Have a 750 cfm vac. carb. I've built engines etc., but I've never had or wanted to rebuild my carb. We'll know I need to rebuild the carb. It has been setting for 12 years. Anything special, hints or other info would be greatly apreciated. thanxs david

First let me say that I am not a carb expert but have disassembled and reassembled various car and motorcycle carbs and they worked perfectly after.

So long as you are starting with a good "rebuildable" core it is quite simple especially on a holley.

The carb I am running now (3310-750 vac sec) came from a swap meet for cheap and for the price of a holley rebuild kit it is as good as new.

Just pay attention to detail when you disassemble so you will be able to reassemble correctly. Some things should not be disassembled, such as the throttle plates and shafts.

Make sure all the air fuel passages are clean, check the floats for leaks, clean gasket surfaces, check jet size against stock (good place to start). So long as it is clean and the float levels are set right and change accelerator pump diaphram you should be ok. Check the vacuum diaphram for the secondary by opening secondary and holding the vacuum hole, if it holds the diaphram is ok.

When reassembled make sure throttle plates operate freely, secondaries open freely when primaries open, accelerator pump linkage should move as soon as primaries open, check choke adjustment if electric/manifold heated.

Idle air adjustment try one turn from closed to start, set idle, check float level (this can be dangerous with gas leaking out on a hot engine) if the level is above the sight plug. Depending on your engine setup and altitude you may want to change your jetting accordingly. This is an area you need to exercise some caution and seek advice if you are not sure what to do.

There are some real carb wizards on this site that can advise on tuning and other tricks, but what I have described is basic back to box stock stuff that anyone can do.

A trick to adjusting the float level without spilling gas everywhere is to adjust it when the bowl is off. Make sure the top of the float is even with the bottom of the sight plug. Like Sandy said it is pretty simple just dont take apart things that dont need to. Also, keep track of all the little parts what I do is steal some tupperware out of the kitchen makes for a good holley parts box.