Speaking of 4100's, has anyone worked with those, either single or dual?
4100s are great - good luck finding decent ones for any reasonable price.
I have several, and still use the factory one on my '65 Galaxie. Easiest carbs in the world to work on, darn near bulletproof/trouble free, but like Chris said, good ones are hard to find now. The biggest problem I've found is trying to tune them. Rebuild kit choices are limited to say the least, and performance upgrades just don't exist. You're on your own. Holley jets don't work, and Ford only has 2 jet sizes that were used in them. Doesn't give many options. I'm sure guys have found lots of ways around that, but highly modifying them for big power is more work than it's worth, unless you're restricted by rules.
