engine combination

I agree with that's there more in your combo with some work. However if you are wanting to go faster then go ahead with your planned upgrades.

If I were in your shoes and were stepping up the first thing I'd do would be measure the piston to deck height and cc the piston so I would know exactly what chamber volume I needed to get the compression ratio needed. Personally I'd want 10.8-11.0 to 1, that cam in a 9.0 or 9.5-1 engine is a recipe for disappointment. Plan on buying or having you converter re stalled

I ran a similar built 340 several years ago. The cam was a Hughes hydraulic flat tappet with almost identical specs. Ported Edelbrocks, 11.4-1, Weiand X-Cellerator, Quick Fuel 750, TTI 1 5/8- 1 3/4 step headers, 727 with a 9.5" converter that flashed 5000. The car ran pretty much the same with 3.91s or 4.30. It ran 7.24 in the 1/8 and 11.61 in the 1/4 at 3240# on pump 93 with a mechanical fuel pump and factory 5/16 fuel lines. I'm sure the 1/4 mile numbers would've been better with a decent fuel system. It would 60' in the low 1.50s.