[Tom Vaught]

Think that would be a good topic at some point down the road Mike.
Agree there are a lot of mods that can really either do nothing or screw up the carb from ever performing well after modifications.

When I first came to Holley in the 70s, I was part of a group that was documenting the mods made by "Modifiers" and sold to the public. So Holley had a bunch of workers at the Engineering Center in Warren, Michigan order carbs from "Modifiers" under their own names and Holley reimbursed the employees for the cost of the purchases. At the end of the Purchasing time-frame, Holley Engineering had about 20 "Modifiers" Carburetors.

So the next step was to take the carbs, AS RECEIVED, and put them on the "Air Boxes" and Check the "Calibrations" on each carb against the 'Holley produced' matching List Number carb from Holley.

After that each carb went on a "small block" Chevy dyno engine (10,000 engine rpm capable water brake dyno) and the two carbs (the "Modified" carb and the "Holley out of the box" carb were tested back to back in all phases of the carburetors operation.

At the end of the testing, THREE "Modifiers" carbs were slightly "Better" vs the "Out of the Box" Holley Carbs. But the $$$ paid for the Modifications vs the $$$ spent vs the Benefits in HP and Torque might make a few people unhappy.

Most of the Modifications was "Smoke and Mirrors" vs real carb improvements.

So I think one out of the 3 Good "Modifiers" is still out there in the carb business.
John Reed, RIP, was one of the 3 modifiers that made an improvement.
Braswell Carbs was another modifier that made an improvement, Braswell is still out there.
Brad Urban, RIP, was the third modifier.

Tom V.

** Quick Fuel was not in the testing, because Marvin & Marty had not left Holley to start QuickFuel Carbs, that happened later on.
Believe Marvin and another gentleman were the Dyno Operators for the testing. That was a long time ago.