Crankcase Windage Tray Made Optional for NASCAR-Approved Spec Engine

Effective August 12, 2011, amendments to the 2011 rule books for the NASCAR K&N Pro Series, NASCAR Canadian Tire Series, NASCAR Whelen Modified Tour, and the NASCAR Whelen Southern Modified Tour stateĀ “the use of the crankcase windage tray supplied by the NASCAR-Approved supplier is optional. If used, it must remain as supplied from the NASCAR-Approved supplier with no modifications”.