Originally Posted by ga traveler
On this vintage motorhome Chevy used a electric fuel pump at the fuel tank. It was used to push fuel to keep from having a problem with vapor lock. This IS a pressure regulator to regulate the pressure from the pump.
Hi Guys! I'm sorry for not getting back here over the last 36 hours or so. Life got in the way. Yes, it is a carburetor on a 454. Have not eye-balled the electric pump yet, but I suspect it's behind a cover where fuel hoses are leading just behind the outer passenger wall behind the rear wheels, opposite the regulator mount adjacent to the fuel tank.
In any event, I removed it yesterday. Although it is possible that it just needed cleaning, I made a decision to get a new one. I'll keep the old one and see about cleaning, or maybe seeing if a kit is still available.
In the meantime, right or wrong, I ordered a Holley 12-803. This model is for a carbureated motor. By purchasing it thru Amazon online, I was able to receive it overnight. Got it delivered as I'm writing this.
It has a range of 4.5-9 psi. Just for reference, I put a call in to Holley and they indicated that I need about 5-6 psi for my particular motor/carb. Holley indicated that the regulator should be fine for that without adjustment.
I will install it within the next few days and report back.
Thanks for the replies.