Knoxville Changes Sprint-Car Rules
KNOXVILLE, Iowa — Knoxville Raceway officials announced several upcoming changes to the rule book for the 2011 season.
Most notably was the addition of 25 pounds to the minimum weight limit in the 410 sprint-car class. In addition to being part of the World of Outlaw’s 2011 rules, it was felt this was a good move to further encourage safer materials and parts in the cars. It was felt that the increase would not be an inconvenience to most of the cars running the Knoxville Championship Cup Series.
The second item on the agenda was the addition of the standards for the LS sprint engine and allowing it to run at all 2011 events at Knoxville Raceway including the Knoxville Nationals.
The rules will be pretty much standard with the existing LS packages that utilize the 427 LS engine. They will be posted on the Knoxville Raceway website as soon as a few rules are finalized concerning fuel delivery and the different choices that are available.
Also additional intake stack restrictions are being added to the Knoxville “Open” engine. Any engines 430 cubic inches or bigger will be further restricted to a 2 ½-inch stack.
Engines under 430 c.i. may still use the 2 5/8-inch stack. All other rules apply to the “Open” engine platform as written. At this time the Knoxville “Open” engine will not be allowed to compete at the 2011 World of Outlaw events or the 2011 Knoxville Nationals.
“Hopefully we can further study this engine weekly and it will be able to be accepted for all Knoxville Raceway shows in 2012,” said Knoxville Raceway Competition Director John McCoy. “These governed engines either by air intake or internal parts are still considered to be important to the continued health of the sport by Knoxville officials.”
There were no changes in the 360 rules.
In the 305 class, Knoxville Officials have expressed an interest in using a stock intake gasket to further regulate the intake port.