1990 VNT (Daytona, Lebaron, Shadow, Engine Code "C")
From the Vacuum Block you need to connect to the...
Fuel Pressure Regulator
VNT Solenoid #1
When re-doing your vacuum system do not forget about the lines from the L/R of the manifold to the cruise and air box.
There is an Orifice on VNT Solenoid #3 right on the port, reuse that Orifice.
The majority of the vacuum line is 5/32" and 7/32".
I used Thermoid brand vacuum line which is thick walled and is availbale in 6' lengths at Advance or in bulk on eBay which is much less expensive in the long run.
The majority of the fittings needed will be a Dorman/Vacu-Tite assortment.
There are a couple of other fittings you will need and can get at Rock Auto.
I removed and switched positions of the Air Charge Temp Sensor and Factory Vacuum Fitting in the manifold to allow more room for the vacuum block.
The vacuum block comes with a tee that would be attached to the manifold port with a rubber line.
I attached mine with Anodized Aluminum Fittings to avoid a larger rubber line that will dry rot/crack/fall apart.
All lines are wrapped with 3/8"/1/2" split wire loom to protect from heat/chemicals/rub thru.
That can also be purchased in bulk on eBay at a lower cost.
ALL connection points need to be secured either using small wire ties pulled tightly to clamp or fuel injection style clamps designed for 5/32"/7/32" vacuum line.
My experiance is that wire ties will become brittle over time and loosen from expansion/contraction.
I used the clamps to be sure that all connections will remain tight.
The VNT is very sensitive to vacum issues so it is crucial all connection points are tight/secure.
I also used "Single Bond Clamps" to tie the lines together for a neater/cleaner look rather than using wire ties which as already stated loosen and break.
Vacuum Fitting Assortment Dorman/Vacu-Tite 47380
Help/65 pcs. vacuum tubing connector assortment (47380) | Vacuum Connector. Universal Type | AutoZone.com
Rock Auto Parts(Online)
4 Way Fitting Dorman #47357
(needed to install lines to VNT Solenoid #2)
3/16" 90 Degree Elbows Dorman #47413
Clamps (8-9.5mm and 9.5-11.5mm)
Fuel Injection Hose Clamps
Universal Six Port Boost FPR BOV Vacuum Manifold Block | eBay
Vacuum Line 5/32" and 7/32" (Bulk on eBay)
VACUUM HOSE HI-TEMP 5/32" X 50 FT ROLL - USA MADE - NEW | eBay
NEW ROLL OF 7/32" RUBBER VACUUM LINE HOSE 50 FT ROLL | eBay
3/8" Split Wire Loom (Bulk on Ebay)
40' of 3/8" Split Loom Wire Protector Shielding Harness | eBay
Anodized Aluminum Fittings(Summit Racing)
(Assuming the vacuum block is 3/8" NPT)
You can search the site for different colors.
Two -6 AN x 3/8" NPT
Summit Racing SUM-220648 - Summit Racing® AN to NPT Adapter Fittings - Overview - SummitRacing.com
-6 AN Female 90 Degree elbow.
VACUUM BLOCK AND LINES