77 302 Vacuum Schematic

[w2erniej]

Looking for a vacuum schematic for a 77 stock 302. A/T, no A/C, no smog pump.

 

[Viperwolf1]

Not a schematic but this will list everything you should have. Calibration code is either 7-54L-R0 or 7-54L-R9. You might be able to find a schematic in a library with the cal code.

 

[admin]

Check the 1st link on the following page. Is that what you're looking for?

http://classicbroncos.com/webmap/Specifications/Factory_Diagrams/

 

[jckkys]

The '77s were surprisingly less complex than earlier Broncos. The vacuum tree behind the carb has only a big hose to the brake booster and 2 smaller hoses. One to the air cleaner snorkel flapper valve and one to the C4 vacuum modulator. The PVC in the oil filler cap in the pass. side valve cover, has short hose to a 3/8" steel tube to the front of the carb spacer. The vacuum advance is simply connected to the ported vacuum nipple on the carb. The EGR on my truck went away right after I bought it. I can't remember how it was plumbed. Be thankful you don't have earlier models that were more complex..
There is a great need for photos of correct original or restored engine compartments, for all years and engines. You rarely see an EB engine compartment that even vaguely resembles the correct original. Worse, the shortcuts and dress up parts don't work.
Brooklands Books publishes the Ford Bronco 1966-1977 book with photos from road tests written over the years of production. I use these and my memory of what my '77 looked like when I bought it new, to keep it looking close to original. Good luck.