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The reasons a single mixer will only support around 325 hp are the amount of air it will flow and the matching amount of BTU's of energy producing fuel it will flow and keep the air/fuel ratio correct.The restrictor plate engines in NASCAR are running in the range of 16 to 1 compression and some very strange cam profiles to make the power they produce and are very close to the edge of destruction at all times.
The reasons a single mixer will only support around 325 hp are the amount of air it will flow and the matching amount of BTU's of energy producing fuel it will flow and keep the air/fuel ratio correct.
The restrictor plate engines in NASCAR are running in the range of 16 to 1 compression and some very strange cam profiles to make the power they produce and are very close to the edge of destruction at all times.