[FredG]

Tuning and setting up a carb is a diminishing skill. I am 69. I grew up working on them, especially Holleys. If you are unfamiliar with setting up and maintaining a carburetor, fuel injection is the way to go. My 2014 Backdraft has a Roush 427R and an 870 Holley. Jets are 78/82 P/S. I thought it was too much carburation when I got it from the original owner but Roush told me otherwise. It was the way they designed it. Strong, noticeable gas smell especially when sitting ...ran a little rich, some black smoke. I have seen it before. Turns out it was nothing more than a carb that needed a good adjustment and cleaning including the air bleeds. All probably caused by the bad gas that was run through it for years. There are plenty of threads about it on here or the Holley forum. Only change I made was to remove the original vacuum secondary pot and install a Quick Fuel one. Car runs like a champ. No gas smell.