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2014 Tazewell Speedway Limited Late Model Division Rules


Body Rules

Same as Lucas Oil Series

Engine Rules:
Engine *A*
365 CID Max Weight 2275 lbs
Block
OEM Cast Steel Block or Aftermarket cast Steel Block
Max Bore 4.070 (.003 Tolerance)
Crank
Steel Crank Only Balancing ok 3.500 Max Stroke
Pistons
Flat top only, no radius Deck Pistons, Zero Deck Min.
Rods
Steel Rods Only. No Titanium or Aluminum
Oiling
Wet or Dry No Vacuum Pumps
Intake Manifold
Must be cast aluminum. Porting allowed no two piece manifolds
Auxiliary Cooling Lines OK
Heads
Steel Only Heads Must be 23 Deg. Style No raised runners
Angle Milling allowed, minimum valve angle is 22 deg.
Angle plugs are allowed, in stock location
Steel valves only, hollow stem allowed, no titanium
11/32 stem valves, undercut allowed
Max. valve 2.02 int. 1.600 exh.
Max CC on int runner is 205 cc
No minimum or combustion chamber volume
No porting, or polishing is allowed, no shot peening allowed
Valve spring pockets may be machined
Racing style valve job is permitted with no hand blending
Stud mounted rockers with stud girdle or jesel rockers are allowed
CAM
Flat tappet style
Lifters
Flat tappet style only
.842 max diam.
No mushroom lifters, or radius, or ceramic, or roller are allowed
Carb
One 4 barrell 4150 style, No dominators
Gas or E-85
Ignition
No magnetos

Engine *B
365 CID Max Weight 2425 lbs

Block
OEM cast steel block, or aftermarket cast steel block
Max bore 4.070 (.003 tolerance)

Crank
Steel Crank only Balancing OK 3.500 Max stroke

Pistons
Flat top only, no radius deck pistons, zero deck min

Rods
Steel rods only, no titanium or aluminum

Oiling
Wet or dry No vacuum pumps

Intake Manifold
Must be cast aluminum. Porting allowed no two piece manifolds
Auxiliary cooling lines ok

Heads
Steel only Heads must be 23 deg style No raised runners
Angle milling allowed, minimum valve angle is 21 deg
Angle Plugs are allowed, in stock location
11/32 stem valves, undercut allowed
Steel or titanium valves allowed
Max. valve size 2.0555 int. 1.600 Exh
Porting or polishing is allowed
Valve spring pockets may be machined
Racing style valve job is permitted
Stud mounted rockers with stud girdle or jesel rockers are allowed
CAM
Roller of flat tappet is allowed
Lifters
Roller lifters are allowed
.842 max diam.
CARB
One 4 barrell, 4150 style, no dominators
Gas or E-85

ENGINE *C
365 CID Max Weight 2475 lbs
All steel
23 deg style heads No 14 deg. Heads allowed
One 4 barrell 4150 style no dominators

Engine *D
CT525 GM Performance Weight 2425 lbs.
Must have 25 lbs on each side of engine in front of bell housing
All engines must have original chevrolet performance GM seals
Chevrolet performance late model series engine rules will apply www.525superseries.com

Engine *E
602 or 604 GM crate engines
604 GM. 12 in spoiler no weight min.
602 GM. 12 in. spoiler with 12x32 left side spoiler no weight min.
All crate engines must remain stock
Crate engines will be tech as per NESMITH specs

CARB
One four barrell, 4150 style
Gas or E-85 Any carb spacer

Ignition
No magnetos

Tire Rules:
Engines A B C D
Both rear tires must punch 58 before qualifying and feature race.
If you punch less than 58 before qualifying, you will get only one lap to qualify after tire has been changed if time is remaining
No front tire rule
Tires may be checked for chemical soaking
Engine set back will be 6 inches from center of top ball joint to the most forward spark plug
Gas or E-85 fuel allowed. The specific gravity may not exceed .750
Protest fee for fuel check is $50.00
Weight for engine combination your claiming must be posted on right side "A" pillar. Failure to post correct weight will result in disqualification. If no weight is posted, you will have only 1 lap to qualify
No traction control device of any kind
Electronic ignition boxes may be bought for $300.00
Visual protest fee is $75.00 Track retains $25.00
Rod protest fee is $100.00 Track retains $50.00
Engine Protest fee for Engine A B C is $400.00 Track retains $100.00
Engine protest fee for engine D is $100.00 Check bolts and box
Working raceceivers are mandatory

Steel rod verification. Oil pan will be removed or inspection plugs can be installed in oil pan

Time limit on tear down must be done in timely manner. Track officials will monitor this.
If the official declares that has not been done in a timely manner, the official reserves the right to declare disqualification.

The track reserves the right to amend, delete or change rules in the interest of competition.