Grimmlock

I've got a 1970 delta 88 455 2bbl and I can not for the life of me, find a vacume diagram for it. Any help at all would be great.

joe_padavano

Factory Chassis Service Manual, page 6C-17, figure 6C-20, lower RH corner of the image.

Grimmlock

................................ if I had the manual..I wouldn't be asking people who still post in forums..

Tri-Carb

https://www.ebay.com/itm/15539804233...Bk9SR-bEvc_IYQ

joe_padavano

So you want someone else to buy a manual, scan it, and give you the info for free.

Yeah, that's a smart@$$ answer. It's also not wrong. There isn't a lot of rocket science in vacuum connections on a car this age. Distributor vacuum advance goes to the ported vacuum connection. EVERYTHING else (AT modulator, power brakes, source for HVAC control, vacuum trunk release, etc) goes to manifold vacuum. Any port in an intake runner is manifold vacuum. There is no practical difference in any of them. Your car came with Transmission Controlled Spark, which is a prehistoric emissions control system that disables vacuum advance in lower gears. That solenoid valve splices into the hose from the distributor to the carb. Most people by pass it.

cutlassefi

Getting a little saltier the older we get are we?😉. I love it!!!

joe_padavano

Geeze, Mark, how long have you known me? I've always been this way.

OLDSter Ralph

Joe P can pretty much explain in simple, short, accurate and plain terms.

Tri-Carb

This is your lucky day. With your charming attitude and command of the English language, especially spelling, I know a couple of internet forums where you would be a perfect fit.

BangScreech4-4-2

You just "called out" the most valuable resource on this forum. Go get your free advice elsewhere and don't let the doorknob hit you in the butt on your way out.

Olds64

C'mon

Please follow the forum rules.

https://classicoldsmobile.com/forums...aq_userconduct

Olds64

DOH!

BangScreech4-4-2

Yeah, sorry -- I figured it out.