I have an 1987 Grand Wagoneer and I am updating the Carb and Intake to Edelbrock performer and the 1406. This is the non EGR package. I hate Vacuum. My last rebuild, a CA built 66 mustang with emmisions had one vacuum line on it when I was done.
I want to know what I have to keep and what I can trash. Please keep in mind that for this beast I do not want to kill my MPG either and would rather keep more vacuum that sacrafice fuel efficiency. My GW does not have a smog pump, was not CA built but still has a ton of vacuum. I know I have competing motives here so I am looking for advice from someone who has removed their own vacuum lines to tell me what can go and what the MPG difference was.
While these pictures aren't specifically of the vacuum lines, they do show minimal amounts of 'stuff' in the engine bay. I intend to clean it up a bit more as I go. I still need to remove the hose/lines that mount to the exhaust manifolds. I'm afraid to snap off a bolt though...
When I put a 1987 engine in my 1973, the 87 engine was covered with a web of vacuum lines. CTO's everywhere.
I ended up using my 73 intake on it, which already had the EGR deleted, and all the smog crap was long gone. I believe the only vacuum I have no is the brake booster, the PCV, transmission modulator thing, HVAC and Advance for the dizzy.
I assume you run it off the carb. I have the stock 2 barrel. I currently have it run off the front right port (facing the engine).? Also, I've installd warn locking hubs on my 86. Do I still need to hit the vacuum switch when engaging the 4 wheel drive? I assume not.
Be absolutely, positive that you lock in the hubs BEFORE you engage 4wd, or you will be learning how to swap a transfer case. If 4wd is engaged and the hubs are not locked in, all the power will be going to the front (least resistance), and it will fry the viscous coupling in the transfer case.
"I like fun" Edd
Clawed: 90GW, TFI, Streetfire, 3"lift all spring, 31"BFG ATs, working RKE, Edel2131, Holly 1850, mild cam,
05 Renegade OME 927, 947, top plate, JBA 4.5s
"Just Jeepin it real"