Few questions about my upcoming rebuild.

[y5mgisi]

Hi folks! I have a few questions about my rebuild. This is a carb i got from a guy in trade for my Edelbrock 1400. He DD the truck it was on but knows nothing about the truck other than his dad gave it to him. Neither of them are "car guys" so they lept at the chance to trade my edelbrock for their quadrajet.

First, Is my choke pull off set up right? THere is no linkage off the forward unit, and it almost seems as if it may be off alignment from the parts below it? Just me? Or does it look off?





Second, I dont remember ever seeing idle mixture screws screwed nearly all the way in, but these ones are screwed so far in that the pertrude into the bore by a good .040". Not normal right?

Thats all for now. In the mean time, im enjoying reading my Cliff Ruggles Quadrajet book!

[429bbf]

y5 welcome aboard. if you have a qjet problem it can be solved hear. now to the questions . from what i can see in the picture the choke pull offs look right. test them before you order parts they can be bad . also give us a carb no.it looks like a mid to late 70s carb . some of the idle mixture screws are below the front surface  of the carb. hope this helps.

[Ethan1]

 Welcome to CHP!

 The secondary pull off looks correct. As for the idle mixture screws, can you post a photo of what you are talking about?

[y5mgisi]

Thanks fellas! Naturally i neglected to take a pic of the idle mixture screws... I'll do that tonight. I'll certainly be testing the chock pull offs! Here is a few more pics of the carb. Its supposed to be an 82 truck model from what im told. Im going to convert it to electric choke and stick it on my 78 GMC pickup in place of its old Edelbrock. Heres some pics.














And the truck,

[429bbf]

idle screws look right. nice carb, i like to build them they are good castings . the number says its a 1982 built the 200th day of 1984. ps the idle screws should be metric thread .cliff will have all the parts you need with the best quality parts . electric choke is an easy conversion.

[y5mgisi]

Finally uploaded my idle mixture screw pics. What do you think?

[429bbf]

well its been worked on . i dont recall them screws having screwdriver slots . later years have doudle d heads .check everything out real close when you take it apart .i seen some strange stuff people try to do. and ill bet cliffs seen about everything that can be done wrong and then some.if the idle holes are bored to big you may have to cut a rung of your springs to get the screws to seat.(not that there going to be seated when its built) i just like to know that they can be seated to control the idle fuel .fwiw

[Cliff Ruggles]

Nice carb, and a good choice for what you are doing.  Check the pull-offs to make sure they hold vacuum, and give us a call when you are ready for parts.  We stock both pull-offs, and kits for that carb number....Cliff

[y5mgisi]

I suspect the fella (or a fella) that rebuilt it ran them in and adjuetd the idle screw up until it would idle ok.

Cliff, Thanks! I will be checking both pull offs. I will also be ordering some parts from you!

So my next question,

I have a hot air style quadrajet that i want to swap to electric choke. I read that the vacuum passage between the choke housing and carb body needs blocked off. How are folks normally going about this? Thank you!

[Ethan1]

I suspect the fella (or a fella) that rebuilt it ran them in and adjuetd the idle screw up until it would idle ok.

Cliff, Thanks! I will be checking both pull offs. I will also be ordering some parts from you!

So my next question,

I have a hot air style quadrajet that i want to swap to electric choke. I read that the vacuum passage between the choke housing and carb body needs blocked off. How are folks normally going about this? Thank you!

 Maybe soldering up the passage would be one way. I am sure there are other ways as well. Cliff will know.

[429bbf]

everybodys different i like to tap mine and put an allen head screw in.that way it sits flush and doesn't cause any problem . also you can take it out if you want to put it back to original.i tap it to whatever the size tap fits cant remember.no drilling or messing around .fwiw

[Ethan1]

 That's a good idea as well.

[hunter55]

A 10-32 set screw works well.