2024 Tazewell Speedway Sportsman Division Rules

Body Rule:
Same as Lucas Oil Series
Engine A: Fastrack and Nesmith specs are legal (EXCEPT CARBURETOR)
Must remain stock as they came from GM. Must remain as listed in GM technical manual p.n. 38958668. Fastrack and Nesmith specs are legal. Rebuilt motors are allowed. Do not have to be sealed
Weight: 604- 2300 lbs
602- 2300 lbs
Engine B: 362 max CI
Weight for Engine B is 24000 lbs
Block:
GM Cast Steel Block. No after-market blocks.
One- or two-piece rear seal, no block lighting, no splayed main caps
All Components must remain in stock location
No raised or oversized cam journals
No oversized lifters. (.842)
Max bore 4.065
Stock stroke 3.480

Rods:
Steel Rods - 5.700 Length only
I-Beam Style - 3/8" bolt, press fit pins or floated rods
No titanium or aluminum
Piston Flat Top 2 or 4 valve pocket style

Oiling Systems:
No dry sump
No vacuum pumps
No external pumps

Crankshaft:
Steel stock stroke (3.480)
Min. weight 48lbs. with key & front timing gear
Stock - OEM Journals main (2.448) and rod journal (2.100)
Balancing o.k.

Cam - Lifter:
Hyd Only Max Valve Lift .460" (checked with solid lifter at .00lash)
0.842 lifter diameter only
No mushroom lifter
No ceramic lifter
No roller lifter
Cam bearing journals must be OEM (1.868)
Timing chain only, no gear drive, no belt drive

Heads:
Steel only must be GM head
No after-market heads allowed
Straight plug only
Heads must be 23 deg.
Angle milling allowed, not to exceed 1 deg.
All heads must remain as cast
Standard style conventional valve seals only.
Under cut stems allowed - no hollow stem
Max valve size 2.02/1.60 minimum valve weight 2.02 109 grams 1.60 94 grams
Must remain 11/32 stem diam.
CC limit on intake runner 175max
60cc min.
Limit on combustion chamber
No porting, polishing, grinding excessive deburring in
any breathing area
No shot preening, no media blasting
Heads may be deburred on outside areas only
Valve spring pockets may be machined
Max spring pressure 105 lbs seat-260 lbs open
Multi-Angle valve job permitted machine cut only
Max .900 below seat measurement to start at bottom of second angle or 45 degrees
No hand blending allowed
All angles must remain concentric with valve guide
May be machine for push rod clearance
No shaft style rockers, stud style only
No raised runners
Intake Manifold:
Intake must be cast aluminum
Porting or polishing not allowed
Two piece manifolds not allowed
Intake manifold must be cast with no spacer plates between the head and the manifold itself. No fabricated intakes.
One intake gasket only, .120 thick.
If a cylinder head appears to have evidence of grinding, blending, or other forms of port work performed, Tazewell Speedway officials can hold the cylinder head to complete further testing, or call the head illegal based on the discretion of tech officials.

Carburetor:
ENGINE A OR B
One 4-barrel 4150 style, gas or E-85.

Distributor:
Any ignition
No magnetos
No traction control
No crank triggers
Electronic boxes buy rule $300

Headers:
No "Tri-y" style allowed. All headers must be standard 4 into 1 style. No stainless headers.
Headers buy rule $300

General:
All pumps and pulleys must be mounted in the standard location on the engine.

No bell housing mounted pulleys. No electric fans.

No adjustable suspension devices mounted in the driver's compartment. Brake adjusters are permitted.

Shocks: Oil or gas, must be non-adjustable, no external reservoirs permitted, shocks may be steel or aluminum. Any shock may be claimed for $175 coil over kit not included.
Shock and spring must be mounted as one unit in a traditional coil-over form, cannot separate shock and spring. No sliders or coil-over eliminators.

One spring, one shock per corner.

Drive shaft must be painted white, steel drive shaft permitted, carbon fiber also permitted with weight penalty of 30 pounds, and it must be added in front of the bell housing. Aluminum drive shaft permitted with 20 lbs. added to total weight and mounted in front of bell housing.

Standard steel axles only, no titanium axles. Axles may be solid, or gun drilled.

Hubs must be standard style aluminum or steel. No lightweight hubs. No magnesium or liquid filled hubs permitted.

Brake rotors must be steel. No lightened or cut rotors. Brake rotors can be solid or drilled.

All suspension components must be made of steel or aluminum, no titanium parts

Standard slip yoke transmission only. No ball-spline transmissions. Transmissions
must be aluminum or steel, no magnesium transmissions. Reverse starter mount bell housings permitted, steel or aluminum only

Cars finishing within the top 5 may claim a "shock trade" for $75. The shocks must be from that night's feature race and be the same corner of the car. For example, left front for left front and $75 for the swap.

Any shock on the car must be able to be fully compressed or extended by hand when the spring is removed. No bump springs of any type. Any shock claimed or "traded" will include the bump stop if it is present on the shock shaft.

No "spring rods" or any other type of suspension component that can change lengths while racing, other than the 5 legal shocks and springs. No shocks described as "inerters."

The track reserves the right to claim shocks at any time. In this case the driver's money will be held until the shock can be further inspected. If the shock is found to be illegal, severe penalties will be assessed at the track's discretion.
No spring sliders or coil over eliminators permitted.

**Tire rules may be modified by officials in the spirit of competition, supply chain issues, or manufacturer changes.
REAR TIRES: Both sides must punch 53 before qualifying and feature race. No tolerance.
If you punch less than 53 before qualifying, you will only have 1 lap to qualify. If a tire does not punch 53 before the feature, you will go to the rear after tire change.
Front Tires Open
Grooving / Sipping allowed
Tire may be checked for chemical soaking. Protest fee is $150.
Random samples may be taken and sent to a lab for testing. If samples are collected, winnings will be held until test results come back from lab.
If lab results prove tires to be illegal, you will be disqualified. There will be a $300 fine before you race again at Tazewell Speedway.


FUEL BURN OFF
1lb per lap with 10lb total tolerance allowed.

General Rules:
1. Tires must have all numbers and name on the tire. No grinding off numbers or names. Anytime this is altered, will be illegal.
2. Engine set back will be 6 inches from center of top ball joint to the most forward spark plug
3. Track reserves the right to delete, change or amend rules in the interest
of competition
4. Any gasoline will be allowed. No alcohol. E 85 gasoline will be allowed. The specific gravity may not exceed .750 Protest fee will be $50
5. Weight must be posted on right side A pillar
If weight is not posted, you will only have 1 qualify lap
Failure to post correct weight will result in disqualification
No driver will be eligible to compete in the sportsman class if they have won a limited, Crate Late Model, or super late model event in the past 3 years at Tazewell Speedway. A driver is allowed to race in more than 1 class on the same night with different cars but must purchase an armband for each class.
Time limit on tear down must be done in a timely manner. Track official will monitor this. If the official declares that this has not been done in a timely manner, the track official reserves the right to declare disqualification
The track reserves the right to amend, delete or change rules in the interest of competition.