[Tom Vaught]

Ah, I see where you are coming from BUT.

If you have a DZ carb a L78 Carb, or a CJ carb and a customer is paying big bucks for a totally correct carb, WHY would you modify the carb and put in a 2000 MY+ idle circuit when the carb to be correct needs to have the Original Lower IFR restriction position?

If you truly have too large of a IFR hole you drill out the existing hole in the metering block and press in new IFR inserts and then drill them to the correct Holley specified size that the carb came with. Before the butchers modified it.

Your post makes absolutely no sense from a restoration point of view.

If you are restoring a 1969 DZ carb you don't go by what people are doing 40+ years later. You restore it to how it was build in 1969. Course that assumes that you have the proper build info and not some magazine article from 2010 to go by.

And you sure as hell do not tell them that "it is all correct" with the changes you made to the carb. That is fraud.

Tom V.

You have made some "interesting posts" over the years but this one really surprises me.
I restored the Rochester carbs on the 65 GTO in the Henry Ford Museum and I put the carbs back to exact Rochester Specifications.
I did not make Changes and then call the carbs all correct (like the original guy did who sold them the car).