The holley 500 is way too much for a stock motor - a 32 / 36 dgev weber is 375 cfm. That carb, as you know, is total crap and it will never work right - others have fought with them and got their money back. I have seen people take and modify the intake and run a holley 390 4 bbl carb on a 2.6, but that is really good only for a modded motor.