Hi folks, long time no see.
I've decided that I'm finally going to convert my 66 Polara with a 318 Poly engine to a 4bbl carb set-up. My rationale, in case you're interested (though I've made up my mind) is that my mileage already sucks, so a little more fuel consumption isn't going to bother me to get what I perceive to be the benefit. That benefit being a more "tune-able" carb and more consistency. After my questions, below, I'll tell you what my journey has been with the 2bbl set-up.
I already have intake manifold for 4bbl. I bought it on Ebay a few years back and never followed through. It's a cast iron manifold, presumably from a truck. I could not find the discontinued Weiand manifold anywhere.
So, here are the questions. Has anyone here done a similar swap? What are the pitfalls. Anything I should know? Clearance issues with the new carb/air cleaner? Which carb should I get? Why?
The guys at the shop I used to use were hot on FiTech but it seems too rich for my blood and unfortunately I've been down too many rabbit holes with them on this car. My instinct tells me to go basic.
Now, why I don't like my 2bbl set-up. It seems to me that the Stromberg 2bbl carb is a fiddly thing. At one point, a mechanic I used to use swapped it out for a Holley but it was worse, so I had my old Stromberg rebuilt and put it back on. But eventually the fitting where the fuel line connected to it wore out and I ordered a rebuilt Stromberg from Summit Racing. But that one almost immediately came up with a leak. Plus there's the little issue that on the odd occasion I floor it, the car almost always lurches forward then hesitates to the point of almost stalling.
I've decided that I'm finally going to convert my 66 Polara with a 318 Poly engine to a 4bbl carb set-up. My rationale, in case you're interested (though I've made up my mind) is that my mileage already sucks, so a little more fuel consumption isn't going to bother me to get what I perceive to be the benefit. That benefit being a more "tune-able" carb and more consistency. After my questions, below, I'll tell you what my journey has been with the 2bbl set-up.
I already have intake manifold for 4bbl. I bought it on Ebay a few years back and never followed through. It's a cast iron manifold, presumably from a truck. I could not find the discontinued Weiand manifold anywhere.
So, here are the questions. Has anyone here done a similar swap? What are the pitfalls. Anything I should know? Clearance issues with the new carb/air cleaner? Which carb should I get? Why?
The guys at the shop I used to use were hot on FiTech but it seems too rich for my blood and unfortunately I've been down too many rabbit holes with them on this car. My instinct tells me to go basic.
Now, why I don't like my 2bbl set-up. It seems to me that the Stromberg 2bbl carb is a fiddly thing. At one point, a mechanic I used to use swapped it out for a Holley but it was worse, so I had my old Stromberg rebuilt and put it back on. But eventually the fitting where the fuel line connected to it wore out and I ordered a rebuilt Stromberg from Summit Racing. But that one almost immediately came up with a leak. Plus there's the little issue that on the odd occasion I floor it, the car almost always lurches forward then hesitates to the point of almost stalling.
