Carb issues

[Wally426ci]

Im running a 1407 edelcbrock (750cfm)

Im doing some "tuning" and i have the jet/metering kit. I know that each application is different. Im running a stroked 360 and Im just wondering.... can anyone say if the primary jets are usually larger than the secondaries or vice versa? my "metering" jets are @ 413 and the others are 410's at the moment......

 

[GoodysGotaCuda]

my primaries are smaller than my secondaries. by .003"

 

[oldkoot]

Out of the box the primary jets should be .113, the metering rods .071x.047. The secondary jets are .107. Since the secondaries don't have metering rods they are in fact larger than the primaries when looking at fuel flow.

 

[Wally426ci]

So it sounds like i need to swap the jets and try running larger secondaries.... :glasses9:

 

[oldkoot]

Do you have the Edelbrock tuning book that came with the carb? Unless you are having a specific problem, I wouldn't start changing jets and rods. If it were I, install a wide band 02 sensor and see what the actual AFR is .

 

[Wally426ci]

Woops, already started. I can take it back to original jets but they were super tiny! Ugh....