Carb mod ideas

My car runs superb with my Carter 2bbl now after my mods. I was wondering why this carb that was original and factory installed ran good in the 'old days' but ran like crap now?? I think the realization is that the gas then and now is not equal! It's not really an issue of octane but rather of composition. Even gas free of ethanol, if there really is such a thing, is still oxygenated as I understand. Those with E-85 cars know that it takes almost 20% more fuel when using E-85. If you convert to E-85 it requires much more fuel delivery. Now we're not talking using E-85 but apparently all available gas is somewhat different and needs more to operate the same. I found that drilling my jets out with a 1/16" bit and swapping in a spring from my Eddy collection absolutely worked wonders! The Carter surged badly before and the Holley which was also stock surged equally. This indicates a lean mixture. I feel if I increased the Holley correspondingly it would also perform admirably.

If any are running carbs that are surging I would suggest this simple cure. Probably just changing only the spring may be enough to significantly improve function. I used a Eddy blue spring which is the weakest one of the five springs Eddy uses. I did the old finger pressure test (?) and determined this one was a bit stronger than the stock. These can be purchased separably in a pack with all five sizes. I don't know anything about the Holley, yet, so I can't make any suggestions about it. I do know it surged when I put it on my car but it was a little better than the Carter.

Now I don't feel so anti-2bbl as I had before. It is possible to get it running decent with a bit of simple tweaking.

Rich Kinsley '64 Dodge Polara 4dr LeRoar 318poly w/less goodies