2019 LIGHTNING LATE MODEL RULES
1. Weight -Any motor, 2350 pounds after race
2. All dimensions-see diagram.
CHASSIS AND SUSPENSION:
1. Engine setback- 6" maximum, measured #1 spark plug to top center ball joint.
2. Rear of car may be open.
3. 76" maximum width on body. 1" tolerance.
4. 101" minimum wheel base.
5. 8" rear spoiler, 38" from ground to deck with a 1" tolerance measured at middle of car.
6. No part of body may extend beyond the plane established by the 76" width.
7. Rear bumper may not extend over ½ width of rear tire on each side. Ends must be capped and should be angled so as to not be a puncture danger in the event of a wreck. May be curved inside rear quarter panels at 90 degree angle.
8. Front push bars allowed, may not exceed width of front chassis rail.
9. Suspension- OPEN- ANY TYPE, see shock rules. No stacker springs allowed.
10. Front and rear wrecker pick ups are MANDATORY
11. No part of frame may be aluminum or titanium.
12. J bars only allowed
13. No hydraulic or remotely adjustable 4 link bars allowed
14. Chassis to be tube type only. No factory “clips.”
Pro Shock WB74 or WB75 on front
Pro Shock WB94 or WB95 on rear
Pro Shock WB74 only for 5th
Shock claim rule is $100 per shock
No bump stops permitted
Only one shock per wheel and no phony shocks
Shocks will have factory applied tracking numbers applied
The shocks can be purchased at Fatbacks Race Parts, Heintz Performance Parts. and SRI Dirt and Drag in Denver, NC.
1. Cubic inch- 365 cubic inch max. NO TOLERANCE.
2. Block- ANY CAST IRON.
3. Crankshaft– 48 lbs. minimum
4. Rods- Any Steel
5. Pistons– Any Flat top only
7. Heads– Cast iron (230 runner maximun) or Chevy 604 aluminum heads. Port and Polish OK.
8. Valves-stainless steel only, no titanium
9. Lube Systems– wet sump only
10. Intake- ANY
11. Exhaust System- ANY
12. Engine protest will be accepted on block, crank, cams, pistons, cubic inch, carb, and valves.
LS Engine 5.3 "The Mighty Mouse"
The 5.3 engine comes from factory at 325 cubic inch. We are allowing .60 over bore. Maximum cubic inch is 335
Block: Cast iron 5.3 only
Heads: Factory GM casting numbers 706 and 862. Valve sizes intake 2.000. Exaust valve 1.551 Maximum. Intake valve part numbers V3452 or V3466. Exaust valve part number V4371. No porting or polishing of any kind to ports or combustion chamber. 58 cc mimimum.
Rods: Must be factory stock rods only. Part numbers 143 or 3847. No lightning. You may balance new rod bolts, resize, and float the wrist pins. Stock length only.
Piston: Part number P5036 silvolite. You may zero deck the block, no tolerance.
Camshaft: Part number EL5.3LSX. This cam is a hydraulic roller lifer cam. Lifters Part number 2281. Must be stock hydraulic roller lifters only. The camshaft must be purchased from Concord Engines 704-273-2453 (Ask for Tony)
Crankshaft: Part number 216. This is a stock production crankshaft. No lightning or cutting. Balance ok.
Intake: Part number 300-132 Holly Intake. No porting or polishing of any kind.
MSD Ignition Box: Part number 6014
Carburetor: 4777 Holly 650
The motor mounts, coupler, headers and all the accessories will be available at Heintz Performance.
Engine Protest: Top end $300. Consists of heads, cubic inch, lifters and intake . Complete motor protest- $900. This will consist of checking everything on motor, including all part numbers.
This engine will have a motor buy rule of $4000. It's $3500 for the engine, and $500 for the core. The will be the complete long block minus the accessories.
Fords and Chevy's can run a one stage pump, but cannot have a tank. Lines have to be short and close to motor. May have a remote filter in return line. If there is a tank mounted on your car, you will be DQ'ed! This is not a dry sump setup!
1. Fuel- gasoline ONLY. No performance additives allowed.
2. Carburetor– Box stock Holley 4777C. Choke flap may be removed. No 4 corner idle. Will be
checked regularly and have a $500 claim rule. Jet changes allowed.
3. Fuel Pump- any mechanical, NO ELECTRIC.
4. Fuel cells MANDATORY (mounted in metal cans)
Any type may be used. No traction control allowed.
1. Clutch assembly- ANY
2. Flywheel- ANY must have scatter shield
3. Transmission- ANY, must have working reverse.
4. Drive shaft- ANY must have hangers
5. Rear End- ANY
6. Must have operational 4 wheel braking system. Proportioning and RF brake shut off valve permitted.
TIRES AND WHEELS:
American Racer PRO-2 ONLY
48. Tires must punch 48 or better when hot. Grooving and siping are not allowed. Tires must match the benchmark sample at the independent laboratory. No tire enhancers allowed. Steel or aluminum wheels only. No carbon fiber or titanium. As of now, Fatback Race Parts and Heintz in Concord are the authorized dealers for American Racer PRO-2.
1. Roll cage- MANDATORY-Must have minimum of three (3) bars in drivers door. No aluminum or titanium cages permitted.
2. Fuel cell- MANDATORY (mounted in metal can)
3. Seat belts-Five (5) point system- MANDATORY
4. Wind shield screen- MANDATORY
5. Fire extinguisher- with gauge, mounted in a quick release harness in reach of driver-MANDATORY
6. Battery-Must be mounted outside of drivers compartment or in enclosed bolted down metal box.
7. Fuel lines-must be under car or in tubing.
8. May run with or without roof. If running without roof, must run arm restraints.
Please see 'Safety Rules' for more information
2019 PROTEST RULES
LIGHTNING LATE MODELS
Protesting driver puts up $150.00. Driver being protested puts up $50.00. The carb is
taken apart by the track officials and completely checked for any and all modifications
using the standard carb as a guide and precision measuring tools. If found legal, the
carb owner is returned his $50.00 If found wrong, the track gets your $50.00, you are
disqualified and loose all points and money for the evening. The protestor gets their
If a carb is subject to a claim fee of $500.00, the owner of the carb accepts the protest,
they put up $50.00. The carb will then be checked as above by track officials. If found
legal, the owner gets their $50.00 plus $450.00 from the protestor. The track keeps
$50.00. If found illegal the carb owner looses their $50.00 all point and money for the
night and is disqualified. The protestor gets their $500.00 back
TOP END PROTEST:
Included in a top end protest are the heads, valves, pistons, and cubic inch. See
rules for what is legal.
To protest, the driver protesting puts up $400.00, and the driver under protest will put up
$100.00 if they accept the protest. If you refuse the protest, all points and money are lost
for the night. If the parts are legal, the owner gets the $100.00 back and $300.00 of the
protest fee. The track keeps $100.00. All points and money for the night are lost.
If found illegal the track keeps your $100.00 and the protestor gets their $400.00 back.
BOTTOM END PROTEST:
Included in a bottom end protest are the rods, pistons, crankshaft, and cubic inch. See
rule for what is legal.
A fee of $800.00 is taken from the protesting driver and if accepted a $100.00 fee from
the driver being protested. If you refuse the protest, all points and money are lost for the
night. If the bottom end is legal, the $100.00 fee is returned plus $700.00 from the
protest money. The track keeps $100.00. If the bottom end is wrong, the track keeps
$100.00 and the protesting driver gets the $800.00 back.
If any one refuses a protest or claim, the protesting driver will get all their money back,
the track gets nothing, and the driver who refuses the protest is disqualified for the night.
Any and all money put up for a claim or protest will be given to the track official and can
not be taken back. The protest or claim is considered in effect the moment the funds are
given to the track official. Money will only be given back to those affected by the protest
or claim after an official determination is made. No exceptions.