NewmanFirstgen

I need to ID my Holley Carb. I can't find any numbers on it that correspond to any holley part number.. It was purchased through MazdaTrix and may be a RacingBeat item.. It also has the RB intake and airfilter assembly. How can i tell what size it is?
Are all holley jets universal? how about Vacuum Secondaries engagement springs?

I am going to tune it and need to get some parts before i try, But i need to know what model it is, how can i find this out?

mwatson184

Post a picture and I'll tell you what size it is.

NewmanFirstgen

found a number on the air horn 3559 is this the model?

mwatson184

The only 3559 I know of is a metering block number. Any more numbers on that air horn?

mwatson184

Let's do it this way.

Give me a measurement of the throttle bores (bottom side of carb). Are there any vacuum diaphrams on the carb? If you pull the primary throttle all the way open, do the secondaries open as well?

nakedfzone

I have the same carb and the same problem ordering parts. I will try to take a picture tonight.

nakedfzone

Newman, This is weird because that is what my wife calls me. Forgive me for stealing your thread, but I was able to take pics, and I think my carb is the same as yours. I called RB and they were somewhat evacive. The guy I spoke to said that you had to send the carb to them to have a re-build done or replace parts. Pics follow...

nakedfzone

I believe that the two parts indicated are proof that this is an RB carb. On the left is the tap into the bowl for the lines fromt them OMP, and on the right is some kind of linkage I have been told is installed by RB.

nakedfzone

Other side... Note the hot air choke. The vacuum line on mine is capped, I don't know if it is working or not.

nakedfzone

Well, I've had something else happen. A couple of days ago for no apparent reason my car started idling very slow, like 300 rpm. Not sure what's going on... Can anybody id this carb for me?

mwatson184

It is either an RB Holley 465 or 600. If you can get the measurement on the throttle bore I can tell you for sure. I'm not sure if RB grinds the numbers off the jets. If you pull one of the jets out of the primary side and there is a number on it, if it is in the upper 40's/low 50's, it is most likely a 465. If it is in the low 60's then it will be a 600.

-Marques

nakedfzone

I am not sure how to pull a jet. {Headed to the Holley website}

mwatson184

Pull off the four screws on the primary side float bowl. Pull off the float bowl. Can't miss the jets.

-Marques

NewmanFirstgen

Just ordered a vac secondary spring kit for my holley.. 13 buck for the whole set... hopefully i can get it to open a bit sooner.. more power before 4 grand? has anyone tuned their holley yet? what color secondary spring do you run? what size priimary and secondary jets? I think my primaries are a size too big and my secondaries open too late. we will see.

Whats the price of the jets? anyone know?

nakedfzone

I just had my car dyno'd. My AFR was 13.0 so I think I am jetted perfectly.

NewmanFirstgen

so what kind of #'s did you pull? stock, street port, what. exhaust?