Bolw By ???

This means the motors had vacuum in their intakes at wide open throttle which is possible. I was basing my explanation on the carburator being big enough that it would flow more air than the motor. If a motor tries to move more air than the carburator or throttlebody can supply this will create vacuum. A stock eliminator motor can easily move more air than the carburator because you are limited to stock carbs in that class. Nextel Cup cars when they run a restrictor late race have vacuum in the intake because the motor tries to use more air than the restrictor plate allows into the intake. I should have been more specific and not so general on the wide open throttle thing because you can have vacuum at WOT and just stuck with if a motor has zero vacuum in the intake.


Chuck