STOCK 14 AND UNDER
1. Stock means stock.
2. Once class of assocation stock tractors.
3. Single cylinder engine up to 14hp.
4. Weight is 950lb, with driver. Weights to be secured to tractor.
5. Hitch height is 10".
6. Tires no larger than 23 x 10.5 x 12. No cepeks or pitbulls.
7. All safety requirements are enforced.
8. Must have all OEM parts, no aftermarket.
9. Fuel is restricted to gasoline or diesel, no additives. Tank must be in stock position.
10. Frame must be stock with no alterations and no front weight extentions.
11. Must have deadman's throttle.
12. Carburetor must be all stock with no air cleaner. No extentions or velocity stacks.
13. Bore is .030 with wear, stock stroke and stock head.
14. Exhaust may be straight pipe or stock.
15. Clutch and driveline may be altered to prevent breakage.
16. 56" wheel base.
17. 3/4" hitch mesh.
STOCK 14 AND OVER
This class will be the same as the "Stock 14 and Under" with these exceptions:
1. Single cylinder engine 14hp and over.
2. Weight is 1050lb with driver. Weights to be secured to tractor.
3. Hitch height is 13".
4. Tires no larger than 26 x 12 x 12. No cepeks or pitbulls.
STOCK ALTERED
1. One class of stock altered.
2. Single cylinder up to 12hp.
3. Weight is 950lb with driver.
4. Hitch height is 10".
5. Maximum tire size is 23 x 10.5 x 12. Cutting is allowed.
6. All safety regulations apply.
7. Frame remains stock but front wheels may be moved. May use front weights.
8. Carburetor must be stock appearing with a maximum 1.200 ventura, mounted to block. No extentions.
9. Fuel is gasoline and deisel only. Mixing is allowed (no nitrous oxide).
10. Bore maximum of .040, including wear.
11. Stock stroke at .020 wear.
12. Valves: Head must be strapped. Maximum size for intake is .200 over stock, Exhaust .375 over stock.
13. Heat must be stock appearing, but may be modified.
14. After market parts allowed, (cam, valves, rod, inserts, etc.)
15. Porting and polishing is allowed.
16. Stock form of ignition.
17. 3/4" hitch mesh.
30 CUBIC INCH
1. Single cylinder engine up to 12hp.
2. Wight is 950lb with driver.
3. Hitch height is 13".
4. Maximum tire size is 26 x 12 x 12. Cutting is allowed.
5. All safety requirments apply.
6. Frame stock length, front wheels movable. any part of the tractor not to exceed 8' from center of rear axle.
7. Tractors must use steel flywheel.
8. Open carburation.
9. Fuel: Gas or alcohol. No nitrous or injection systems.
10. Valve: No limitations. Head must be strapped.
11. 3/4" hitch mesh.
SUPER STOCK 16
Same as "30 Cubic Inch" class with these exceptions:
1. Single cylinder engine up to 16hp.
2. Weight is 1050lb with driver.
3. Carburetor must be stock appearing with maximum ventura of 1.200.
4. Bore is limited to .080 with wear.
5. Stock stroke at .020 wear.
MODIFIED
Same as "Super Stock 16" with tese exceptions:
1. Single cylinder engine up to 16hp naturally aspirated four cycle engine with a maximum 50.5 cubic inch limit.
2. No injectors, blowers or turbo chargers allowed.
3. Carburation is open.
4. No limitations on valves.
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