The Stovebolt Site Forums The Shop Area Engine Shop zenith carb specifications

Would any of you know where to find the detailed specs for zenith carbs? I found a site once that had all the specs for the different carbs but can no longer locate it.... looking to find details about jet sizes, venture sizes, base size, throat size, etc...

looking to compare zenith carb 2341685 11963 with 2343632 11965. I will be putting this on a 1962 chevy 261

thanks..

ive seen those breakdown pics but am looking for numerical specifications if they exist...

I have not seen a site that breaks down all the Zenith carbs like that but I did look up the two numbers in my Zenith data book.
11963 specs are as follows: Model:228BV11, Venturi #33, main jet #31, Power jet #20, well vent #16

11965 specs are as follows: Model:228BV12, Venturi #34, main jet #33, Power jet #18, well vent #15

Both were used on late 50's GMC 270 engines. Jetting and venturi sizing may be too big for your 261. Check mount hole spacing as these were different among the GMC Zenith carbs based on application.