Tazewell Speedway Sportsman Division Rules
Same as Lucas Oil Series
A: 604 or 602 GM Crate
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- 2350
602- 2250 lbs
B: 362 max CI
Weight for Engine B is 2400 lbs
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 over sized lifters. (.842)
Stock stroke 3.480
Steel Rods - 5.700
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
No dry sump
No vacuum pumps
No external pumps
Steel stock stroke (3.480)
Min. weight 48lbs.
with key & front timing gear
Stock - OEM Journals main (2.448) and rod
Cam - Lifter:
Max Valve Lift .460" (checked with solid lifter at .00lash)
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
Steel only must be GM head
market heads allowed
Straight plug only
Heads must be 23 deg.
milling allowed, not to exceed 1 deg.
All heads must remain as cast
valves only no titanium or other materials
Under cut stems allowed - no hollow
Max valve size 2.02/1.60 minimum valve weight 2.02 109 grams 1.60 94
Must remain 11/32 stem diam.
CC limit on intake runner 175max
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 .600 below seat
No hand blending allowed
angles must remain concentric with valve guide
May be machine for push rod
No shaft style rockers, stud style only
No raised runners
Intake must be cast aluminum
Porting or polishing not
Two piece manifolds not allowed
carburetor measurement for any all engines is a 650 (1.25). A maximum of 1.312
or minus 8 thousandths tolerance will be allowed through the 2014 season with
a 30 pound penalty. This will apply to any car regardless of the engine type.
Any car using the 1.25 650 will not have to add the 30 lb.
buy rule $500
Gas or E85
No traction control
No crank triggers
buy rule $300
No "Tri-y" style allowed.
All headers must be standard 4 into 1 style. No stainless headers.
buy rule $300
All pumps and pulleys must be mounted in the standard location
on the engine.
No bell housing mounted pulleys. No electric fans.
suspension devices mounted in the driver's compartment. Brake adjusters are permitted.
Shocks 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.
Steel drive shafts only, must be painted white
Standard steel axles only,
no titanium axles. Axles may be solid or gun drilled.
Hubs must be standard
style aluminum or steel. No light weight hubs. No magnesium or liquid filled hubs
Brake rotors must be steel. No lightened or cut rotors. Brake rotors
can be solid or drilled. Rotors must be 1.25 inch thick, unless using stock style
GM brakes. No . 810 rotors.
All suspension components must be made of steel
or aluminum, no titanium parts
Standard slip yoke transmission only. No ball-spline
must be aluminum or steel, no magnesium transmissions.
Reverse starter mount bell housings permitted, steel or aluminum only
Both rear tires must punch 58 before qualifying and feature race.
If you punch less than 58 before qualifying, you will only have
1 lap to qualify.
No front tire rule
Tire may be checked for chemical
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.
being a new class, we will make weight adjustments if needed to equal the competition
1.Tires must have all numbers and name on the tire. No grinding
off numbers or names. Anytime this is altered, will be illegal.
set back will be 6 inches from center of top ball joint to the most forward spark
3. Track reserves the right to delete, change or amend rules in the interest
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
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
No driver will be eligible to compete in the sportsman class
if they have won a limited or super late model event in the past 3 years at any
track. Also, no driver will be allowed to compete in both the limited late model
or sportsman events on the same night.
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
track reserves the right to amend, delete or change rules in the interest of competition.