Comp Cams ex275xl question

MomsDuster said

It also seems to have a lite exhaust pop at cruise but not like a miss, nothing you can feel, just hear. Step on or lift the throttle slightly and it’s gone. More characteristics of the cam? Or possibly just a tuning issue.

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That would most likely be a slightly lean condition in that cylinder. Intake manifolds seldom have good fuel distribution. What intake & is it a Holley or Carter? It is possible you could stager jet the carb so it feeds that cylinders runner a hair richer to solve the popping issue.