4bbl running rich.

Give us more detail about the engine. First off, you cannot "punch" (bore) a 340 to 413. There has to be some stroke (longer throw crankshaft) involved, too. Details. KNOWN and MEASURED static compression ratio. Not JUST "oh it's got 10:1 pistons". Camshaft specs. Not just "decent cam I could look the specs up I guess". Solid or hydraulic? Roller or flat tappet? Type of ignition. How much initial and total timing? Intake manifold type? Cylinder heads? Ported or not? What exhaust? Headers? What size tubes? Manifolds? My GOD. You want help or not?