1969 J-3800 Dauntless V8 intake manifold connections

[Philip Parker]

Hello all -

I am about to install the fully rebuilt Buick 350 back in this truck and I will be switching it back over to the original intake manifold. The PO had put a 4bbl intake on and stubbed off a few connections. I am scratching my head over where all the vacuum lines and plumbing goes on this thing. If anyone has a good resource or photos of their stock Buick motor to share that would be greatly appreciated. Thanks!

[tgreese]

I don't know specifically about the 350 in Jeeps, but the plumbing for these older engines is quite simple and they all share the same devices, more or less - vacuum advance, PCV, etc. The factory shop manual is available on CD-ROM at RockAuto for about $25. Unlikely they will show a vacuum diagram for this year - because the vacuum system is so simple - but it will probably show all the systems you are interested in, and you can glean what info you need from reading the manual.

https://www.rockauto.com/en/moreinfo.ph ... 92&jsn=375

If you picked a Buick 350 from a later model car, most of the emissions plumbing for that engine will be missing in 1969. Again, you mostly need vacuum advance to the distributor, and PCV ... not much else. If you have a question about some part on the engine, post a pic and someone will reply.

[tgreese]

SQL error and double post.

[Kaiserman]

I can get you pics of my 68 J3800. It's all stock except for temp senders for a live oil pressure and water temp gauges. Oh, and I'm running manifold vacuum, but I know where it' supposed to pick up ported vacuum from.