Thanks guy's for the replies on the dual 4 question. Any leads on where I can get the rubber plug for the valve covers for a 401, also the plug for the PCV valve. Thanks in advance.
Hey bs. Cars, Inc. in NJ has them. They can be overall pricey for things sometimes. But when your the only one with the parts, I guess it doesn't matter. Website is oldbuickparts.com . OPG or year One might also have them. Don
I have bought a lot of parts from CARS. Quality has always been good. I found a NOS valve cover plug on Ebay last year for 8.00 still in the original GM package and the rubber was still soft. If your not in a hurry for one keep your eyes open they show up once in a while for sale. Kasey