Nitrous Tuning Tactics
If you're looking for something special in the way of heads for your small-block Chevy, these CNC-ported AFRs are a bargain. They feature lightweight valves, ultra-high resonant frequency springs, and exhaust ports that set an industry standard. At a typical street lift of .550 inch, the exhaust ports flow 234 cfm. Our dyno tests have shown good results both off and on the bottle.
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