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I rarely post in the race forum but I think this the best place for this one...

I think I have a fuel starvation issue. I am running a carter M6903 with 3/8 fuel line through a 40 micron Russell in line filter from on my 500 inch stroker motor. Stock style fuel tank and pickup. Carb is a Quickfuel 830. It pulls fine up until about 4000 RPM and then it falls flat and bogs down completely until I let off the throttle.
Like I said I think it’s a fuel issue but maybe I’m wrong. If it is a fuel issue where do I start troubleshooting? How do I check a mechanical pump? I don’t have a fuel pressure gauge in the car, just one on the carb.

Thanks
Ken

Sure sounds like a fuel delivery problem. in my humble opinion everything you have is way to small for a 500 inch motor. you also might have another self-inflicted problem. If I were you, I would cut open my oil filter, and get a magnifying glass, and look in the pleats for brass. If it is there, time to put new bearings in it. Inadequate fuel delivery will cause a lean condition, which can take out bearings. not saying that it has happened yet, just saying you should look at it.