10-29-2008, 12:58 PM
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CC Member
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Join Date: Feb 2007
Location: Colorado Springs,
CO
Cobra Make, Engine: Backdraft, supercharged Coyote
Posts: 2,453
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Not Ranked
Quote:
Originally Posted by Alan P.
Bob, thats good information. Your choice for heads is what I need to hear as I had taken for granted that AFR was the head of choice for this project.
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On the net, AFR's are very popular. Lots of people think they're the bees knees. I'v never used them, so I can't say from personal experiance whether they make power or not.
But two pro builders that I trust tell me they would not use them. The casting and design are pretty good. But the valves, springs, and studs are not good. By the time you upgrade all that stuff, you've spent too much money.
I'm using stock out of the box Dart 195 heads on my Dart 427W. All I did was port match them to the intake. It makes 470 on the chassis dyno. Plenty of flow there for a 347.
Gordon Levy is building me a custom set of CNC Brodix heads. With his cam, we expect to be in the 620-650hp range. |
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