closed chamber vs open chamber

tooslow said

I just purchased 440 Source heads for $1064.93 to my door.Nice folks on the phone, surprised I usually do not expect customer service these days
I was going the 516 route but by the time I gave them a clean up, checked them for cracks, seats, milled them, valves?? I was to close to the 440 stealth heads in cost plus I am shaving 50lbs,
. I am going to shave them .025 to get my Compression up a full point and swap over my springs, new locks and retainers

Thanks for your help

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That's where I am if I continue my Coronet project. I think I will come out a little further ahead than you on price, as I have the larger valves already. The guides in my heads are great. The intake seats are great. All I would have is the cost of boring the exhaust seats to the 1.74 size, the valve job and then porting. Still will be close to the 440 Source heads, so I am holding off. It's just really not economical to do head work to cast iron. I have nothing against the 440 Source, but I think if I am able to do this project I am going to hold out for Edelbrocks.