bopp - That's disgusting QC. I've got one better. I bought two new HP 830 marine carbs for my 502s. Breaking in the engines on the dyno they wouldn't run worth a you know what. Holley said jet them up, jet them down, didn't help. Couldn't be the brand new carbs were defective could it?! Switched to the old faithful dyno carb 750 and picked up 50 HP. When I sent the fuel flow figures to Holley they admitted that both carbs must be defective!! This BS and searching for every other possibility other than the new carbs cost me a day of dyno time. I sent them back to the supplier and ordered #9022 800s, the regular marine carb. They worked fine.

yea Ive seen some real junk from holley lately, thats why I love my old late 60's 3310's. They were built for GM's 450 hp corvette's