Where do I get Vacuum On My 307?
Where do I get Vacuum On My 307?
October 24th, 2011, 08:05 AM
#2
Administrator
Join Date: Oct 2009
Location: Poteau, Ok
Posts: 40,577
What are you needing to hook up?? There are several places to get vacuum, both on the carb and intake manifold! In addition to that, there are many places that are "T'd" taps of the main vacuum lines that feed other things!
October 24th, 2011, 08:06 AM
#3
1974 DELTA 88
Join Date: Jun 2011
Location: Yavapai County, Arizona
Posts: 569
Do you mean where to find a vacuum hookup? Or how is vacuum created?
You'd find hookups on your intake manifold or carburetor.
The vacuum is created in the intake manifold by the induction stroke of the pistons pulling more air than the flow allowed by the throttle.
You'd find hookups on your intake manifold or carburetor.
The vacuum is created in the intake manifold by the induction stroke of the pistons pulling more air than the flow allowed by the throttle.
October 24th, 2011, 08:35 AM
#5
Connoisseur d'Junque
Join Date: Sep 2010
Location: The Hudson Valley
Posts: 21,183
+1.
Clarity is very helpful to everyone involved.
Also, I note that you hold the members of this group in such high esteem that you would use your first post to enquire about a non-Olds with a non-Olds engine.
Clearly, this should make us all feel good, as you could have asked your question on any of the innumerable Chebby sites, but instead chose to ask the folks on the one site that always has the right answer
.
Oh, and, Welcome!
- Eric
Clarity is very helpful to everyone involved.
Also, I note that you hold the members of this group in such high esteem that you would use your first post to enquire about a non-Olds with a non-Olds engine.
Clearly, this should make us all feel good, as you could have asked your question on any of the innumerable Chebby sites, but instead chose to ask the folks on the one site that always has the right answer
.Oh, and, Welcome!
- Eric
October 24th, 2011, 08:57 AM
#6
Old(s) Fart
Join Date: Mar 2007
Location: Northern VA
Posts: 47,352
In any case, there are MILES of vacuum hoses on the CCC system and they MUST be connected correctly for the system to work properly. They must also be in good shape with no cracks or leaks. Get a Chassis Service Manual and follow the diagrams. There is also a vacuum hose diagram under the hood (either on the air cleaner housing or on the radiator top plate).
October 24th, 2011, 11:10 AM
#7
Chevy didn't make a 307 in 1987 and if it is a Chevy 307, it was def swapped in.There should be a nice metal vacuum port screw type thing right behind the carb. You could "T" into that
October 24th, 2011, 11:50 AM
#8
Connoisseur d'Junque
Join Date: Sep 2010
Location: The Hudson Valley
Posts: 21,183
The 307 would have a small-bore 2GC with a divorced choke.
I oughtta know - I've got one in the corner of my old man's barn with 20,000 miles on it.
A very well preserved boat anchor.
- Eric
ps: looks like Joe missed it, too
.
October 24th, 2011, 03:15 PM
#10
Old(s) Fart
Join Date: Mar 2007
Location: Northern VA
Posts: 47,352
Oh no I did not. It's a VIN Y OLDSMOBILE 307 and it's factory installed, just like the one in my 86 Caprice wagon.
October 24th, 2011, 03:36 PM
#11
Connoisseur d'Junque
Join Date: Sep 2010
Location: The Hudson Valley
Posts: 21,183
October 25th, 2011, 12:10 PM
#12
Look at the above pic of the 307 SBC. Does your motor appear to be the same width? If you engine looks wider, it's an Olds.
Is the oil fill tube on the front of the block (Olds) or the vavle cover (Chevy)?
Does the distburtor go thru the manifold (Chevy) or just down into the block (Olds)?
Is the AC compressor on the pass side of the block (Olds) or the driver's side (Chevy)?
October 25th, 2011, 12:42 PM
#14
Registered User
Join Date: Jul 2010
Location: Montreal, QC
Posts: 2,175
October 26th, 2011, 10:23 AM
#16
Connoisseur d'Junque
Join Date: Sep 2010
Location: The Hudson Valley
Posts: 21,183
It was in a rust-free, 20,000 mile, dealer-maintained, always-garaged, never-driven-in-rain 4-door Nova.
Problem is, the elderly couple that drove the Nova (they drove it together - he was legally blind and she was deaf - he'd steer and she'd shout "Go Left!" "Watch out!" etc. - no kidding) had a bad habit of driving into things, and the outside of the car looked like melted butter. At the time we ended up with it, 20 years ago, no Nova had any value, least of all that one, so we pulled the motor "just in case," and crushed the rest.
And so the motor sits...
- Eric
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