I put together a 427 for my 65 chevy truck. At idel the exhust sound out of the right bank has a little popping sound compared the the left side?
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I put together a 427 for my 65 chevy truck. At idel the exhust sound out of the right bank has a little popping sound compared the the left side?
Alittle tight exhaust lash.
Can you share a little more about your build? What's your exhaust configuration? Crossover pipe or none? What's your advance at idle? Idle mixture set right, to the best vacuum assuming you're running a carb or carbs? How do your plugs look - consistent color on all or maybe one that's different? Gary may well be right on an exhaust valve being open a tad, but if you give more details, including what you've done so far someone may home in on the root cause if it's not valve lash.
exhaust leak
Sure enough Richard.Sometimes it the stuff right in front of you.