Big Block Cylinder Heads "915 vs 906"

80fbody said
Wow, I'm working on a 451 now for a really light dart. Was told it should be under 2500lbs with BB. I've got some 346 heads that were home ported years ago then sat on the shelf till now. What's it cost to get a set to flow well & including installing larger valves? I think it would be great to knock out some really low 10's with a stock crank, rods & iron heads. Thoughts?

It is not worth porting iron heads for really big horsepower unless you must use the iron heads because of the rules. In your case, if you can get the car to 2500lbs, the 346 headwork w/valves would cost about $1500. If the rest of the engine is right they could get you 620+hp. But we're really behind right now, ask the overly patient SGBARRACUDA.