Hickory Motor Speedway Rules Addendums

2012 Late Model Stock Car GM 604 Crate Motor Rules Addendum: Revised 1-26-2012

GM 604 Crate Motors may run any 1.5 or 1.6 aluminum self-aligning rocker arms with 3/8'' stud . A combination of 1.5 and 1.6 rocker arms is approved, however, 1.6 rockers must be on the intake valves with 1.5 rockers on the exhaust valves.

GM 604 Crate Motors may use aftermarket retainers, keepers, locators/spacers, but all parts must be magnetic steel. No shims will be permitted with aftermarket locators.

GM 604 valve springs must remain as specified in the GM Performance Parts Circle Track Engine Technical Manual. (No Aftermarket Springs)

Effective August 6 th 2011

2011 Street Stock Addendum Rules

All cars frame height must be a minimum of five (5) inches.

Metric cars will be measured at the sub frame.

Leaf spring cars will be measured at the rocker panel.

March 8 th 2010

All Divisions:

Any device or method for limiting the normal movement of the front or rear suspension will not be allowed. This includes but is not limited to coil binding and sway bar stops. The Tech Director's decision will be final. No protests will be allowed on this rule.

March 22 nd 2010

All Divisions:

All 4 brakes must be operative at all times.