Vacuum control valve question
Thread Starter
|
New User
Joined: Nov 2014
Posts: 13
Likes: 0
Vacuum control valve question
I've seen mixed information when I searched this question, so I'm hoping someone can clearly explain this to me.
I have a 78 f100 351m and I'm trying to make sure the vacuum lines are correct. Everywhere I look says the vacuum advance should go to the middle port on a VCV, so I've got that. The other two have me confused. First, is the hot open port always the one closest to the thermostat housing and the cold open the one furthest?
Second, should the vacuum manifold go to the hot open port and the ported vac on the carb go to the cold open port, or the other way around?
Thanks.
I have a 78 f100 351m and I'm trying to make sure the vacuum lines are correct. Everywhere I look says the vacuum advance should go to the middle port on a VCV, so I've got that. The other two have me confused. First, is the hot open port always the one closest to the thermostat housing and the cold open the one furthest?
Second, should the vacuum manifold go to the hot open port and the ported vac on the carb go to the cold open port, or the other way around?
Thanks.
Postmaster
Joined: Jan 2013
Posts: 3,512
Likes: 3
From: Panama City
Maybe this will help. It is for a 79 but should be the same I think.
78/79 Emission & Vacuum Diagram Picture Reference - FSB Forums
78/79 Emission & Vacuum Diagram Picture Reference - FSB Forums
Thread
Thread Starter
Forum
Replies
Last Post
mmmmoore24
1973 - 1979 F-100 & Larger F-Series Trucks
6
Jun 25, 2014 02:57 PM
LARIAT 85
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
7
Nov 6, 2010 04:08 PM
Nathan Plemons
Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
4
Apr 7, 2010 08:37 AM
psquare7575
Fuel Injection, Carburetion & Fuel System
4
Jan 30, 2008 08:48 AM
scotts77
335 Series- 5.8/351M, 6.6/400, 351 Cleveland
9
Mar 8, 2004 08:16 AM
