390 Edelbrock Performer RPM manifold vacuum [Archive] - Classic Cougar Forums

: 390 Edelbrock Performer RPM manifold vacuum



andernd
March 21st, 2010, 02:06 PM
I have an Edelbrock performer RPM intake manifold on my 390. Finally getting to routing the vacuum lines for the AC/Tilt wheel/headlights/brake booster. The manifold does not have a port for the vacuum fitting. What have some of you done to resolve this issue? There is a port on the front of the engine on one of the intake runners. Concerned about pulling the vacuum from one cylinder.

Thoughts?

Four-55
March 21st, 2010, 03:15 PM
Wow just looked at a pix...you are right no hole in the rear for vacuum, unlike the regular performer, that seems like a poor design...you are going to have to use the front(not conveinet at all) I dont see a way around it...I dont think it will effect too much since those items are not under constant pull...

andernd
April 3rd, 2010, 08:29 PM
Attached is a picture of what I decided to do for vacuum with the manifold. Comments?

Four-55
April 3rd, 2010, 08:30 PM
as long as it works thats what counts...........

Greenturbo
April 4th, 2010, 08:44 PM
i have also frilled and tapped a carb spacer plate for a vac source before, but Andernds way looks good