Sick Six

I rebuilt my ’70 T/A’s 340 Six-Pack engine a while ago, and it’s never run right. Everything is stock, except the cam is a purple shaft 0.484˝/284°. I've put about 2000 unhappy miles on the thing thus far. The carbs were rebuilt, but the
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Port Power

I would like to know if there will be any benefit to port matching my headers to the exhaust ports of my ’73 Challenger’s 360? There is a big stepup. Here’s the engine specs: fresh mild 360 with Erson Hi Flo cam (2700‑5800) and heavier
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