View Single Post
Old 08-13-2013, 08:30 PM   #113
awbrown
Registered User
 
Join Date: Aug 2009
Location: Detroit MI
Posts: 1,209
Re: 1966 GMC 305 V6 Service

rufton , what port do you have the vacuum on now ?? From what you are telling us it looks like it is on the ported vacuum , it should be on manifold vacuum .. all the vehicles I have had got much better milage on manifold vacuum than ported...
awbrown is offline   Reply With Quote