Baseline jets and accelerator pump cam suggestions...

[Krooser]

I'm going to rebuild a couple 4412's I just bought… anybody have a baseline suggestion for jets and pump cams? These carbs are set-up way different from each other...

[50j]

Nobody can suggest a jet size without knowing what's been done to them. You'd be 1000x better off to have them worked on if you want to be competitive.

[DaveBauerSS6]

Like 50j said, more carbs are being built with the main metering being jetted down and the power valve circuit being opened up. If they are stock you are ok, if they are a built carb from a shop call the shop, most will tell you. Don't mix and match.