360 to 408

you guys are using the RHS iron heads?

with aluminum heads readily available at a reasonable cost, why not go to a larger aluminum head?

BUDGET!! WE sell them for 1295.00 with 8mm Ferrea 6000 series valves, all machine work done, 2.02x1.60 with the bowls cleaned after the valve job, Comp beehive springs for up to .600 lift!

There is no QUALITY aluminum head that can compete with these heads and they flow 268cfm at .500 lift on my bench and 272 at .550!