Best 4bbl

12many said

As you may know, the best carb is one that has been tuned/dialed in after it’s installed. No carb is setup ideally out of the box, you might get close or even luck out and actually be pretty spot on just bolting it on and simply adjusting the idle and mixture screws. The composite body 625 Street Demons are nice carbs that are pretty easy to work on. Mandatory that you get the tuning kit for it as well. After some tuning I think you’d be pretty happy. There are others but that’s what I’d go with as I’ve tuned both the 625 and 750 versions and they work good

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While I'm a known fan of the Holly Street demon I would say all carbs have to be checked.. tomorrow I'm reinstalling a 750 on a 65 Pontiac 400 and the float bowls that are supposed to be set at one inch one was set at an inch and a half and one was set at a quarter from the factory.. way off... And as far as buying one of those 80 or $90 tune-up kits not a fan either.. first off they give you yet another set of metering rods and jets that are already in the carburetor. And also you're likely going to go one way with it like leaner or richer so just bring a set or two of jets heading in the direction that you need for your particular setup would be much cheaper than an entire tune-up kit with again not only the Jets that you have and metering rods you have with the ones going the opposite way of the way you want to go... I would also recommend a $4.95 Edelbrock Summit brand spring kit as opposed to the demon Springs which are colossally expensive or even the Edelbrock Springs which are way over twice as much as the summit knockoff step up Springs....