[Kenth]

Originally Posted by chrisp

Is this info incorrect ?
https://pontiactripower.com/pages/faq#8
The 59 to 66 tripower end carbs have a 1 3/8"

The answer is yes.
Just made a 1 3/8" steel wire gauge and it did not get pass the venturi, were a 1 5/16" gage did.
Rochester info is correct.