[unruhjonny]

I have a stash of carbs that I am looking to downsize, and as time has permitted, I have been correcting & assembling (not to be confused with rebuilding) my pre-smog Pontiac carbs.

It has been my observation that for the 1972-1974 Rochester quadrajets the 1974 GTO/automatic quadrajet (7044268) has a unique throttle lever, as the conventional location for the throttle return spring has been modified and enlarged to permit a TH350 kickdown bracket to mount, and still allow room for the throttle return spring;
I had presumed and/or understood that this was the case because between 1970 & 1974 the P350 was never offered with a 4bbl carb - except for the '74 GTO.

Now, was replacing some missing parts on what I presumed to be a full sized car 4bbl (7043266), and comparing it to my correct for a Firebird 455/4bbl carb (7043262), when I happened to notice that the '266 carb has the same throttle bracket as the '268.

Now, it is possible that purely by chance I have identified that this remanufactured carb has received a rather rare '74 GTO/auto baseplate, but I'm guessing that this is unlikely...

Can someone please give me the original application for this 7043266 carburetor?

[Robert Williams]

Late 1973 Pontiac A F and G cars 400 ci auto trans and flows 750 cfm...

['ol Pinion head]

Have been privileged to get into several massive stocks of nos correct dated, rochestor rebuilts, & mass rebuilder rebuilt muscle era Q-jets. During this time, have ran across numerous '72-74 Pontiac Q-jets that have been through mass rebuilders & the throttle shafts had been swapped into other usage Pontiac throttle bodys. On another front, many times Rochestor service replacement Q-jets while having the correct throttle shaft, used later application part number (in the little circle) throttle bodies.

[unruhjonny]

Originally Posted by Robert Williams

Late 1973 Pontiac A F and G cars 400 ci auto trans and flows 750 cfm...

weird, I looked and didn't see it in my (1976 dated) Firebird MPC!?

I was guessing it was a 400/auto, because the same '266 is used for 1974.

Thanks guys!

[unruhjonny]

Originally Posted by 'ol Pinion head

Have been privileged to get into several massive stocks of nos correct dated, rochestor rebuilts, & mass rebuilder rebuilt muscle era Q-jets. During this time, have ran across numerous '72-74 Pontiac Q-jets that have been through mass rebuilders & the throttle shafts had been swapped into other usage Pontiac throttle bodys. On another front, many times Rochestor service replacement Q-jets while having the correct throttle shaft, used later application part number (in the little circle) throttle bodies.

I've seen some weird modifications from remanufactured Quadrajets - which is wjy I generally stay FARR away from them...
My most recent, will be my guinea pig carb;
It's an OEM '0263, that was butchered, and not only was a vacuum line added to the main body, but the chevy truck style baseplate vacuum line was also added;
I've decided to build this one to '0273 specs - and use for PSMCD;
I just finished plugging and filing the added vacuum lines, and adding the correct primary butterflies