I know that there is something im looking over to answer my question. I got an Edelbrock 1406 carb, and there are the two rods that are removed at the top of the carb. Is one of these the primary and one the secondary? IF so which is which?

 

They are BOTH secondary metering rods. One for each "barrell".

 

Which ones are the primary?

 

There are no primary metering rods. Primary circuit is always in use, and are simply jets at the bottom of the fuel bowl.

They are referred to as "secondary metering rods" because they meter fuel for the secondary circuit. (clear as mud????)

 

Other way around. The primaries have metering rods, the secondaries don't.

 

Uhhhh, 'scuse me??? THen why are the rods on the back two barrels of the carb? Why do the rods move when the secondary butterflies move? (and not when the primary are opening?)

I know that some carbs with the MC solenoid DO have metering rods on the primarys as well, but, I dont think that is the case here.

 

So what your saying is, to tune the primaries, change the rods and to tune the secondaries, change the jets?

 

Because it's an Edelbrock, not a Quadrajet.

Quadrajets have metering rods on both the primaries and the secondaries.

 

To tune the primaries, you can change the rods and/or the primary jets. For secondary tuning, you change the secondary jets.

 

ok, thanks

 

Ooops, my bad. Used to the old style......... Went looking, and you are quite correct. Sorry 'bout that.