Calling 340 with Holley 650 dp

340inabbody said

Thank you. Hard for me to tell. Initially I thought that but they are not sooty more like scorched but I am no expert at all. Still learning.

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Read the rest, but lets go over a few things like have you checked the vacuum at idle ? That carb comes with a 6.5 power valve. May need a higher rated 8.5
But 1st ...what's the timing initial and full advance?