MODIFIED RULES
1. Modified tractors are limited to the following:
A) Three (3) blown automotive WEDGE HEAD motors with 8-71 blower limit, or a single Staged turbo. No intercoolers will be accepted. Port fuel injection is acceptable.
B) Pontiac, Oldsmobile or heads of that nature will not be accepted on blown Chevy big blocks. All cylinder heads intake ports must remain in an O.E.M. configuration and accept O.E.M. intake manifold. Bac Man rat heads are acceptable.
C) Five (5) naturally aspirated small blocks permitted.
D) Four (4) naturally aspirated big blocks (non Hemi) permitted.
E) Two (2) blown Hemi or wedge motors with 14-71 blower maximum or 2 staged turbos, no intercooler permitted.
F) Three (3) naturally aspirated Hemi’s permitted.
G) One (1) Allison V-12 with either a 2 turbo setup or an aux. stage, plus a naturally aspirated Automotive motor.
H) One (1) Allison V-12 with a single staged supercharger or turbo. Fuel injector system or Carburetors, plus one (1) wedge automotive type engine with a blower maximum of 8-71.
I) One (1) marine or industrial engine and diesels may have up to 2 pressure stages.
J) Any combination of Turbine engines totaling 4,500 horsepower as rated by the military. Water alcohol injection permitted.
K) Two (2) Packard’s running gas or alcohol with a 6.51 supercharger. Stock Packard butterfly must be maintained and used.
L) No more than two (2) Allison’s on gas, with a supercharger ratio not exceeding 8.8-1. Two (2) Allison’s on alcohol may not exceed supercharger ratio of 8.1-1. Butterfly area may be no larger than 28.4 square inches.
M) Any other engine combination must be approved by the East Coast Pullers Board of Directors.
N) All automotive engines limited to two (2) valves per cylinder.
O) A maximum bore spacing of 5.00” is allowed.
P) All engines with burst panels must face away from the driver.
Q) A puller may disable an engine if their combination is over East Coast Pullers limitations.
2. Modified chassis:
A) No portion of the tractor may go beyond 14 feet from the center of the rear axle to furthest most forward point.
B) Any Modified that has the frame bolted to the transmissions must have the frame bolted to the rear axle housing. Frame must be sufficient enough to withstand the bolts being taken from the plate of the transmission or rear end, and can still support the weight of the tractor.
C) Drive shafts will not exceed 48 inches and no input or output shaft that attaches to a drive shaft will exceed 4 inches beyond a bearing. A minimum of 8 grade #8, 3/8 bolts will be used to attach any carrier bearing assembly
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mounted to a vertical plate.
D) All drive shafts must be shielded 360 degrees, with minimum 3/8 inch aluminum or 5/16 inch steel for total length. Shielding must be attached by at least 1 inch minimum material at each end.
3. Tires: No more than 30.5 inches wide will be permitted.
4. Weight: 7,500 lbs. * ALL TRACTORS ARE REQUIRED TO HAVE 47.1 SFI SPEC ROLLOVER PROTECTION
1. Maximum weight of pulling vehicle is 6,200 lbs.
2. Maximum cubic inch limit is 650.
3. Maximum bore spacing allowed is 5.00”.
4. The use of airbags, air shocks, hydraulic cyclinders or electronic controls as components of a chassis’s suspension system is not allowed. This shall not prohibit the use of conventional sealed circuit shock absorbers that have no external plumbing lines or external reservoirs.
5. Hitch height maximum is to be 26” at point of hook before, during and after pull. Hitch must be rigid in all directions and mounted solidly. Pulling point can be no more than 1 1/2 iches from back edge of drawbar. No clevis chains or cables permitted in hitching device. From point of hook to centerline of rear axle shall be no less than 30% of truck wheelbase and shall not slope any greater than 25 degrees to hitch point.
6. The use of hydraulic cycliders to retract and or project a weight box is permitted if:
1. No body restrictions will be in effect for the East Coast Pullers.
2. Maximum length to be 15 feet from center of rear axle to furthest most forward point. Front wheels must be in the center of wheel well. Maximum wheelbase on all trucks is 165 inches regardless of body type. Maximum weight of all competition vehicles is 6200 lbs.
3. Any timing delay devices MUST BE REMOVED from the pulling vehicle.
4. Maximum cubic inch will be 575.
5. Flip top bodies must have escape hatch through roof, or working door.
6.All other rules will follow the PPL Modified 2 Wheel Drive rules.
1. Pro Stock Tractors will weigh a maximum or 10,000 lbs.
2. Super Stock Tractors will weigh a maximum of 9,500 lbs.
3. Super Stock Tractors using Alcohol for fuel:
4. All tractors will have a SFI 47.1 Spec rollover protection. Unless stated otherwise, all other General Rules will apply to East Coast Pullers Combo Tractor class.
ALL OTHER PPL RULINGS (NATIONAL SAFETY COMPETITION RULES FOR EAST COAST CLASSES LISTED ABOVE) CAN BE FOUND AT PRO PULLING LEAGUE RULEBOOK PAGE THESE NATIONAL RULES WILL APPLY UNLESS OTHERWISE SPECIFIED ABOVE.
A: The cycleders themselves internally limit the travel within the allowable 60”. No removable or fixed pins, or external stops, to limit the projection travel.
B: During tech it will be pinned at exact position, and must stay in that position during weigh-in, hitch pad adjustment, and competition.
All other rules will follow PPL Modified 4x4 rules.
A) Will not be larger than 504 cubic inches
B) No overhead cams permitted.
C) Maximum of two (2) turbochargers permitted.
D) Top charger must have two (2) 1/8 inch cables around compressor housing.