Hill3

EC4WDA Rules

Most Recent Rules Changes

Pg. 19 #18. Change to: All vehicles must have a diagonal bar from the top of the cage above the occupant (s) head tothe opposite side of the cage at the frame mount. All vehicles that incorporate a funny car style roll cage (multiplehoops tied to the main cage at multiple points) into their drivers compartment rear hoop do not require a diagonalbar (see diagram 8 on attached page). 

​Pg. 32 I. Change to: OEM High Performance engine with production engine components (10.25 to 1compression ratio or higher) must claim
1) OEM Valves .........................................10 …..10
2) OEM Head Castings..............................10 …..10
3) OEM Piston...........................................15 …..15 
​All stock small block Chevrolet heads with OEM 2.02 and 1.60 valves must claim OEM valves andOEM head castings. (OEM pistons must also be claimed if that engine is over 10.25 to 1 compressionratio)

Pg. 51. OEM fuel injection change to: No airflow or volume changes permitted. Fuel control may be changed. Ifairflow is modified, must claim fuel injection not OEM injection. If only throttle body size is changed mustclaim increased throttle body size and OEM injection points.

Pg. 37 C. Change to: Vehicle must meet EC4WDA rules and regulations along with Wheel to Wheel Requirements(D, G, &H). If vehicle has a factory steel driver side door exempt from requirement D.

Pg. 32 delete: H. Connecting Rods (any non-steel rod)…...5….... 5

​Pg. 52 delete: Rods - Any production rod may be used in any engine. No restriction on what you do to a productionrod. (500 minimum vehicle production limit.)

Pg. 44 #5. Change to: The challenging driver must register the complaint with the announcer or any track official incommunication with the announcer, present the challenging fee in CASH, and who they wish to challenge inwriting. Challenging fee shall be $400.00 and will cover a total Tech Committee inspection.

Pg. 31 B. Change to: B. Aftermarket Heads ...................45 ….…20

Pg. 23 optional junior racers- Ages - 5-17 years old NO Driver’s License. 
​ Age 5-11 - 7.00 seconds and slower 
​ Age 6-17 – 6.50 seconds and slower 

PDF of the Rules Changes

COMPLETE RULES BOOK


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