I have vacuume ports everywhere on my Olds. Also there is a large port towards the front of the intake that goes all the way down to the vally pan. Does anyone have a pic or schematic on the vacuume line locations ona 71 W30.
Thanks,
Dave

 

someone correct me if i am wrong but i think that the w-30 had the pcv valve hooked to the port that goes to the valley. then both valve cover holes went to the air breather base.

 

That sounds like a good lead. Thanks

 

I'll second that one.