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View Full Version : 1977 360 Vacuum diagram

cnew
07-26-2003, 05:14 AM
If any one has this or knows where I can find it - I would appreciate it.
tgreese
07-27-2003, 06:21 AM
You can figure it out from the FSM (factory service manual) - there aren't that many devices in '77. Just look at the chart of which emissions control devices that you have, and go to the fuel/emissions sections pertaining to each device. I believe you'll have spark (3 lines, or 4 with TCS), EGR (3 lines), canister (a few) and air injection purge vale (1 line?).

hth :cool: Tim
cnew
07-27-2003, 06:44 AM
The thing is I don't have a service manual. I was hoping someone could send me a scan of that page or pages..

Thanks
joe
07-27-2003, 07:04 AM
Check out Tom Collins web page. He doesn't have the 77 stuff but the 76 diagrams should get you by so far as the routing goes.
Vacuum Junk (http://dei-services.com/gw/vac/GW_vacuum.html)
letank
07-28-2003, 08:30 AM
look here for the 74...... 77 should not be too different

http://groups.msn.com/leclic

Michel
PhilSine
07-28-2003, 08:42 AM
Welcome to the board dude. Fill out that profile and signature a bit more so we can all know what you drive and where you're at. This group is pretty good about not abusing info.

Depending what state you're in here's what you absolutely need for vac lines.

1 running from front of carb to vac advance on dist.
1 bigass line tee'd off from the back of the intake manifold going into the following places
a) heater control on left side of dash
b) Emergendy drive switch inside glove box
c) the vacuum guage that you added (or NEED to add) and mounted on your dash somewhere.

From the heater control there will be 2 lines. One going to the heater vent, the other to the defroster vent.

From the E-drive switch there will be 2 lines going to the inputs on the rear, top of the transfer case. This is your switch to lock the driveshafts together for full tome 4wd.

Unless you have had smog equipment added there should be no other devices that require vacuum. You may be able to go without a catalytic converter and the PCV charcoal canister (depending on state regs). You still need a PCV valve to relieve crankcase pressure.

[ July 28, 2003, 02:45 PM: Message edited by: PhilSine ]