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2012 Michindoh Truck and Tractor Pull Association
Rules
Final Rules for Year 1-29-12
General Rules:
1. Michindoh Classes are: 5500lb. 2wd Small Block (points class)
6000lb. Stateline Pro Street 4x4
(points class)
6200lb.2wd Super Stock (points
class)
6200lb. 4wd Altered Stock (points
class)
9,500lb. Hot Farm Tractors (points
class)
8,500lb. Pro Farm Tractors (points class)
8,000lb. 2.6 Street Diesel (points class)
Big Block Modified Rails (points class)
8,000lb. Work Stock Diesel
8500# or less Michindoh Open
Protest and Tear Down Rules:
You may protest (if you are a Michindoh member in the same class) to have any vehicle pumped the night of a pull by presenting $100.00 to the president or vice president present. If the vehicle is found to be illegal by the pump, the owner may tear down the engine at their expense to prove it legal or be barred from competition for one year. If the vehicle in question is found to be legal it will keep the $100.00 pump fee.
You man also protest to have a vehicle torn down (if you are a Michindoh member in the same class). The person protesting must bring $750.00 cash to the president or vice president present. The protest will be discussed. If the vehicle in question is to be torn down, it will have the option to do it at the track or at the nearest suitable location. The vehicle or engine will be impounded until the tear down. The tear down must happen with-in three days of the protest. If the vehicle in question is found to be legal, all protest fees will go to the owner.
Any vehicle found illegal and/or refuses to be protested or teched, will be barred from competition for one year. Unless, they are willing to pay a reinstatement fee of $500.00 to the club and prove the vehicle legal. Any money and points won the day of the protest will be returned or withheld by the club. If the vehicle in question refuses to refund winnings, the amount of those winnings will be added to the reinstatement fee.
The tech-official for the class has the right to check any vehicle they feel may be in violation of any rules without a protest fee with the permission of the board of directors.
Causes for Disqualification:
1. Loss of anything off the vehicle (i.e.: weights, parts, etc.) while it is in motion, except in the case of breakage in the drive-line, until red flag is waved.
2. Loss of safety equipment or failure of safety equipment to function.
3. Excessive loss of liquid or steady stream.
4. Illegal fuel and use of Nitrous Oxide.
5. Any part of your vehicle out of bounds from start to finish while under the green flag.
6. Unsafe operations of any vehicle in pits or on track (i.e.: no hole shots, excessive speed, etc.)
7. INTOXICATION of any driver or pit crew member or any smell of alcohol on a driver’s breath.
8. Illegal equipment.
9. Leaving starting line under red flag.
10. Un-sportsman like conduct.
11. No reverse in vehicle.
12. If DQ for cheating, all points and money will be forfeited.
13. If a DQ vehicle will receive last place points, and if more than 1 vehicle is DQ, they share at the bottom of the list in the same order they were otherwise. Out of bounds only.
ALL THE ABOVE RULES WILL BE STRONGLY ENFORCED DUE TO YOUR SAFETY AND THE SAFETY OF OTHERS. THE OFFICIALS’ DECISIONS ARE FINAL!
**The Head of Class/Tech Official for each class will enforce all of the rules! Every vehicle will be teched on a random basis at some point throughout the season.**
6200lb. 4wd Altered Stock
1. Hood modifications and upright headers are acceptable.
2. Tires must be D.O.T. approved for highway use and uncut. No recaps.
3. Protest rules in effect.
4. The decisions of the pulling officials are final.
5. Kill switches are mandatory. Electric fuel pumps must be wired through the kill switch.
6. Trucks must have a full body, no flat beds, if bed floor is removed it must be covered and not visible to spectators.
7. Will allow racing seat.
8. Fuel tanks are allowed to be in front of vehicle of they are SFI and have braided hoses and pressure coupler. Batteries may be mounted in front of the truck but battery must be enclosed.
9. All drivers are required to wear helmets and jackets with a SFI rating of 3-2a-1.
10. All drivers are required to wear seatbelts.
11. All vehicles must have a fire extinguisher.
Weights:
1. Front weights to be a maximum of 60” from center of front axle.
2. No loose weights in cab.
Hitches:
1.
Maximum hitch height is 26 inches, & minimum 42 inches from center of rear end
maximum of 48 inches.
2. You must use a steel plate hook point with a minimum 31/2 inch hole.
3. Pivot point of hitch cannot be forward of center of rear axle. It must be
below top of frame rails, and hook point must be behind frame rail or body.
4. Hitches must be tight and have no movement in any
direction.
Engines:
1. Maximum 514 cubic inch limit, 1% tolerance.
2. Any single four-barrel carburetor is allowed.
3. No turbochargers or superchargers.
4. No fuel injection unless factory equipped.
5. Cast iron block and heads only, except FORD FE allowed to run aluminum
cylinder header.
6.
Aluminum intake may be used.
7. No pressurized fuels. No mthanol alcohol fuel.
8. Front of engine block cannot extend more than 10 inches of the center of the
front axle. Front axle must be in stock location.
Transmissions & Drivelines:
1. Maximum wheel base 134 inches center to center.
2. Stock type one ton or two ton drive-lines are permitted. No planetaries.
3. Drop
box’s are allowed.
4. May block frame solid. MUST HAVE u-joint covers & drive shaft loops on front
& rear drive shafts.
5. Must have scatter proof bell housing or automatic transmission blanket, and
S.F.I. flywheels.
5500# 2WD Small Block
Engines:
1. Engine must be small block no exceptions.
2. Maximum size 360 cubic inch. 1% tolerance, naturally aspirated V8 engine.
3. Cast iron
block and cast iron heads (23 degrees, +/- 1 degree ) only.
4. Single four-barrel carburetor. 4150 maximum. No Dominators.
5. Aluminum intakes allowed must accept 4150 flange. No 4500 series intakes.
6. The front of the engine block cannot extend more than 160 inches forward
of the center of the rear axle or 20 inches forward of the center of the front
axle.
7. Balancer must be S.F.I. approved or covered 360 degrees with ¼ steel.
8. No roller-cams.
9. Gas only. No 100% alcohol fuel,
Hitches:
1. Maximum hitch height of 30 inches.
2. Minimum 36 inches behind center of rear axle.
3. Maximum 48 inches behind center of rear axle.
4. Pivot point of hitch cannot be forward of the center of the rear axle.
5. Must be rigid at all hook points.
6. Must be no smaller than 3.5 inch hole at hook point.
Wheels
and Tires:
1. Can run any D.O.T. uncut tire. No recaps.
2. Maximum tire height of 35 inches and a maximum width of 14 inches.
Transmission and Drive Lines:
1. Stock altered frames, no tube chassis.
2. Maximum wheel base of 140 inches center to center.
3. All U joints and yokes must have 360-degree covers, 6 to 10 inches long, and be .125 inches think steel or .25 inch thick aluminum. Covers must be attached with a minimum of 2 grade 5, 3/8 inch bolts.
4. Drive shaft loops required. A minimum of 2 grade 4, 3/8 inch bolts must be used to attach loops to frames.
5. Bell housing must be covered by one of these methods:
a. Scatter-proof bell housing ( Manual transmission)
b. Transmission blanket (Automatic transmission)
6. S.F.I. approved flywheel required
7. Any rear end allowed.
Weights and Safety:
1. Weights can be mounted anywhere on the truck in a safe manner, no lose weights in cab.
2. Weights can not extend more than 60 inches forward of the front axle.
3. Driver must wear a seat belt.
4. Batteries must be in a protective case if inside the cab.
5. Must have working kill switch on rear of truck must kill electric fuel pump if it quits.
6. Brakes must hold truck.
7. Must have a radiator overflow.
8. Drivers must be 16 years of age and have a valid drivers license.
9. Hood required covering as much area as possible.
10. Engine side shields required unless inner fenders are installed.
11. Nerf bars at least 8 inches behind clevis or body to prevent damage.
12. Must have wheelie bars, maximum ground clearance of 6 inches and minimum of 18 inches behind rear axle.
13. Fuel tanks are allowed to be in front of vehicle if they are S.F.I. approved and have braided hoses and pressure coupler.
14. All rules are in effect for 3 years (2010-2112) with the exception of safety requirements approved by Board.
15. All drivers are required to wear helmets & jackets with a SFI rating of 3-2a-1.
16. All vehicles must have fire extinguisher.
6200lb. 2wd Super Stock
RULES LOCKED FOR 3 YEARS (2012-2014)
With the exception of safety equipments approved by the Board
Engines:
1. Maximum single 485 cubic inch 1% tolerance, naturally aspirated V8 engine.
2. Cylinder heads: two valves and one spark plug per cylinder. Aluminum heads
are allowed. No less than 24 degree head. No hemi head.
3. Legal aluminum heads: CHEVROLET: dart-320, 360, and Pro 1, Brodix 1 & 2, and
all Edelbrock. FORD: Cobra jet, Blue Thunder and TFS A460. CHRYSLER: Indy 444-1.
Not limited to these heads, but must meet A & B.
3a. Must have cast aluminum manifold.
3b. Must except stock rocker arm assembly.
4. The front of the engine block cannot extend more than 160 inches forward of
the center of the rear axle or 20 inches forward of the center of the front
axle.
5. One carburetor, gasoline only, no pressurized fuels, no methanol.
6. Balancer must be S.F.I. approved or covered 360 degrees with ¼ steel.
Hitches:
1.
Maximum height 30 inches.
2. Minimum 36 inches behind center of rear axle.
3. Maximum 48 inches behind center of rear axle.
4. Pivot point of the hitch can not be forward of the center of the rear axle.
5. Must be rigid at all hook points.
6. Must be no smaller than a 3-1/2 inch hole at the hook point.
Tires &
Wheels:
1.Can run
any size street legal DOT tire, uncut. Maximum size 35x12.50 or 315-70-16
metric.
No
recaps.
2. No split rims; snap rings or dual wheels.
Transmissions & Drivelines:
1. Stock
altered frames. No tube chassis.
2. Maximum wheel base 140 inches center to center.
3. All u-joints and yokes must have 360 degree cover, 6 to 10 inches long, and
125 inch thick steel wall (no exhaust pipe). Aluminum must be .250 inch thick &
attached with grade 5-3/8 bolts & a minimum of 2 required.
4. Solid drive shaft loops required. Must be fastened with at least 2 grade
5-3/8 bolts.
5. Must have a fully enclosed S.F.I. approved explosion proof bell housing on
standard transmission.
6. Must have S.F.I. approved flywheels for both automatic and standard
transmissions.
7. Automatic transmissions must have S.F.I. approved flywheel shield and
transmission blanket, or tunnel shield.
8. Any rear axle is allowed, but no planetary’s.
Weights
& Safety Rules;
1. Weights can be mounted anywhere on the truck in safe manner. No Loose weights
in cab.
2. Weights cannot extend more than 60 inches forward of the center of the front
axle, or any part of the truck.
3. Driver must wear seatbelt.
4. Batteries must be in protective case and must have a battery disconnect
switch on outside if mounted in front.
5. Must be mounted and working fire extinguisher in the cab.
6. No gas tanks in the cab, unless factory installed.
7. Must have working kill switches and they will be checked.
8. Brakes must hold vehicle.....steering brakes are allowed.
9. Must have radiator overflow.
10. Drivers must be at least 16 years of age and have a valid driver’s license.
11. No car bodies, vans, blazers, broncos, or fiberglass bodies allowed. With
the exception of fiberglass hoods only.
12. Hood required covering as much area as possible.
13. Engine side shields required (.100 for steel and .125 for aluminum), unless
inner fenders are installed.
14. No holes in firewall or floor larger than 1 inch.
15. Balancer must be S.F.I. approved or covered 360 degrees.
16. Nerf bars at least 8 inches behind clevis or body to prevent injury.
17. Fuel tanks are allowed to be in front of vehicle if they are S.F.I. approved
and have braided hoses and pressure coupler.
18. 2wd- must have wheely bars. Maximum ground clearance of 6", and 18" behind
rear end.
19. All drivers are required to wear helmets and jackets with a SFI rating of
3-2a-1.
Michindoh Open Class Rules
Michindoh legal vehicles
only.100% pay back.
6000lb. Stateline Pro-Street 4wd
General
Rules:
1. Trucks
must be licensed, street legal, and have proof of insurance.
2. Drivers must wear approved helmet and seatbelts.
3. No hood modifications.
4. Tires must be D.O.T. approved for highway use. 12.50 x 33 inches, or
305-70-16 metric maximum tires size. No cut tires. No boggers. No recaps.
5. Stock one ton driveline or less, OEM u-joints, driveshaft, rear end,
transmission and transfer case. Trucks must have complete suspension in factory
location with at least 1” of travel but may be temporally blocked to pull. All
rear-end bars must be forward of rear axle.
6. No
special bumpers, snowplow hook ups, or brush guards. Front bumper must be in
stock location and nothing protruding beyond the bumper.
7. The decisions of the pulling officials are final.
8. Trucks must have reverse lights of some sort.
9. Points Class
10. Must have drive shaft loops and U-joint covers, scatter-proof bell housing
or blanket, and a kill switch.
11. Any unsafe manner of vehicle (on or off track) will be disqualified.
12. Top 3 placing trucks may be teched after pull. Any truck in violation will
forfeit placing and hook fees. Tear down and protest rules apply.
13. Fuel
cells can be added but must be secured inside the bed or under the bed.
14. All drive lines in factory location, maximum wheelbase 134 inches. No
narrowing of the front or rear axle, 3 rear leaf springs minimum. (No moving
axles or transmission or engines).
15. Truck must have a full body. No gutting of truck. Trucks must have full bed and a solid floor made of metal or wood with rear inner fenders and all factory glass. No flatbeds.
16. Any truck that has been lightened in anyway may be penalized by adding weight to the rear of the vehicle at the discretion of the tech official
17. All vehicles must have a fire extinguisher.
18. Must have working brakes on all 4 wheels.
Weights:
1.
Weights can be added, but must be secured and not visible in the front of the
vehicle. Weight must be secured and can be visible in the bed of the truck.
Hitches:
1. Hitch
is to be no more than 22 inches off the ground, and hook point must be 42 inches
minimum from center rear axle. All vehicles must have easy and ample access to
the hitch to hook chain. Pivot point of hitch cannot be forward of center of
rear axle and must be below top of frame rail. No bars or chains from hitch to
axle. All bars or hitch components must fasten to the frame rail only.
2. Hitches must be tight and have movement in any direction.
Engines:
1.
Maximum 472 cubic inch. Naturally aspirated. Engines must be in factory location.
2. Single four- barrel carburetor, maximum 4150 flange allowed. No Dominator,
King Demond, or predator carburetors allowed.
3. No fuel injection unless factory equipped.
4. Cast
iron block and heads must be used. No aluminum blocks or heads unless OEM to
that vehicle. All blocks and heads must have OEM part number. No Merlin or Dart
parts.
5. Aluminum intakes are allowed.
6. Headers are allowed. All exhausts must run through the muffler and be at
least to the rear of cab.
7. No magnetos.
8. Electric water pumps are allowed.
9. 94 octane gas or less. No race fuel, alcohol, LP, Nitrous oxide, fuel
additives or E-85.
10. All engines are required to have a S.F.I. approved balancer and flywheel.
9,500lb. Hot Farm Tractors
Engines:
1. Maximum 540 cubic inch limit, 1% tolerance.
2. Water injection is allowed. No oxygen carriers or combustion accelerators
allowed. Water only.
3. Factory aftercooler allowed. AGRICULTURE/OEM USE ONLY.
4. Turbos limited to 3" inlet, 31/2" outlet.
a. Compressor wheel must protrude into the 3” bore at least 1/8 inch.
b. All turbine wheel blades must protrude into the 3.5 bore at least 1/8 inch.
c. Intake and exhaust will be measured at the intersection of the wheel face and tip diameter.
d. No variable geometry turbos.
5. Factory cast iron cylinder head and block, no aluminum or deck plates.
6. Diesel fuel only, no additives or pressurized fuels, NTPA fuel guidelines
409.
7. Stock appearing manifolds, intakes and exhaust.
8. The largest fuel injector pump allowed will be a P-pump with only one plunger per cylinder.
9. Engine block must remain in the original location as located by the manufacturer.
Hitches:
1. Hitch height is maximum of 20 inches.
2. Must be within 18 inches to 30 inches behind the center of the rear axle.
3. Must be ridged with no movement in all directions.
4. No more than 11/2 inch difference between hitch mounting point and hitching
point.
5. Hook hole is required to be a minimum of 31/2 inches ID (allow ample room for
person hooking the chain).
Tires &
Wheels
1. Maximum tire size 20.8/38.
2. Cut tires are allowed.
3. Front tires must track rear tires.
Safety:
1. Emergency air shut-off is mandatory (must be easily accessible to person
hooking the chain).
2. If equipped with an electric fuel pump, tractor must have:
a. an electric kill switch wired to the emergency air-shut-off, or
b. a manual three-way dump valve ahead of the injection pump, to be operated by
the
driver.
3.Must have fire extinguisher that is within reach of the driver.
4. Must have working, individual rear brakes. Must have needle bearing cross in differential.
5. Must have wheelie-bars.
6. Must have clutch blanket or steel shield installed 270 degrees 3/8 inch
thick, and 12 inches wide.
7. Seat belts required.
8. Roll over protection mandatory. 3 bar roll cage manufactured from 2” ODx.120
wall.
9. Must have a steel flywheel and clutch assembly.
10. Engine side shields are mandatory. Shields must be solid and a minimum of .060” thick if steel, or .120” thick if aluminum.
11. Tie-bars securing front frame rails to rear axle housing are mandatory.
12. All drivers are required to wear helmets and jackets with SFI rating of 3-2a-1.
13. Must have 2-3/8” bolts in cross pattern installed in exhaust pipe.
Appearance:
1.
Tractor must be in stock appearance, hoods, grills, & fenders, (except injection
pump & after cooler).
2. Must have stock appearing frame rails.
3. Maximum wheel base is 114”.
4. Maximum length is 13’ from center of rear axle to forward-most part of tractor, including weights, not including front hitch.
5. Stock bell housing, stock transmission housing, and stock final drive housing or manufacturer’s replacement. No component chassis.
8,500lb. Pro Farm Tractors
Weight:
1. 8,500 lbs
Engines:
1. Maximum 510 cubic inch limit, 1% tolerance.
2. Water injection is allowed. No oxygen carriers or combustion accelerators
allowed. Water only.
3. Turbos are limited to 3" inlet x 3.5” outlet.
a. Compressor wheel must protrude into the 3” bore at least 1/8 inch.
b. All turbine wheel blades must protrude into the 3.5” bore at least 1/8 inch.
c. Intake and exhaust will be measured at the intersection of the wheel face and tip diameter.
d. No
variable geometry turbos.
4. No additional openings in compressor housing outside the 3" opening. MWE
groove is allowed to be open.
5. Factory cast iron cylinder head and block, no deck plates.
6. Diesel fuel only, no additives or pressurized fuels, NTPA fuel guidelines
409.
7. Stock appearing manifolds, intake and exhaust.
8. The largest fuel injector pump allowed will be a Bosch P series pump with only one plunger per cylinder.
9. Engine block must remain in the original location as located by the manufacturer.
Hitches:
1. Hitch height is maximum of 20 inches.
2. Must be within 18 inches to 30 inches behind the center of the rear axle.
3. Must be ridged with no movement in all directions.
4. No more than 11/2 inch difference between hitch mounting point and hitching
point.
5. Hook hole is required to be a minimum of 31/2 inches ID.
Tires &
Wheels:
1. Maximum tire size 18.4/38.
2. Front tires must track rear tires.
Safety:
1. Emergency air shut-off is mandatory (must be easily accessible to person
hooking the chain).
2. If equipped with an electric fuel pump, tractor must have:
a. an electric kill switch wired to the emergency air-shut-off, or
b. a
manual three-way dump valve ahead of the injection pump, to be operated by the
driver.
3.Must have fire extinguisher that is within reach of the driver.
4. Must have working, individual rear brakes. Must have needle bearing cross in differential.
5. Must have wheelie-bars.
6. Must have clutch blanket or steel shield installed 270 degrees 3/8 inch
thick, and 12 inches wide.
7. Seat belt required.
8. Roll over protection mandatory. 3 bar roll cage
manufactured from 2" OD x .120 wall.
9. Must have a steel flywheel and clutch assembly.
10. Engine side shields are mandatory. Shields must be solid and minimum of .060” thick steel, or .120” thick aluminum.
11. Tie-bars securing front frame rails to rear axle housing are mandatory.
12. All drivers are required to wear helmets and jackets with SFI rating of 3-2a-1.
13. Must have 2 – 3/8” bolts in a cross pattern installed in exhaust pipe.
Appearance:
1. Tractor must be in stock appearance, hoods, grills, & fenders.
2. Must have stock appearing frame rails.
3.
Stock bell housing, stock transmission housing, and stock final drive housing or
manufacturer’s replacement. No component chassis.
4. Maximum wheel base is 114”.
5. Maximum length is 13’ from center of rear axle to forward-most part of tractor, including weights, not including front hitch.
8,000# 2.6 Diesel
1. Weight class is 8,000lbs.
2. Hanging weights are allowed. Weights may be in the bed. No weights in the cab or in the engine compartment.
3. Batteries must be securely mounted. They may not be located in the driver compartment or forward of radiator core support.
4. The body must be O.E.M. Truck body must include a full bed floor. The body must retain full sheet metal. After-market hoods are permitted.
5. Four-wheel hydraulic brakes are mandatory.
6. O.E.M. chassis – the engine must be in the O.E.M. location. Wheel tubes, back half conversion, tube chassis, etc. are prohibited.
7. Radiators must be in the stock location and be of least stock size.
8. All drivers must have a valid state driver’s license.
9. An O.E.M. transmission and transfer case are mandatory. They must have been an option on a one-ton or smaller.
10. The O.E.M. restraint system is mandatory and must be worn.
11. The engine is limited to stock-appearing O.E.M. make-specific compression ignition engine. The engine must be governed to a maximum of 4500RPMs unless the O.E.M. governed speed is higher.
12. All vehicles must be equipped to direct exhaust upward. 3/8 diameter bolts must be placed through the exhaust pipe in a cross pattern within one inch of each other and as close to the turbo as is practical.
13. The O.E.M. firewall is mandatory.
14. The complete O.E.M. floor pan is mandatory.
15. The fuel must be pump #1 #2 diesel only. Soy/bio-diesel fuel is permitted. Off-road diesel fuel is prohibited.
16. The injection pump is limited to a stock appearing O.E.M. engine model-specific pump.
17. The O.E.M. fuel tank is mandatory and must be used. Racing fuel cells are prohibited and must be removed from the vehicle.
18. The hitch must be a “Reese”-style hitch. Trick hitches are prohibited. The hooking point must be the rear most point on the vehicle and must be rearward of the stock location of the tailgate. The hitch may not exceed 26 inches. All Reese style hitch inserts must have class 5 or solid insert with no movement in any direction.
19. A complete interior included dashboards, door panels, headliner, etc is mandatory. Two matching front seats are mandatory. All factory controls (lights, signals, horn, windows, wipers, etc) must be retained and be operative.
20. Nitrous oxide is prohibited. No other oxygen extenders are allowed and must be removed.
21. Propane is prohibited. All system components must be removed from the truck.
22. Water injection is prohibited. All system components must be removed from the truck.
23. A non- O.E.M. rear-end housing are prohibited. It must have been an option and on a one-ton or smaller truck.
24. Tires must be DOT street tires. Cut tires are prohibited.
25. Turbo chargers are limited to a 2.6 inducer size. No slugs or plugs unless the inducer wheel is nipped down to 2.6.
26. The vehicle must retain the original factory wheelbase and truck width
27. An O.E.M.- style suspension is mandatory. Lowering and raising the vehicle height with suspension mod. is permitted. Traction bars are permitted. Blocked rear ends are allowed. Drive shaft loops, u-joint shields, and kill switches are mandatory.
28. All drivers must were approved Helmets.
The following is required in 2012:
A-All manual transmission vehicles must have S.F.I. flywheel and clutch.
B-All automatic transmission vehicles must have S.F.I. approved flex plate and blanket from rear of engine block and covering entire transmission.
8,000# 4x4 Work Stock Diesel
1. a. All vehicles must have a current license plate in place and have current registration for serial number of vehicle.
b. All items must be OEM stock unless otherwise stated in these rules.
c. All drivers must wear seatbelts and an approved helmet.
2. a. No street stock diesel vehicle can exceed 8000 pounds including the driver.
b. No weight brackets or hanging weights allowed on front of vehicles.
c. Weights must be in cargo area only and be securely fastened or contained safely therein.
d. No weights allowed in cab or under hood.
e. Any loss of weight or external parts while hooked to the sled will be cause for disqualification of the pull (excludes internal breakage).
f. Factory bumpers.
g. No weighted front-end accessories of any possible kind.
h. Any object that can be considered added weight must also be in the cargo area.
i. No hidden weight of any kind in any location.
3. a. Hitch must extend beyond rear of truck and be easily accessible for person hooking to sled. No pulling hitch, must have a “Reese” style hitch class 5, (solid hitch insert) with horizontal clevis allowed.
b. Puller must provide his/her own hitching device or clevis with a minimum 3 3/4 inch opening.
c. No pintle type hitches, chain hitches, ball hitches or any device pulling from rear end housing.
d. Hitch must be rigid in all direction, except for horizontal clevis.
e. Maximum is 26 inches from top of hitching point parallel to ground.
4. a. Any street legal D.O.T. tire is approved.
b. No studded tires, cuts or modifications allowed.
c. Factory dual wheels are permitted.
5. a. Engine must be factory produced for one ton or less 4 x 4 trucks.
b. No aluminum intakes unless factory O.E.M.
c. Diesel fuel only.
d. All exhaust must exit behind cab in a upward direction. Must have 3/8 bolts 1 inch apart in a cross pattern installed in exhaust pipe or have OEM muffler.
6. a. Body of truck must be complete with windshield and all other glass in place.
b. Vehicle must have bed in place.
d. Wooden flat beds are permitted, but must have bed and fenders to cover rear wheels.
7. a. Stock one ton driveline or less, OEM u-joint, driveshaft, rear end, transmission and transfer case.
b. Trucks must have complete suspension in factory location with at least 1” of travel but may be
temporally blocked to pull.
c. All rear end bars must be forward of rear axle.
d. All independent front suspension must be tethered and/or heavy duty tie rods installed. This is to prevent tie rod end breakage.
8. Brakes must be in place and in working order.
9. a. Stock diesel engine and factory equipped turbo
allowed.
b. 10 second limit to build boost, to be determined by starting flagman.
10. Performance upgrades that are allowed such as:
a. Air intake
b. Chip/programmer
c. No laptop adjustments under a green flag. No texting and driving!
11. a. This class is designed for stock vehicles that are regularly driven on the street.
b. All trucks will be inspected prior to class.
c. Any truck in question of being legal will be inspected by rule committee personnel and decided on by the board of directors.
ENTRY FEES AND PAYBACK
There will be a $30.00 entry fee, no membership required. Payback will be 50%.
AMERICAN
Big Block Modified Rails
2012-2016
This class is designed specifically for growth and to be affordable to everyone.
4. Competitors must be a member in good standing.
5. ABBMR pay back schedule and rules will be followed at all pulls.
John Chapel cell 765-661-0106 Tech Chairman
Ryan Smith cell 260-901-0420
Denny Dyson cell 260-571-3005
Jim Garrett cell 765-618-3829
Tom Hileman cell 419-305-2273
American
Big Block Modified Rails
Rules for 2012-2016
b. Must extend a minimum of 32” behind the center of the rear axle
1. Harmonic balancer (SFI preferred) must be surrounded by 360 degrees by a min.3/16” thick steel-also a metal strap over the center of the balancer must be a min. of 3/16” thick and 3” wide, with a max. 1 1/8 hole for access to the crank center bolt. Max. ½ hole is allowed at the timing indicator marks to allow for engine tuning. Entire enclosure must be mounted in at least 3 solid points.
A.B.B.M.R.
TECHNICAL AND POICING POLICY
Each tractor must be tech inspected prior to pulling at any event to receive any payback or points for that event. To help facilitate this, a tech day will be held prior to the beginning of the season for the purpose of checking each tractor to insure it is compliant with our current pulling rules and safety regulation.
An addition to insuring that each tractor is legal at the beginning of the season, we will be implementing a system of periodic checks of engine RPM along sealing the intake manifold to the engine and the carburetor to the manifold. The later will be done by using a bolt on each side of the intake manifold and installing a pre-drilled and numbered cap/seal. The same will be done for the carburetor by using two adjacent studs that are pre-drilled for a wired and numbered seal. The club will furnish seals and caps.
The engine RPM will be monitored by requiring each tractor to have a pre-wired harness for the purpose of checking RPM during a pull. The club will furnish the harness. A wiring instruction can be found at the link below. The first three placing tractors from the prior event will be checked as well as one tractor at random from the remaining field. At the beginning of a new season the top three points tractors from the previous year will be checked at the fist pull as well as one from the field.
In the addition to checking seals and engine RPM, the following items will be checked by at least 2 tech officials before every sanctioned event for insurance purposes. It is the responsibility of the driver to make sure his tractor has been checked prior to the pulling.
Wiring diagram for tachometer recall harness. DO NOT CUT OR ALTER THE LENGTH OF THE WIRES ON THE FURNISH HARNESS.
For this diagram please visit the American Big Block Modified Rails Website at www.abbmr.com
Note: Power to the harness must run direct. It cannot run through any switch.
If can't see diagram below check it out at www.abbmr.com
