I have a 1984 delta 88. It had a blown intake gasket and in removing the intake the vacuum lines were brittle and broken. Back together the lines are crossed and need a diagram to shoe the correct design

Lots of older cars, especially ones without air conditioning, didn't use vacuum controls, but used cables and levers.
If you do have vacuum lines, will have one from engine's intake manifold going through the firewall and into the back of the control panel to a pod-like device that distributes vacuum to several controllers on the heater/AC case under the dash. Several vacuum lines exit the control panel, each goes to a small diaphragm tank or canister next to the door it operates.

You get under the car & measure what you need

Better to remove all the rusted lines,then measure them

Get 3/16" brake tubing at auto parts store

Only comes in various lenghts, of straight tubing

Has to be cut,bent,double flared & you may need
fittings.

There is no prints or diagrams for brake lines

can i put an auto start in a 1984 olds delta 88

you have to take the radiator cover,radiator and lines, and the water pump off to get to the timing set. its a 3 piece set that comes with gaskets for it and the water pump. once u replace it, u should have a mechanic set the timing with a timing light.

I need a vacuum hose diagram for a 1984 oldsmobile delta 88 5.0

It sounds to me like there is still a pretty good vacuum leak somewhere, and you should also check for any dis-connected or missing vacuum lines on the intake manifold, at the carburetor, and the large vacuum hose to the brake booster unit and the vacuum valve at the brake booster unit for any vacuum leaks or broken vacuum lines/hoses, and they can be hard to find because cracks in the vacuum hoses like to hide on the under-side of the vacuum lines/hoses especially the hard plastic ones. Also the carburetor could be loose or the carburetor base gasket could be damaged, the EGR valve gasket could be damaged, or the intake manifold gasket could be damaged, and these are all the most likely places to suspect a major vacuum leak.

remove bolts from egr, Disconnect electric connector. Takes about five mins, Very easy

depending on what year it is it could be under the car or right in front of the carb as a in line fuel fillter. I have a 84 olds delta 88.

look at the intake,where the air flows in. you will see a bunch of lines folow them. if the problem is there you should be able to spot it.

Check for vacume leaks. Hoses and around intake gaskets.spray some carb cleaner around intake gaskets.