What do ya'll think of these "fast burn" heads? GM seems pretty impressed with them, but I think we know that if all manufacturers claims actually panned out, you could build a 600hp small block with a few $30 bolt-ons. Is anyone using these heads? Does anyone know how they compare to the more popular aftermarket heads like TFS, Edelbrock Performer, and Sportsman II? particularly for a larger displacement small block? Thanks in advance for any info.

Will

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86 Trans Am WS6

It takes some ***** to do your quarter-miling on foot.
Recent ET's:
@Atlanta 50.80
@Southeastern 50.62
@Mtn Laurel 50.04
Future mods: More endurance workouts and some 300 meter repeats. Projected E.T., 49.8