Originally Posted by coloradoracerguy

Running the breather hoses to the air cleaner will do nothing. The factory did that for two reasons. One, to make sure any air drawn into the crankcase was filtered, and any blowby that the pcv could not ingest would be ingested by the motor at the entry to the carb. In a performance or race application, it's basically useless. If you need to pull a slight vacuum in the crankcase to help with ring seal, make sure you have backfire valves on the headers and run the tubes from the valve covers to the collectors. If there is an exhaust system after the headers however, don't even bother as the backpressure will defeat the purpose of the vent system.

Is this a race only or street/strip deal?