Budget SBC upgrade

[64Chevelle]

Hi,

I'm considering a budget SBC upgrade from the dull bone stock goodwrench 350 currently in the car.



- 64 Buick Skylark cab, weighing 1610kg/3550lbs.
- Summit brand LT headers with 2 1/2" exhaust with flowmasters
- Edelbrock performer intake and 650 cfm Edelbrock carb
- TH400 with stock stall speed converter 1500-2000 range?
- Stock 8.2" non-posi 10 bolt rear, probably 2.73:1 gears

The engine is rated at ~200hp, can I bring it up to ~350hp with a heads/cam package? What else should be done? It's mostly a cruiser/beater so fuel economy is somewhat important as well. I'd rather have 300hp with great low end torque than 350hp but inefficient and worse low end torque.

I've been looking at the GM vortec heads, but there seems to be a lot of additional costs involved so the trick flow heads might be a better choice:

Vortec vs Trick flow
Chevy High Performance goodwrench upgrade article