Belt diagram for chevy 305 - 1986 Chevrolet Camaro

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)

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In the link below. More on the images tab of the second link and also parts in the main tab..

https://www.chicagomusclecarparts.com/collections/82-88-chevy-v8-ac-compressor-brackets

https://www.google.com/search?q=1990+chevy+G20+305+air+conditioning+compressor+and+alternator+brackets

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Firing order for a 305 is 1-8-4-3-6-5-7-2. The distributor turns counter clockwise and #1 should be the 5 o'clock position looking down at the top of the distributor.

go to (AA1CAR.COM )fast and eazy free down loads

the parts store or the chevy dealer with a service center can print one out for you

depends on the vehicle the motor is in. Check top of vehicle under the hood, should be a diagram of the belt(s) needing and the proper routing.
OR

Here is a whole forum showing you and explaining to you how to do it

http://www.hotrodders.com/forum/chevy-305-drive-belt-diagram-routing-148446.html

http://www.automotix.net/autorepair/diy/1992-chevrolet-g20_van-procedure_sb.html

http://www.doocu.com/pdf/read/23494 go there and find your make , model , year , and scroll to the bottom,, they have them all

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

Hope this is what you needed.