I would like to go to a set of alum. heads, but just don't have the funds for that.
Sounds like i need to stick to my holly carb. is a 850dp a big enough carb, Also thought about a dominator.

What would the heads i have now be worth ? casting # 3964290
They was just gone through at the machine shop about 5 months ago, They have only been run maybe 5 hours tops. and i had o-rings put in them.
If i could get enough out of these heads i might be able to go alum.
I know where i can get a set of canfields with a 310cc runner for 1000.00
bare heads. just don't know what it would cost to get all the machine work done, plus the cost of the parts.