Cliff's Quadrajet Parts and Rebuild Kits

Quadrajet Problem Solving => Quadrajet Parts and Numbers => Topic started by: thumper on December 01, 2010, 08:16:42 AM

Title: 1972 Corvette Carburetor
Post by: thumper on December 01, 2010, 08:16:42 AM: Hi everybody!

My friend is working on a 1972 Corvette with a 4 speed manual transmission, 350 SB.

The carburetor # is 704 2902, which I believe is for an automatic transmission.

On the drivers side is an electric solenoid which appears to position the throttle.

What is the difference between applications for manual and automatic transmission carburetors, and can this

704 2902 be corrected to work properly for an automatic transmission?

Thanks for any help, Thumper
Title: Re: 1972 Corvette Carburetor
Post by: 1979SE on February 27, 2015, 08:52:49 AM: Wow, I have the same question. My Q-Jet casting ends in an odd number, raising a question about a manual transmission application. (My car is an automatic.) What did your friend find out about this?
Title: Re: 1972 Corvette Carburetor
Post by: Ethan1 on February 27, 2015, 11:53:06 AM: This is a common misconception. A lot of Quadrajet stampings end in a odd number, but yet, came with a A/T. And vice-versa for M/T. Why Rochester did this, who knows.
Title: Re: 1972 Corvette Carburetor
Post by: 1979SE on February 27, 2015, 01:26:15 PM: Quote from: Ethan1 on February 27, 2015, 11:53:06 AM
This is a common misconception. A lot of Quadrajet stampings end in a odd number, but yet, came with a A/T. And vice-versa for M/T. Why Rochester did this, who knows.

Thanks, I'm seeing that. Good news, good news. But what do you make of that last character?
Title: Re: 1972 Corvette Carburetor
Post by: Cliff Ruggles on March 07, 2015, 02:40:35 PM: For the most part auto carbs will end in even numbers, and manual transmission carbs in odd numbers, but there are several exceptions to this basic rule. Quite a few of the exceptions are with Oldsmobile carburetors, and some Service Replacement numbers......Cliff
Title: Re: 1972 Corvette Carburetor
Post by: 1979SE on March 09, 2015, 11:54:42 AM: That would account for mine, then - it's for an Oldsmobile, and I also think it was a service replacement part.