Del70

Does anyone know the proper factory vacuum line routings for a 1970 Cutlass 350 4 barrel, automatic with AC (Pics, factory illustrations..) thanks in advance

Bluevista

The same vacuum line routing questions seems to be asked every day here?
Do any of you guys buy manuals or do you just depend on us guys that do?

rocketraider

Vista, lot of these guys probably aren't even aware the manuals exist.

Then there's guys like me who are obsessed with having them!

Right now I'm on the lookout for a nice 55 and 56, and anything 49-earlier. The older shop books are not that easy to find, and I sometimes hesitate on getting one, thinking I should leave it for someone who actually owns one of the cars.

Bill Sandy had a neat writeup about service literature in JWO this month.

BlackGold

Del, for those hoses installed at the engine assembly plant, you need the 1970 Engine Assembly Manual I sell (I know you're already considering this). For hoses installed at final assembly, you need the assembly manual everyone else sells.

wolfman98

I wonder who has more manuals rocketraider or wmachine

Del70

Thanks, I have the final assembly manual and I am aware of them, as well as service books.. I now have a 71 Service manual , which has helping to confirm my routings are correct, which is all I wanted to do….

Bunser

Yes.

BlackGold

Well, seeing as how the '71 engines used a combined TVS/TCS unit, while 1970 engines used separate units, the vacuum hose routing wil not be the same.

Which brings up the question of what is "proper" routing? If you have all the proper doodads the factory installed, and if they all work properly, and if you want them to continue to work the way Olds intended (which isn't necessarily the best way), then you can plumb it just like the factory did. If any one of those is not true, then the "proper" plumbing will be different.