time they are pretty cheap make sure the vacuum line ain't broke or cracked or even pulled off that can mess up the shifting too. Vacuum advance for 1970 was connected thru a solenoid and shut off until top gear using the transmission switch to allow or deny vacuum to the advance in the factory setup. To shift properly, the automatic transmission has to know how hard the engine is working there are two different ways that this is done some cars have a simple cable linkage connected to a throttle valve in the transmission the further the gas pedal is pressed, the more pressure is put on the. Transmission lines corbin i have a completely stock 73 with a 302 and auto trans my trans has 2 steel lines coming from the transmisson, directly in the middle of the engine, that change into rubber hoses that both hook up to the 4 port vacuum module on the fire wall i am sure we are talking about the same hoses tony.
The vaccum hose goes to the back of the tranny on the passenger side, you will see a round modulator valve and the hose pushes onto the valve and the other end goes to a vaccum source on your intake manifold. Th350 vacuum hose what to use discussion in 'the garage' started by khotmer, oct 28, 2003 i know most vacuum hoses do not use clamps but i thought i would ask khotmer, oct 28, (that you hook it up to), and then ported vacuum which is above the throttle blades you must open the throttle blades to get ported vacuum. Footage taken from holley carburetor installation & tuning dvd. Holley offers tips on properly setting up the transmission kickdown levers on gm turbo hydro 350 and 400 automatic transmissions the video also demonstrates.
Internal pressure passages on the 700r4 prevent the torque converter from locking up in first gear i installed a toggle switch in mine in addition to the vacuum switch just so i can lock the converter up if i want to cruise in 3rd for a while without the slippage of the converter causing unnessary heat to build up. Print below is a listing of vacuum diagrams for most of the engine and emissions package combinations covered by this guide because vacuum circuits will vary based on various engine and vehicle options, always refer first to the vehicle emission control information label, if present. In the case of the transmission system, the all-important mustang transmission vacuum line transports vacuum to the necessary ports, which allows your car to seamlessly shift gears when needed along with the vacuum line, it is also important to be cognizant of your mustang vacuum modulator from the factory.
Transmission vacuum line help i just got the car and found out that the transmission vacuum line is been hacked i'm not sure how or where it goes other than it connects to the transmission and somewhere on the four barrel carburetor. One (1) vacuum switch one (1) fourth gear pressure switch - 2 terminal, no two (2) splice connectors one (1) #4 machine screw step 1 drain transmission oil pan you will need a pan to catch fluid remove transmission oil pan bolts when removing bolts, remove so pan will not drop completely off. Where does the vacuum line on the back of the 350 tranny hook up to on a q-jet carb some one let me know please as well as the the line from the distributordoes it go on the lower left corner. Find automatic transmission vacuum lines with powerglide transmission type and get free shipping on orders over $99 at summit racing. Transmission fluid is a transparent red oil that looks something like cherry cough syrup if the fluid is cloudy or muddy, or it has a burned odor, you should have it checked by your technician who will most likely advise you to have a transmission drain and refill or transmission tune-up.
The transmission vacuum modulator valve determines how much load is on the engine so the transmission can shift properly it has a vacuum line that connects to the intake and measures the amount of vacuum in the engine. I need to know for sure where the vacuum line for my c-4 tranny is supposed to be hooked up ever since day 1 i've had it hooked up to the carburetor. During c4, c6, or fmx installation, fill the torque converter with a minimum of one quart of transmission fluid to both prime the pump and ensure lubrication on start-up. There should be a steel line coming up from under the truck, near the center of the firewall the under truck end fits onto the modulator valve on the passenger rear side of the trans with a piece of rubber vacuum line.
Automatic transmission vacuum lines replace your rusted or worn automatic transmission vacuum lines with something better our selection of steel and stainless steel lines from classic tube and right stuff detailing are made to last—even in the harshest environments. Without vacuum to the tranny, it will shift late, thinking it is full throttle if it doesn't shift by eg 5000 rpm, that sounds like trouble :-(i think that b&m and others make a vacuum modulator for the transmission to accomodate a hot-cam engine which produces much less vacuum. Hook up: there are two things that control the transmission, vacuum and the kick down cable a vacuum line runs from the manifold to the governor on the back of the transmission there was a small line on my engine that appeared to be used for this purpose, so i hooked up the vacuum to this line.
The vacuum line you have going to the transmission goes to the distributor and the one you have going to the distributor needs to go to the transmission the other two are hooked up correctly thanks, that is what i was thinking. After replacing the vacuum switch, the vacuum lines will need to be cleared of transmission fluid the best way to do this is to open up the hood, disconnect the.