Preliminary Rules for 2003 Season
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These rules are a "starting point". Amendment of these at our first meeting in late 2001 is possible. What you see below will give you a rough idea of the technical Rulebook for LMTRA.


These rules are a "starting point". Amendment is possible. What you see below will give you a rough idea of the technical Rulebook for LMTRA.

PROPOSED INITAL SPECIFICATION RULES FOR 2003 LMTRA TRUCK SERIES LMTRA (Late Model Truck Racing Association)

ARTICLE 1 - GENERAL1.01

At all LMTRA Truck Series events, the official who is deemed the Chief Rules Steward is in charge of rules interpretations and race procedures for the event. The Technical Director is in charge of technical inspection of all race vehicles for the event. The Chief Rules Steward shall have the final ruling at the event. The Chief Rules Steward, Pit Steward, and/or the Technical Director may exclude any truck (or component thereof), design, or construction of which they deem dangerous or not meeting the specifications herein.

1.02 Two-way radio communications are allowed between driver and crewmembers. Communication frequencies must be registered with LMTRA. All communication equipment, frequencies, procedures, and operation must strictly comply with any and all applicable FCC regulations. *Each team utilizing two-way radio communications must provide one crewmember to the designated Spotters area.* Each Spotter must clearly display their car number in a manner that is easily readable by the LMTRA Official in the Spotters area.

ARTICLE 2 - ENGINES

2.01.1 The only engines legal for use in LMTRA Truck Series competition are the Chevy 350 cid, Ford Windsor type 351 cid, and Dodge 360 cid, with stock factory bore plus allowable overbore. Main caps may be either 2 or 4 bolt style. *** Maximum engine compression ratio is 9:5.1, no exceptions. Dodges are not allowed to use the Magnum engine. *** A maximum .060 inch overbore is allowable, which includes allowances for wear and tear. You can have any combination of transmission, or rear end, but engines MUST be the same as the truck body. Rear ends can be either a GM 7.5" 10 bolt, or a Ford 9- inch (see section 3.3).

2.01.2 Engine balancing is allowed.

2.01.3 No titanium, carbon fiber, or other exotics or special coatings will be allowed anywhere except as stated within these rules.

2.01.4 No roller bearings are allowed.

2.01.5 All factories casting numbers shall remain intact and unaltered.

2.02 BLOCK Only stock, OEM, (no Yates, SVO, Bow-Tie, Olds-GM Rocket Block, Dart, World, or other aftermarket or special OEM racing blocks) factory produced cast iron blocks for the engine types listed above are legal. Blocks may only be lightly de-burred. Align honing, deck milling (to square block only), and cylinder boring is acceptable if kept within allowable specs (legal deck height and .060 inch max. overbore).Torque plates may be used during block machining.

2.03 CRANKSHAFT Only stock-stoke factory made cast iron or forged steel crankshafts for the engine types listed above are legal. No O.D. turning, lightening, knife edging, or weight polishing is allowed. "Mallory Metal" balancing is allowed. Only very light de-burring is permitted. SFI rated type harmonic dampeners are strongly recommended.

2.04 CONNECTING RODS Factory produced or aftermarket steel connecting rods allowed. Maximum cost of rods cannot exceed 750.00 retail for a complete set of 8 rods, not including wrist pins, locks, etc. Maximum rod length for any engine is 6.125 inches. No aluminum, titanium or other rod substitutions will be allowed unless stated. Center to center size will be measured for legal rod length. No lightening, beam polishing, or exterior machine work allowed on rods (except bob weight removal for balancing). Heavy-duty rod bolts may be used. All rods must meet LMTRA Truck Series specifications.

2.05 PISTONS

2.05.1 Acceptable pistons for LMTRA Truck Series are cast, forged, or hypereutectic flattops. Piston wrist pins may be bushed, pressed, or floating versions. Pistons may not cost more than 600.00 retail for a complete set of 8 pistons. The retail price limit does not include the cost of rings, wrist pins, locks, etc. Pistons may not have gas ports.

205.2 Minimum deck heights, as measured at the highest spot on the piston crown, are as follows: Chevy 350 = .000 inch Ford 351 = .000 inch Dodge 360 = .015 inch

2.05.3 No slant top, angle milling, and/or excessive lightening of the pistons is allowed. Dodges may fly-cut exhaust valve area of piston tops a maximum of .050 inch.

2.04 PISTON RINGS Any style piston ring may be used.

2.05 BEARINGS Any sleeve type engine bearing may be used. Coatings to reduce friction or maintain better oil control are allowed. No roller bearings of any type shall be used.

2.08 FASTENERS Heavy duty upgraded bolts or studs may be used and are encouraged. The use of safety wire on all appropriate fasteners and hardware is encouraged.

2.09 GASKETS

2.09.1 O-ring style gaskets allowed. Any gasket or gasket material allowed.

2.10 HEADS

2.10.1 Factory produced or aftermarket IRON (only) heads for the engine type being used are legal for use in LMTRA Truck Series competition. Cast Iron bow tie heads ARE LEGAL. *** No Vortec heads for Chevy ***. Chevrolets must use 23-degree heads only, no 18, 15, 14, 10, or other degree head. Chevrolets may not use SB2 heads/ intakes, or engines. Fords cannot use Yates heads or intakes. The Ford GT-40 and GT-40P iron heads are legal. Dodge W-2 heads are legal. Firing order must remain stock, OEM. You must have Chevy type heads on a Chevy engine, Ford type heads on a Ford, and Dodge type heads on a Dodge.

2.10.2 Maximum valve sizes for heads: Chevy - 2.08 intake, 1.625 exhaust Ford- 2.08 intake, 1.625 exhaust Dodge- 2.08 intake, 1.625 exhaust

2.10.3 Minimum combustion chamber volumes allowed as long as 9:5.1 compression ratio is not exceeded:Chevy and Ford: 52 ccDodge: 62 cc

2.10.4 Cylinder head castings must remain "as-cast" by the foundry; NO porting (by hand, machine, or chemical), port matching, (hand, machine, or chemical), excessive decking (beyond the minimum chamber volume) angle milling, valve bowl, or combustion chamber polishing allowed and/or grinding is NOT allowed. The only alterations or machine work allowable are valve seat grinding, seat replacement, deck and flange milling, valve guide replacement, crack repair, stem seal machining, and rocker stud boss machining and drilling. No other machine work is allowed

2.10.5 The use of factory or aftermarket steel or stainless steel valves of stock, volume-produced type, length (no plus .100 valves or pushrods), and material as manufactured for the engine make and type are legal. The maximum allowable number of angle cuts on valves or a valve seat is three angles. No four-or more- angle valve jobs allowed. Any type guide material may be used. The valve guides must be in the stock factory location, angle, and spacing. Valve springs must be of the stock type. No triple, conical, or progressive springs allowed. Retainers and locks may be steel, chrome-moly steel, or titanium. Heat risers may be plugged.

2.10.6 Any valve covers made of steel or aluminum may be used. The left valve cover must have at least two breathers mounted on 4" minimum stacks.

2.11 VALVE TRAIN

2.11.1 Only the following hydraulic cams, from Comp Cams, are legal for use in LMTRA truck racing competition.

Chevy: Comp Cams Part #12-250-3

Chrysler: Comp Cams Part # 20-225-4

Ford: Comp Cams Part # 35-242-3

No other cam from any other manufacturer will be allowed or any hydraulic roller, solid lift, flat tappet, 3/4 cams, mushroom cams, or true roller cams allowed. No special grinds allowed. Springs may not be triple, progressive, conical, or PACALOY. Spring pressures may not exceed 150 pounds.

2.11.2 Only volume produced, stock type stainless steel or chrome-moly anti-pump up hydraulic lifters are allowed. Push rods may be sized to length to fit geometry. Roller rockers or roller tip rockers ARE allowed. No rev-kits, stud girdles, offset rocker arms; roller lifters, light weight lifters, coated lifters, mushroom lifters, or oversize lifters are permitted in LMTRA Truck Series competition. Stock or roller timing chains are allowed. One or two-piece timing chain covers are allowed. No gear drives or belt drives are allowed. Cam thrust buttons are allowed. After-market rocker arm retaining nuts are allowed.

2.11.3 Valve trains may be adjustable provided all other specifications are met.

2.11.4 Chevy rocker studs may be pinned or machined for screw in studs and guide plates. Stock 1.5:1 ratio must be retained.

2.11.5 Ford rocker studs may be pinned or machined for screw in studs, and may use Ford factory stock style, early, 1.6:1, non-rail rocker arms and guide plates. Rocker arm pivot shims may also be used.

2.11.6 Dodges may be converted to use volume-produced Dodge truck adjustable rocker arms and push rods. They must retain the stock ratio of 1.5:1.

2.12 INTAKE MANIFOLDS2.

12.1 The only make of intake manifold legal for LMTRA Truck Series competition are the Edelbrock "Air Gap" series:
Chevy's use: #7501- RPM Performer Air Gap#7516- OR RPM-Air Gap Performer

Chryslers use: #7576- RPM Air-Gap 340/360#7176- OR Performer RPM 340 /360

Fords use: #7581- RPM Air-Gap 351-W#7181- OR Performer RPM 351-WFords must use only Windsor style heads, manifolds, blocks, firing order, etc.

2.12.2 Intake manifolds must be "as cast" by Edelbrock. No alterations to the manifolds. Moderate and reasonable machining to facilitate engine fit is allowed. No drilling, porting, or port matching allowed. All air drawn into the engine must be drawn in through, and metered by, the carburetor. No add-on air horns or devices are permitted inside the plenum or runners, and no coating will be allowed inside or outside the intake manifold.

2.12.3 A 1.00 inch carburetor adapter/spacer is allowed, and may be made of any material. No modifications (including drilling) to the spacer plate allowed. Only two gaskets with a maximum thickness of .065 inch each are allowed. No additional "heat shield" is allowed.

2.14 CARBURATION

2.14.1 The only carburetor legal for LMTRA Truck Series competition is the Holley 4150 HP series part #80507-1 390 cfm 4 BBL with mechanical secondaries. Blue printing of carburetors is allowed ONLY as far as improvements made by Holley for the 4150 series, part number 80507-1, 390 cfm. Otherwise, carburetors must remain unaltered, as supplied from Holley. Absolutely no other modifications (including air bleeds) allowed. No grinding, drilling, filing, polishing, or metal removal allowed. The accelerator pump cam, squirters, power valve, and main jets may be changed, but not altered or modified.

2.14.2 All air entering the carburetor must pass through the top of the carburetor by way of the air filter.

2.14.3 Throttle linkage must have a minimum of two (2) throttle return springs in operating condition at all times.

2.14.4 No injection system(s) of any type is allowed.

2.15 AIR CLEANERS Steel or aluminum air cleaner housings may be used. Air cleaner units must be 12" minimum in diameter, 18" maximum in diameter, and five inches maximum in height. The air cleaner element/filter must be unaltered and in place whenever the engine is running. The air cleaner unit must be totally covered by the hood. No holes, vents, tubes, ducts, or any other devices may be used to guide air to the air cleaner unit. The hood must fit tight to the windshield/cowl area. Absolutely no flow control items are allowed inside or outside the air cleaner unit for any reason. The air cleaner unit must utilize a solid top with air entry through the perimeter of the unit only. The air filter must be open and unrestricted in its entirety (360 degrees). No shields, baffles, or other add-on equipment is allowed. K & N Air filters are legal for LMTRA competition.

2.16 FUEL SYSTEM

2.16.1 Only the stock type, block mounted, mechanical fuel pump is allowed in LMTRA Truck Series competition. No electric, belt driven, vacuum driven, or cam driven fuel pumps are allowed. The use of ice (wet or dry) on or in the engine, radiator, air cleaner, or fuel system is not allowed.

2.16.2 LMTRA approved fuel cells are mandatory. Fuel cell must be enclosed in a separate container made of minimum 20-gauge steel with a 22-gallon maximum capacity. The chassis manufacturer's factory mounting location of the fuel cell must be maintained. No raising, lowering, or movement of the fuel cell is allowed. All fuel cells must have a fuel cell guard attached to the frame. A fuel cell guard of 1.75" diameter steel tubing and .095" minimum wall thickness is mandatory. Fuel may be added only by opening the rear deck lid; no quick fill mechanisms are permitted. A ground strap between the fuel can and fuel cell while refueling is highly recommended. The minimum fuel cell to ground height is 8 inches, measured with driver.

2.16.3 Legal fuel for LMTRA Truck Series competition is gasoline, leaded or unleaded from a gas station or aftermarket fuel supplier. The gasoline has no octane limit (Unocal, VP, Sunoco, etc.). No additives will be allowed (no nitrous oxide, nitro methane, nitro butane, propylene oxide, benzene, toluene, solvents, alcohols, etc.). LMTRA reserves the right to test the fuel at any time. Fuel must pass odor, litmus, color, specific gravity, and any other test necessary to enforce this rule. Fuel will be teched during post race inspections and before qualifying.

2.17 IGNITION SYSTEM

2.17.1 Stock or aftermarket distributors are legal for LMTRA competition.

2.17.2 Only the ignition system listed below is legal. This system allows the use of rev-limiter chips, which may be required at some tracks. All competitors must supply their own rev-limiter chips and have a LMTRA Tech inspector install AND SEAL the chip before competition begins. Competitors will be informed in advance on the LMTRA website of what rev-limiting chip will be used for an upcoming event, if any chip is to be used at all.MSD Series 6AL Electronic Ignition boxes, coils, caps.

2.17.3 Any HEI type distributor is allowed. No magnetos or crank triggers are allowed.

2.17.4 Only one battery is allowed and it must be contained in a battery box that is ventilated, with a plastic or rubber hose venting battery vapors below the truck, between the frame rails. Battery may not be mounted in the driver cockpit.

2.18 COOLING SYSTEMAluminum radiators are allowed and must be of stock appearance, and mounted in the chassis manufacturer's factory location. Water pump impellers may be altered. Belts and pulleys must be "Vee" type configuration. No serpentine belt systems are permitted. Electric fans, engine driven fans, and direct drive are allowed. No clutch fans allowed. No reverse cooling systems are allowed. Fan shrouds may be used. Only LMTRA approved air dams are permitted. Anti-freeze shall NOT be used in the engine cooling system during LMTRA practice, testing, or competition. Use of Water Wetter or similar type products is allowed.

2.19 EXHAUST

2.19.1 All headers must be approved by the LMTRA Technical Director prior to event competition. No specialty, custom, or modified headers will be allowed. All headers must be of standard production and readily available. No 180-degree systems, stainless steel construction, and systems with reversion steps will be allowed. Header heat reducing coatings / thermal barriers, and wrapping allowed. Merge type collectors not allowed.

2.19.2 All tubing past collectors must have a maximum ID of three (3) inches.

2.19.3 Mufflers are required at all events and practices. Mufflers must be no louder than 95 Db's at 100'. - PLEASE BE READY FOR THIS!

2.20 OIL SYSTEM Only a stock type, wet sump steel oil pan may be used. It may be altered for baffling. The minimum pan to ground clearance is 4 inches. No dry sump systems allowed. No two stages or belt driven oil pumps allowed. Windage trays, crankshaft scrapers, regulators, and filters are allowed. The block can only be fed oil from one location (no dual feed systems). Stock or high volume oil pumps are allowed. Any type oil pick-up is allowed. Oil system pressure accumulators are recommended, and must be mounted outside of the driver's compartment. No oxidizers may be added to the oil.

ARTICLE 3 - DRIVE TRAIN

3.01 TRANSMISSION

3.01.1 Only the following automatic transmissions are legal for LMTRA Truck Series competition: Chevy T-350 or T-400; Ford C-4 or C-6, and Dodge A904 or 727 Torqueflite. No 4, 5, or 6 speed manual transmissions allowed. No powerglides allowed.

3.01.2 The above automatic transmissions may be converted to manual operation. Transmissions must use a torque converter as designed by the OEM. The minimum converter diameter as measured at the housing is 11 inches. The maximum legal stall speed is 3,000 RPM. The transmission must have all forward and reverse gears functional. Lockout shifters are allowed.

3.02 DRIVESHAFT Only steel drive shafts are allowed. Balancing is highly recommended. No shortened, aluminum, or carbon-fiber drive shafts will be allowed. Drive shafts must be painted white and clearly indicate LMTRA issued truck number. A minimum of 2- (two) steel drive shaft safety loops, minimum 1-inch wide, must be installed between the rear- end housing and the backside of the driver's compartment.

3.03 DIFFERENTIALS

The only approved differential assemblies allowed are the GM 10-bolt (7.5" gear); and Ford 9- Inch rear end. NO QUICK CHANGES ALLOWED. * Any truck can use either rear end, they do not have to match manufacturer. * No modifications of any type allowed except as noted in these rules. No cambered rear ends. No bending, twisting, or rotating of axle tubes, perches, or mounts are allowed, and no cutting, welding or grinding on rear end is allowed. Any readily available gear ratio that will fit inside the stock, unaltered, GM metric housing, Ford 9 inch housing is acceptable, no custom made gear sets are allowed. The GM rear end may be modified to utilize rear disc brake system. GM type caliper and rotors must be used. Rear end coolers and pumps to circulate fluid to and from cooler are highly recommended. Rear end cooler pumps are required to be belt driven only, no electric cooler pumps. Rear end coolers MAY have electrical cooling fans.

3.01.3 Differentials may be open or locked. When locked, they must be welded securely or locked with a mini-spool. *Aluminum spools, limited slip devices, posi-trac, or ratchet (Detroit Locker) type units are allowed. * Axle-saver bearings, c-clip eliminators, heavy-duty c-clips, and heavy-duty after-market axles are allowed and recommended. Gun-drilled axles are allowed.

3.01.4 Upper torque arms at the rear axle housing may be re-drilled to correct the pinion angle. Note that stock upper and lower rear trailing arms must be used on any rear differential that is used, and NO type of additional pull bar, lift bar, track bar, etc. may be used.

ARTICLE 4 CHASSIS

4.01 General Manufacturers Specifications

4.01.1 The only approved frame is the General Motors 1978 to 1987, "G" body, 108.1", metric frame. All measurements, lines, holes, etc. must retain the manufacturer's specifications. No plating of the frame. No boxing the "C" channels. 2"x3" rectangular steel tubing (minimum .083", maximum .125") may be used to replace the rear frame horns from the aft side of the spring pocket perch and shock mount (not the spring bucket), to the aft side of the stock frame. Tubing must maintain a minimum ground clearance of 10", measured from the bottom of the tubing to the ground. The front bumper must remain entirely behind the body panels. Rear bumpers may be outside of body, but must be tight against rear body panel and may not extend past the side of the body. Side nerf bars are NOT allowed. There shall be no rough edges on any bar or bumper on the truck.

4.01.2 Securely fastened driver's side door plate(s) constructed of .125" minimum thickness steel, positioned to adequately protect the driver from injury resulting from foreign objects penetrating through the bodywork is MANDATORY.

4.02 ENGINE PLACEMENT

The engine and engine mounts must be located in the chassis manufacturer's factory position, and located in the middle of the frame rails. The measurement from the front of the rear axle housing to the back of the engine block must be a minimum of 93 inches.

4.03 WHEEL BASE

108 inches, plus or minus (1) inch.4.04 TREAD WIDTHMaximum tread width is 65" when measured from outside of one tire to the inside of the other tire, or center-to-center.

4.05 WEIGHTS

ALL TRUCKS MUST WEIGH A MINIMUM OF 3,000 POUNDS AT ALL TIMES. NO MORE THAN 55% LEFT SIDE WEIGHT AT ANY TIME. DRIVER WILL BE SEATED AND ALL RACING EQUIPMENT ON WITH TRUCK FULL OF FUEL WHEN CHECKING WEIGHT*. The 3,000-pound minimum must be maintained even after completing a race, no exceptions. All added weight must be in block form (no pellets), and must be securely mounted and attached with at least two (2) 1/2' bolts and washers. Weight may be placed in the "C" channel section of the frame, but may not be attached in a manner that boxes the frame. No weight may be placed in the driver's compartment. All added weights must be painted white and have truck number on them.

4.06 GROUND CLEARANCE

Minimum ground clearance for the frame rails is 6". Minimum ground clearance for all body parts is 4". Minimum ground clearance for engine cross-member is 3". All measurements will be taken from the lowest point with the driver in the truck.

4.07 FRONT SUSPENSION

4.07.1 Lower control arms, spindles, brake calipers, and lower ball joints must be as produced for the GM "G" body, 108.1", metric frame being used. No modifications of any type are allowed. Moog chassis parts and pieces allowed.

4.07.2 Heavy duty aftermarket STEEL hub assemblies on BOTH right side wheels are mandatory at all LMTRA events.

4.08 SPRINGS

All springs must be of coil-type. No custom wound springs are allowed. No coil-over versions allowed.

4.09 SHOCKS

LMTRA Truck Series must approve shocks. Only one (1) shock per corner (wheel). All approved shocks shall be steel bodied, non-adjustable. Shocks must remain as manufactured.

4.10 SWAY BARS

Any General Motors sway bar that mounts in the stock location, without alteration, may be used. No hollow or racing sway bars are allowed. No Heim joints are allowed on the sway bar linkages. Sway bar rates may be changed. Adjustable sway bars are allowed. Rear sway bars are also allowed.

4.11 BUSHINGS

No eccentric bushings, or adjustable devices are allowed.

4.12 STEERING

Stock type steering box must be used. Tie rods, sleeves, idler arm, pitman arm, and center drag link must be stock type for the GM "G" body, 108.1", and metric frame being used. No Heim joints in the steering tie rods are permitted.

4.13 TIRES

All tires must be the Hoosier series Hoosier item # 37130, 37 Late Model Asphalt slick tire, 8.0 / 27.0/ 15 L in either F53 (medium), or a F75 (hard) compound. You may use either compound, but all 4 tires must be the SAME compound. These are true slick tires that retail from 95.00 to 105.00 per tire. No shaving, grooving, altering, chemical coating, treating, or soaking is allowed.

4.14 WHEELS

4.14.1 All wheels must be LMTRA approved, 15" x 8" STEEL racing wheels 5 on 4.75 pattern, with a 3" maximum offset and a minimum weight of 19 pounds. Wheels may be painted or chrome. Balancing the tire and wheel assembly is highly recommended. Wheel weights must be glued and taped on.

4.14.2 No air pressure bleeders are permitted. The use of Nitrogen gas is allowed.

4.14.3 One-inch (1") lug nuts are required on all wheels.

4.14.4 No type of hubcap or wheel cover allowed.

4.15 BRAKE SYSTEM

4.15.1 Brake system components must be as produced for the 1978-87 GM "G" body, 108.1", metric frame being used unless otherwise noted. Heavy-duty replacement front hubs and rotors are required (see 407.2). No lightweight components are allowed. Dual reservoir master cylinder must be used. Steel braided brake hose is recommended. Pad materials are optional. Hydraulic brake proportioning valves are allowed. Shut off devices are NOT allowed.

4.16.2 Rear disk brake systems are allowed. Any GM style heavy-duty aftermarket rear rotor and cast iron metric calipers may be utilized. Slots in rotors allowed for additional cooling.

ARTICLE 5 - BODIES

501.1 No modifications will be permitted unless requested by LMTRA. In the event of an incident requiring work to be performed, repairs will be subject to inspection by LMTRA officials to ensure compliance. The fiberglass body must have a neat appearance and must maintain its original configuration, size, and shape. All bodies must be positioned on the frame in the exact location as designed and securely fasten to the vehicle. The body must maintain standard windshield opening. A complete, .125-inch thick (minimum), Lexan windshield is mandatory. Window attachment and bracing must remain as factory produced. No side window coverings (except safety nets) are allowed. Mirrors are allowed, but must be completely inside the roll cage. Rear deck panel must remain tightly closed during the race. No sheet metal, or other material that could be construed by officials as affecting the flow of air in, through, or around the truck will be allowed.

501.2 The maximum/minimum rear spoiler size is 8" tall x 60" wide x .125 inch thick and the minimum angle is 55 degrees relative to the ground. Maximum angle is 75 degrees. Spoiler must be Aluminum only...no Lexan, steel, or plastic. Spoiler braces are allowed, provided there are no more than 6 at any time. Spoiler braces CAN be adjustable, but only by hand and not during race conditions.

501.3 No profane, derogatory, or inflammatory signs, decals, or artwork will be allowed on any truck at any time.

ARTICLE 6 - ENGINE AND PARTS PROTESTS

6.01 Any part (except for body and interior) may be claimed within 15 minutes after the completion of a LMTRA Truck Series FEATURE event by any LMTRA licensed Truck Owner or Official for the manufacturer's catalog / website retail suggested list price. The Chief Rules Steward or Technical Director must approve all claims. Any competitor refusing to relinquish a part shall be disqualified from that event, and shall have all points and monetary awards withheld.

ARTICLE 7 - SAFETY EQUIPMENT

7.02 Before any race truck may participate in a LMTRA sanctioned event, it is subject to inspection by LMTRA Race Officials. All inspections will be performed with driver seated in truck, and truck in 'race ready' condition.

7.03 All drivers must wear correctly fitting safety helmets designed specifically for auto racing that meet or exceed the 1995 Snell Foundation or SFI Foundation 31.2 specifications and are labeled accordingly.

7.04 All drivers must wear fire resistant shoes, gloves, and uniform fitted snugly around the neck, wrists, and ankles. Head socks and helmet skirts are highly recommended. These items meet or exceed SFI Foundation specifications 3.2A and 3.3.

7.05 Safety neck braces are highly recommended.

7.06 All chassis protrusions and roll cage tubing in close proximity to the driver's helmet or extremities must be padded with securely attached high impact padding, SFI rated is encouraged.

7.08 SEATING SYSTEM

7.08.1 Aluminum seats are mandatory. The seat must be of the type that wraps around the sides of the driver's chest sufficiently to provide lateral support to the driver's upper torso, on the right and left sides. The seat must be mounted to the chassis in a minimum of four positions with 5/16" steel bolt and nut, minimum. Each mounting hole in the seat must have a steel (minimum .060 thickness) or aluminum (minimum .125 thickness) doublers with a minimum 2-inch diameter.

708.2 It is absolutely necessary to provide a kick-up (roll-up) forward to the buttocks of sufficient height and strength to prevent forward movement and/or rotation of the torso under the seat belt.

708.3 It is mandatory that all cars have a headrest of high impact, shock-absorbing material behind the driver's head with a minimum thickness of one (1) inch. Seats with built in headrests must also comply with this requirement.

7.08.4 Adequate padding must be used to absorb impact.

7.08.5 The use of an approved seat belt with a latch/lever release mechanism is mandatory. Both the fastening design and condition of the belt are subject to the inspection of the Technical Committee. Life of the belts in use shall not exceed two (2) years and must have the manufacturer stamp date at all times in plain, easy view. All belts must have a label showing that they meet SFI specification 16.1.(1) Seat belts must be worn as tight as possible.(2) Seat belts must be worn in such a manner that it passes around the pelvic area at a point below the anterior superior iliac spines. Under no condition may it be worn over the area of the intestines and abdomen.(3) Seat belts should not pass over the sides of the seat. They should come through the seat at the bottom on each side thereby wrapping and holding the pelvic area over the greatest possible area. At any point where the belt passes through the side of the seat, the seat edges must be rolled or have grommets to prevent chafing and cutting of the belt material.(4) Five or six point (crotch) belts connected to the main belt quick release mechanism and securely attached to the chassis are mandatory.

7.08.6 Use of double over-the-shoulder straps is mandatory. The minimum width of shoulder straps is three (3) inches. Both the fastening design and condition of the straps are subject to the inspection and approval. Use of seat belt systems shall not exceed two (2) years, and must show the manufacturer stamp date. All straps must have a label showing that they meet SFI specification 16.1.(1) Shoulder straps should be attached directly to a strong structural member of the chassis close behind the driver's head and neck. At points of attachment they should be four (4) to six (6) inches apart. They should be attached in a line approximately 90 degrees to the seat back and be approximately level with the top of the driver's shoulders.(2) Where the straps pass through the seat, the edges must be rolled or have grommets to prevent chafing or cutting of the strap materials.(3) Shoulder straps must be secured behind the drivers shoulders so that they are prevented from sliding sideways more than one (1) inch in either direction.(4) The shoulder harness should be worn as tight as possible.

7.09 No loose objects may be used in driver's compartment or outside body or hood area.

7.10 Automatic Halon or Dry chemical type on-board fire extinguishing systems with a minimum of two (2) nozzles; one (1) positioned towards the driver, and one (1) in the engine compartment are STRONGLY suggested.

7.11 Driver side window nets are mandatory. All window nets must conform to SFI Foundation specification 37.1, and shall not exceed two (2) years of age. All nets must fit tight and be secured with a quick release type latch.

7.12 A main battery power switch must be easily accessible to the driver, and to outside access from the driver's side window. Switch should be mounted on the dash from the centerline of the truck leftward. Switch must be clearly marked for "on" and "off" positions.

7.13 No driver shall compete in any event with head or arms extended outside the race truck.

7.14 No person will be permitted to ride on the outside of a race truck at any time.

7.15 No more than one person may occupy a truck at any time while the truck is in motion.

7.16 All teams are required to maintain, and have readily available a minimum of one (1) fully charged, properly dated and inspected B or C type fire extinguisher, minimum 10 pound capacity in the pit area, ready for deployment at any and all times.

Obviously Unfair or Performance Advantage

In the event that one, or more, brands of truck seems to exhibit an obviously dominating performance after 3 events, LMTRA officials MAY make changes to that brand of truck to decrease its performance, OR give additional performance to the other makes of trucks. We realize sometimes a team will find the "perfect chassis setup". That is allowable, but if this occurs for several races, we will look into rule alterations for that brand. The highest goal of LMTRA is to maintain an even level of competition in the areas of aerodynamics and engine power. We feel the main difference should be driver AND team abilities, not in the body or engine. If the LMTRA Board of Directors and the Chief Rules Steward feels change(s) need to be made, testing will be done before any new rules are imposed. Rule updates will be posted on an obvious, and highly viewed area of the LMTRA website as well as mailings, e-mails, phone calls or other communications methods will be implemented to make sure ALL competitors know what has changed and when the new alterations go into effect. LMTRA reserves the right to mandate safety changes at ANY time in order to better protect drivers, owners, crewmembers, staff, and fans.


 

Trucks on an Oval. Used with permission from Jeff Willaims (C)2001
E-mail LMTRA: lmtratrucks@yahoo.com