Originally Posted by Cab_Burge
Originally Posted by Dragula
On my street/strip carbs when I encounter that, I usually have to drill out the front and rear IFR's....

Are you saying IFR are the idle fuel feed restrictors or the intermediate (AKA transition circuits) fuel feed restrictors: confused:
. I have always associated the IFR’s to the idle and transition circuit. They feed both the idle discharge hole and the transition slot. I believe that my problem is an off idle lean mixture. I’m looking for confirmation on way or another. This carb is a 1050AN. The only thing I haven’t touched is the IFR’s. Your thoughts???

Last edited by 68LAR; 09/17/22 10:40 PM.
4 speed street legal. Best time 10.99 @ 124 mph on 93 octane pump gas @ 3926# total weight