Help Identifying Rochester Carbs

Trying to find out the story with these carbs for my uncle…

Chevy Tri-Power.

The middle carb has a part # that comes up as a 1967 GC.

The front and rear carbs look a little different and I can't find a part # although they do say GM Rochester on 'em…







Are these a matching set? It doesn't look like it to me, but I only know what I'm learning searching the net the last couple days.

Thanks
Anthony

 

Front and back carbs are 58 and earlier. The fuel inlets are on the front. 59 and later moved to the left side of the carb like the middle one. I don't see air/fuel mixture screws on front or back carbs either. Have they been filled in or are they the real deal and factory end carbs? Also front and back should not have chokes either. Basically those two carbs are just dumps. I had this setup in my 59 Impala convertible with a 3x2 348. Hope that helps you a little bit.

Travis

 

I'll have to go back and see if they're filled in or not.

This'll probably sound stupid but wtf, do the front and rear carbs have chokes? New ground for me.

Thanks for the reply Travis

Anthony

 

The end carbs not supposed to have chokes. The middle carb has the choke and the idle circuit and air/fuel mixture screws. The front and back carbs are strictly dumps with no chokes, fuel mixture screws, or idle circuits. They do have the plunger thingy in them that squirts fuel in the venturis to get them going. When they open up, the engine ****s down the fuel. Basically a Rochester 2GC is the center carb. The C is for Choke. The ends should be Rochester 2G's. There is a guy on here who is very knowledgeable and will be able to answer your questions better, but I can't remember his name. I'm only going on what I learned with my Impala. But it was a great set up and I want to run another 3x2 on my 283 in the coupe I am building now.

 

I appreciate it. I'm helping my 64 year old uncle. My other uncle that was a mechanic recently p***ed and left my uncle a bunch of stuff. He knows what it is basically, but not the details. I'm also researching a set of dual quads he has and some old ****** that I think is a 2 speed that was used for racing or hotrodding. It'll be interesting.