I need to know where the vacuum hose from the transmission connects to on the motor, or where ever. It is a 85 Chevy c-10 silverado, 305 motor with automatic transmission.

One of these links should take you to a page containing a schematic showing the routing of the vacuum hoses. Need pictured vacuum diagram for 1983 oldsmobile 307, 5.0 - Fixya

Chevrolet Vacuum Line Diagrams / Chevrolet Blazer And Gmc Jimmy 1969 1982 Vacuum Diagrams Repair Guide Autozone : 305 v8 engine diagram best wiring library 1997 chevy 305 engine diagram vacuum line picsdiagram for 305 w qjet. (scoobydoomemes.blogspot.com)

Question edited for clarity.

Cooler lines

https://www.google.com/search?q=2005+chevy+silverado+1500+transmission+cooler+lines

Vacuum Lines

https://www.google.com/search?q=2005+chevy+silverado+1500+transmission+vacuum+lines

Videos

https://www.google.com/search?q=2005+chevy+silverado+1500+replace+transmission

images

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We do not have any diagrams, please try your local library.

There is usually only one vacuum connection on a turbo 350. It connects to the modulator valve on the side of the transmission. This valve uses engine vacuum to determine transmission shift points. The other end usually connects to a direct engine vacuum source. A "direct source" is a hose connection on the throttle body that has a vacuum signal available at idle. If it doesn't, then it's considered a "ported source".I have had some experience with the chevy blazer/gmc jimmy series, both the early large body models and the small body versions. The stalling when put into gear complaint is most likely caused by a bad intake gasket which is common on the older versions with the small block V8 motors. The newer versions with the vortek motors also had allot of trouble with throttle body gaskets. If these problems have not already been addressed, then there's a good chance that it will take care of the problem. Other possible sources of vacuum leaks are the pcv hose that is hard and brittle. Check the hose out carefully, especially the side that normally faces the engine. Check the throttle body bolts (carburetor bolts) for tightness. I hope that this information is helpful to you. Thank you for using Fixya.com.

Check out faxonautoliterature.com. They list 2 different manuals that will help. If you are just doing minor repairs and a tune up on your transmission then the Motor manual should do the trick. If you are planning on doing a complete overhaul then you need the GM service manual. It will give you everything you need to know and how to do it so you end up with a working transmission. Hope this helps.

Click over image for zoom...




Fig. 100: Chevy 305 (5.0L) V8 engine-federal with automatic transmission alternate



Fig. 101: Chevy 305 (5.0L) V8 engine-California with automatic transmission alternate

Thinking this third hose is the actual vacuum hose that goes to the T near the vacuum reservoir located in the drivers side fender just below the antilock brake assembly. There is a one way valve in the line from the transmission to the T.

try autozone.com or you can buy a hains book for around 12-14 dollars at any auto parts store.

Haynes Repair Manual

Go to autozone.com and register,and you'll be able to access their online repair manual.It contains everthing you'll need.