Hickory Motor Speedway Rules Addendums

1-23-15 Rule Addendum :

2015 Truck Rules

SUSPENSION

All downward chassis movement while the race car is in competition must be limited only by the normal increasing stiffness of the springs, the bottoming of the coil spring, or of the chassis against the race track whichever occurs first. Taping of the coil springs will not be required. Any travel limiting device or procedure that in the judgment of Track Officials attempts to detract from or compromise the above will not be permitted. Track officials will determine the method of enforcing this rule.

1. May be coil over, leaf, three link, coil, or truck arm on rear suspension.  No rear sway bars allowed.  

2. Screw jacks allowed.

3. No remote weight jacking devices allowed.

2015 Late Model Stock Rules

Approved Engines

1. “Built” engine as per 2015 NASCAR rulebook

Carburetors allowed are the Holley 500 HP Series part #080583-1 and the Holley 500CFM Ultra HP and XP 2BBL aluminum body carburetor part numbers 4412HB, 4412HBX, 4412BK and 4412BKX.

Late Model Stock Cars with built engines will be allowed to run the Holley 500 HP Series part # 080583-1 carburetor. This carburetor must remain as manufactured. The only changes allowed will be to change jets, power valve , and the screw in air bleeds in the top of the carburetor.   See NASCAR rulebook.

The choke horn may be removed. If the choke horn is removed it must be flush cut with the air cleaner ring. The air cleaner ring must not be altered and remain as manufactured.

Also approved for built engines is the Holley 500CFM Ultra HP and XP 2BBL aluminum body carburetors. The approved part numbers are 4412GB and 4412HBX (Hard Core™ Gray), 4412BK and 4412BKX (Tumble polished aluminum with Black™ Metering block & baseplate).  These carburetors must remain as manufactured. The only changes allowed will be to change jets, power valve, screw in air bleeds in the main body, and screw in emulsion bleeds in the metering block. See NASCAR rulebook.

2015 Limited Late Model Rules

Hickory little motor

  1. Must be standard factory production engine.
  2. Maximum cubic inch displacement: General Motors – 350 cubic inch plus maximum 0.060 inch overbore. Ford – 351 cubic inch plus maximum 0.050 overbore. Dodge- 360 cubic inch plus maximum 0.035 overbore.
  3. OEM crankshaft only.
  4. Stock stroke only.
  5. No deburring or polishing of crankshaft.
  6. Balancing only.
  7. Stock, standard balancer only.
  8. 600 gram piston/pin combo minimum.
  9. 500 gram piston/pin  add 50 lbs, 25 on each side.
  10. 5.7 length rod Chevrolet, 6.0 length in Ford Chrysler.
  11. Heads must be standard production.  Chevrolet must be straight plug.  Maximum valve size intake 2.02, exhaust 1.60.  Ford/Chrysler same as LMSC.
  12. No Titanium valves or parts
  13. Heads minimum  62cc .
  14. Intake Chevrolet Edelbrock #2101, #2116, or GM casting number 12464340.
  15. Ford Windsor Edelbrock # M9424-C358
  16. Holley 350 2BBL as per LMSC (2006)
  17. Cams may be solid or hydraulic but must have a maximum valve lift of no more than .475 measured at the valve retainer as engine was raced.  No roller cams.
  18. Roller rockers may be used.
  19. Headers may be used.  LMSC (2015) type only.
  20. Exhaust pipes must be as LMSC (2015).
  21. HEI or MSD ignition allowed.  No magnetos.
  22. 7 ¼” or 5 ½” clutch allowed.  Steel flywheel only.

2015 Street Stock Tire Rules

1) All Street Stocks will be competing on the Goodyear D-2902 tire purchased from Hickory Motor Speedway and documented by the track.

2)All Street Stock Competitors will choose one of the options listed below for their first event of the season.

* Competitors will have the option to buy 1 (one) Goodyear D-2902 sticker and 4 (four) Goodyear D-2902 scuffs. (5th tire will be their documented spare for the event)

* Competitors will have the option to buy 5 (five) Goodyear D-2902 scuffs. (5th tire will be their documented spare for the event)

* Competitors will have the option to buy 4 (four) Goodyear D-2902 scuffs and elect to not have a spare for the event.

3) After each event Competitors will return any tires which they may choose to use for the next event. Tires to be discarded and replaced should be clearly marked and a sticker size requested ( if applicable ) at the tire store. These tires will be impounded at the Hickory Motor Speedway tire store and will be available for the next event.


4) All Street Stock Competitors may choose to use tires that were purchased and impounded from the previous event for their next event and/or other events for the remainder of the season or choose one of the options below.

* Competitors will have the option to buy 1 (one) Goodyear D-2902 sticker and a maximum of 4 (four) Goodyear D-2902 scuffs. (5th tire will again be their documented spare for the event)

* Competitors will have the option to buy 5 (five) Goodyear D-2902 scuffs. (5th tire will again be their documented spare for the event)

*Competitors will have the option to buy 4 (four) Goodyear D-2902 scuffs and elect to not have a spare for the event.

D-2902 Stickers 80.00 each (includes all mounting, tax, and disposal fees)

D-2902 Scuffs 25.00 each (includes all mounting, tax, and disposal fees)

*Competitors should bring their wheels to be mounted/impounded during the week prior to their next event to make sure they will be available upon entrance to the pits*