349 CI on the cheap

64,
You really need more than a 600 cfm carb to supply the engine, I don't run less than a 750 VS carb on the street. The TQ were 800 cfm's so why would anyone want to run less of a carb?

Also too you hurt the performance on the 318 by using the 360 heads, the engine would make more power and respond better with a good set of 318 heads with the same work done to them.