3/12/2016
Grays Harbor Raceway
Updated Street Stock Head Rule
The following head rule will apply for the Grays Harbor Raceway Street Stock class for the 2016 season. This is found under the 'Engine Packages' paragraph 2 and 2.1.
Stock steel OEM Block, Stock steel OEM heads, Factory stock or OEM replacement parts, no alterations to ports. Oversized valves, guide plates, roller rockers and screw in studs are allowed. No high performance or aftermarket blocks or heads allowed except for the following:
Chevrolet motors will be allowed to use a Dart steel head with a maximum intake port volume of 200cc. Ford motors may use a steel head with a maximum intake port volume of 208cc. NO PORTING OR POLISHING OR ALTERING INTAKE OR EXHAUST PORTS/RUNNERS.
Submitted By: Steve Beitler
