carter 318 carb

[bad440]

installed super six intake,and carter carb originally on a 318.runs a whole lot better than the one barrel ever did.only thing is it idles a little high.there is a small hole in each butterfly like you would drill in a holley for more air with a radical cam.if i fill those do you think it will slow the idle?it only needs to come down about 100 rpm.

 

[hotstuff1]

the only time you drill a hole in the throttle plates is for idle quality {high lift cam] ,to rich ,I would fill them in or better yet swap out the throttle plates.

 

[bad440]

i know that,the carb came stock with the holes .i'm asking if i fill them would it slow the ldle.

 

[hotstuff1]

by plugging the holes there will be less air bleed off, which will richen the idle circuit . You will need to recalibrate , but this should give you more control over the idle screw adjustment in turn allowing you to slow the idle RPM.