Holley carburetor tuning

Categories: [Cars]

Tuning Holley carbs is fun. Depending on how rich or lean you are (that is, the carburetor) you'll probably want to get a few jet sizes bigger and smaller (a pair of each) and test each one. Make changes one step at a time. Depending on how much you pay for the pairs of jets, it may make more sense to get the whole kit -- you get no. 64-99 jets (a pair of each) for like $30-40. You'll also need a new set of bowl and block gaskets (maybe get the neoprene ones). You might get away without a block gasket, but it's better to have one around and not need it than the other way around. Spray gasket remover will make the job a lot easier. Have a can of carb cleaner handy. You may also need float bowl screw gaskets, I like the Moroso plastic ones if you're going to open the carb up a lot.

To do this you'll need a 5/16, 3/8 and 5/8 wrench (preferably box), a large flat-blade screwdriver (around 1/4" tip), optionally a stubby flatblade the same size, a small flatblade screwdriver, a small can to catch some fuel (tuna cans work well), and about an hour if you've never done it before and have all the tools and parts.