Greetings all,
I have a 261 cuin engine in my 1951 chev PU that I have installed a dual action fuel pump on and don't know what the lower four (4) holes are for. The pump has two holes on the left side and two holes on the right side, these holes are on the lower sides of the pump. I bought the dual action pump for my wipers so I have lots of vaccum. Which hole(s) do I use to hook up my vaccum wipers to? Thanks Lloyd from Washington