Re: NTPA adds new class (no joke)

	NTPA adds new class (no joke) December 12, 2024 02:13AM
The Original Michael Moderator Registered: 07/06/2008 Posts: 1,785	It looks like NTPA added a n/a mod class. I did not see a class weight listed but 521 ci max. Edited 1 time(s). Last edit at 12/12/2024 02:14AM by The Original Michael. Reply Quote

	Re: NTPA adds new class (no joke) December 12, 2024 03:46AM
pullinfan4255	Where does this class run? I've never heard of it before. Reply Quote

	Re: NTPA adds new class (no joke) December 12, 2024 04:01AM
cpr Moderator Registered: 03/19/2018 Posts: 790	It'll be a PA/OH thing. CP Reply Quote

2025 NTPA rules December 12, 2024 06:00AM

Dick Morgan

Moderator
Registered: 03/25/2008
Posts: 1,922

Summary of new rules and procedures approved by WPI and NTPA Executive Board of Directors for 2025
season. The following is a description of all new rules or changes to existing rules. For more details, refer to
the 2025 NTPA Pulling Rules after January 1, 2025
Tractor Drawbar – includes 7,700 lbs. up to 10,000 lbs. – pg.50
 Tractors (including OEM chassis) must utilize a single piece drawbar design, billet steel, incorporating
a minimum 15/16-inch diameter pivot pin located on same plane as the point of hook.
 No interference to anti-unhook device welded to nose of sled hook while vehicle is hooked to the
sled or when hook is inserted or removed from drawbar.
 Top and bottom of drawbar must be flat the entire length, no step up or down ahead of 3 ¾-inch
long by 3-inch wide hole for hook.
 Any request to machine drawbar or bottom of rear differential housing to increase drawbar height
must be submitted to NTPA Technical Services for approval.
Drawbar Measurement – pg.29
 Drawbar to be measured using a NTPA approved drawbar stand on a hard, flat surface as level as
possible. Concrete pad is preferred as recommended to promoter. Scale is also an acceptable
measuring surface if long enough and level to measure drawbar accurately using drawbar stand.
 Tire air pressure can be altered and drawbar can be lowered after the drawbar is measured but all
vehicles are subject to drawbar check after competition.
 Drawbar re-measurement after competition pull is at the discretion of the Event Manager or Head
Official.
o TWD Hitch Locking Device rule remains as currently written.
o Rule requiring drawbar adjustment on pad 3 to 5 vehicles ahead of hooking is deleted.
Modified – Supercharger Overdrive (Pro National / Regional National levels) – pg.97
 Any engine equipped with a wedge type cylinder head that does not accept a stock OEM intake
manifold bolt pattern, excluding Big Chief wedge type cylinder heads, allowed up to a maximum of
60.0% supercharger overdrive ratio.
 Engines with Big Chief wedge type cylinder heads, overdrive will remain at 42.0% overdrive ratio.
 Engines with wedge type cylinder heads that accept a stock OEM intake manifold bolt pattern,
supercharger overdrive will remain at 70.0% overdrive ratio.
Pro Stock 5.0 and 4.1 – Tires – pg.81
 Mitas or any 24.5 x 32 brand tire approved for NTPA competition is allowed in Pro Stock 5.0 and 4.1
divisions at Region and State levels
 No limit on number of lugs on any approved tire used in these divisions
Pro Farm – Recast Cylinder Head – pg.102
 Engine cylinder head must be OEM style (recast steel cylinder heads allowed) for brand of engine and
retain stock dimensions (ie. height, width, and length). No billet cylinder heads allowed.
 Bolt patterns of OEM cylinder head must be retained including:
o Intake and exhaust manifolds
o Head bolt pattern
 OEM manifolds must fit cylinder head without modification
 No overhead cams allowed. Maximum of two (2) valves per cylinder.
Modified FWD Trucks – Tire Circumference – pg.82
 Any tire used in Modified FWD division is limited to 112-inch maximum circumference when
mounted on rim after cutting.
 Tire circumference to be measured as installed on pulling vehicle in ready to compete condition using
NTPA template.
Pro Street Diesel 4X4 – 2.6 Trucks – Drivetrain – pg.106
 When OEM drivetrain utilizes a manual type clutch, the OEM clutch housing must be shielded with a
made to fit SFI 4.2 rated blanket.
 Blanket must be constructed the same as a SFI 4.2 Tractor Blanket with 4 straps that are fastened
forward to keep blanket tight to rear of engine block.
 Option: OEM drivetrain can be replaced with a Modified FWD Truck type drivetrain including a SFI
bellhousing, SFI approved clutch, driveline shielding, along with required safety hoops and tethers.
 Reference to Modified FWD driveline rules relate to drivetrain only and does not infer any change to
chassis rules. Cab, truck box, and chassis must remain as currently required.
Super Stock FWD – Engine Mounting, Front Axle – pg.104
 All engines must be placed no further forward than 12 inches rearward of front axle center line to
rear face of engine block.
 Any OEM, military, or automotive/truck type replacement front axle is acceptable in this division.
Pro Stock 4X4 Truck 3.0 – Cab Floor Pan – pg.107
 Rule c. is deleted – floor pan in cab is not required.
Diesel Super Stock Tractor – Fuel Injection Line Length – pg.87
 All fuel injection lines must be a minimum 24 inches in length from injection pump to injector
Diesel Super Stock Tractor - Crankcase Pressure Relief Device – pg.72
 Two aluminum burst panels approved by NTPA must be mounted to side of oil pan, as high above oil
level as possible, using standard burst panel frame.
 Approved burst panel must be installed as a single thickness into each frame as received from
supplier. No repair or modification to burst panel allowed.
 Only approved manufacturer is Bonnifante. Distributor for NTPA crankcase burst panel will be
designated by NTPA Technical Services.
 Contents from burst panel must be deflected downward using a commercially available burst panel
deflector that fits the burst panel frame and covers the entire burst panel. Deflector cannot be
fabricated.
 Engines equipped with a steel oil pan are exempt from crankcase pressure relief device requirement.
Supercharger Burst Panel Deflector – pg.80
 A burst panel deflection shield (commercially available only) must be placed in front of any
supercharger burst panel whenever a fuel system component(s) are located directly in the path of
contents escaping the burst panel.
 Fuel System components include but not limited to fuel lines, connection blocks, valves, fuel tank or
vent.
 Deflection shield must cover the entire area of the burst panel and be enclosed on both ends.
 Contents from burst panel must be deflected upward.
 Deflection shield cannot be fabricated, but must be obtained from an aftermarket supplier and
installed as intended by supplier, no modifications.
Diesel Engine - Turbocharger Compressor Housing Blanket – pg.84
 Any turbocharger mounted directly to exhaust manifold or bottom (high pressure) turbocharger on a
multi-turbo setup in a diesel engine application must have a NTPA approved blanket that completely
encloses compressor housing.
 Blanket must contain a minimum 5 layers of Kevlar.
 Blanket displaying a SFI 4.1 certification is accepted but not required.
 Turbocharger compressor housing blankets are accepted by NTPA from the following manufacturers:
o Taylor Motorsports Products
o Stroud Safety
o Ram Jet
NEW - SFI Identification Access – pg.73
 Any SFI certification tag or decal along with any manufacturer's identification or expiration tag or
decal must be easily accessible and openly visible for inspection at any time.
 Components such as SFI bellhousing, SFI 4.2 clutch housing blanket, and SFI 4.1 automatic
transmission blanket and etc. are examples of this requirement.
 Removal of a panel or shield for clear visibility is acceptable.
Aftermarket Blocks – (tractor and diesel truck divisions) – pg.55
 Aftermarket billet or cast aluminum engine blocks are limited to Light Super Stock Tractor and Super
Stock Diesel 4X4 Truck divisions.
 Open Super Stock, Diesel Super Stock, Heavy Super Stock, Pro Stock, and Pro Stock 5.0 - cast steel or
billet steel blocks only, no aluminum.
 Pro Stock 4.1 - cast steel or billet steel only, no aluminum.
o OEM head bolt pattern and OEM head gasket must be used.
 Light Pro Stock, Super Farm, and Hot Farm - cast steel only, no billet steel or aluminum.
o OEM head bolt pattern and OEM head gasket must be used.
NTPA Stamp – General Rules – pg.39
 Notice: Any flywheel or component engraved with NTPA stamp is not recognized as an approved
component for NTPA competition.
Hypermax Fuel Injection Pumps – pg.54
 Hypermax approved injection pump is an accepted replacement for any Bosch P7100 type pump
application except in Light Pro Stock division
 Hypermax Mark 2 approved injection pump is an acceptable replacement for any Bosch P8600 type
pump application
Breakage and Points Clarification – pg.28, 29
 New rule implemented for 2024 season applied to the second session when a competitor broke
during first session of a multi-session event.
 Last place points for second session are awarded when there are 15 or less total competitors in the
class and breakage occurred in competition during first session. Must pull a measureable distance for
this rule to apply.
 Last place points will not be awarded if entered in a second class and vehicle has not made a
measurable attempt in that division during the first session of competition.
 Competitor must hook in first session in order to earn last place points in a second session for each
division entered.
Hemi Spark Plug Retainer – Safety pg.75
 Any Hemi type engine valve cover that is not equipped with a hold down device (ie. snap ring or billet
ring) for the spark plug tube must install a retaining kit approved by NTPA Technical Services.
 Any Hemi valve cover that uses only the nut on top of valve cover to secure the spark plug tube
requires this device.
 K&I Newberry design has been approved for this purpose. Modern Machine and Tool is a
manufacturer and supplier of kits approved by NTPA Technical Services.
OEM Tractor Tie Bars – pg.72 – rules 3 and 4 edited
 No provision for splitting or separating Tie Bar assembly is permitted. Tie Bar assembly must be
constructed and welded as a one-piece continuous design capable of keeping OEM tractor chassis
horizontal when bolts for splitting tractor are removed.
 Tie Bar material type, thickness, and acceptable design(s) to be determined and approved by
WPI/NTPA Technical Services and Safety Committee.
Semis – Cab Over Trucks (COE) - pg.95
 Note: Cab Over (COE) type trucks are not permitted in NTPA competition at any level
Semis – Drawbar Access – pg.39
 Area 7 inches wide and 5 inches forward from drawbar point of hook extending vertically must be
open and clear of any obstruction including weights, weight boxes, and etc.
Semis – Rear Drive Axles – pg.96
Current Rules
 Rear drive axle must be rigid to the frame in all directions. Axle must not move from main frame of
the truck.
 If tires on rear drive axle lose contact with the ground while hooked to the sled, this is grounds for
disqualification.
Additional Rules
Note: The following competition rules are optional for 2025 NTPA pulling season but will be required for
the 2026 pulling season.
 Both rear drive axles must be mounted rigid to chassis.
 Any form of variable suspension on the front drive axle (air, hydraulic, springs and etc.) is
prohibited in Semi division at all levels of NTPA competition.
 Front drive axle can be mechanically adjusted up or down only. Adjustment must be by
mechanical device (screw, lever, linkage, etc.) located within 1-foot space forward or rearward of
the face of front drive axle tires.
 Suspension adjustment must be locked in place before drawbar is measured and remain locked
until competition run is completed.
 No drive axle adjustment from cab allowed.
Light Limited Super Stock – Chassis Rules Update – pg.99
 Chassis / General (current rule book)
o Front axle suspension is permitted
o Swivel axle front ends are permitted
o Aftermarket transmission is permitted.
 NEW - Chassis / OEM
o OEM tractor chassis is described as having engine, clutch/torque housing, transmission, and
rear axle housing assembly bolted solidly together as one continuous assembly as configured
by OEM.
o OEM tractor chassis built to this configuration must be equipped with a Tie Bar assembly
constructed and fastened to each axle housing and extend forward ahead of clutch and
flywheel assembly. Refer to F. General Rules, Section 19. Safety, sub-section o. Tractor Tie
Bars for complete details.
 NEW - Chassis / Full Frame
o Any 2WD OEM farm tractor manufactured without a continuous cast iron housing from rear
of engine block to transmission or rear differential housing (i.e. 7000 Series JD or Case IH
MX100) will be permitted to remove any OEM driveline components from rear of engine to
OEM rear axle and differential housing.
o OEM farm tractor rear differential and axle housings used must be steel or cast iron and
retained in chassis assembly. Housings must be used as manufactured by OEM. Only
modification for installation of internal aftermarket gears, shafts, or bearings allowed. No
removal of differential housing material for lightening purposes permitted. Only OEM
replacement housings permitted, no aluminum.
o Any tractor with the OEM cast iron tub (belly) type frame or OEM driveline assembly
removed must be equipped with a full steel, channel or tube type frame, bolted to each rear
axle housing with a minimum qty. 4 (four), grade 8 rear axle housing bolts and extend
forward continuously to furthest most point of chassis less any external weight rack, tow
hitch, and etc.
o No provision for splitting chassis apart is allowed. Frame on each side of chassis must be
constructed or welded together as a one-piece continuous design. Chassis design, material
type and thickness to be determined and approved by WPI/NTPA Technical Services.
o Brand of tractor sheet metal must match same brand rear axle housing and engine. (i.e. IH
and Case IH, Ford and HN, and etc.)
o SFI 6.2, 6.3, or 6.4 bellhousing must be installed along with required driveline shielding and
tethers meeting Component Tractor requirements.
o Engine must be mounted no further forward then 60 inches measured from centerline of
rear axle to rear face of engine block. Engine mounting position must follow Component
Tractor requirements found in F. General Rules, section 5. Chassis, sub-section c. Engine
Mounting Position, 1) Component Tractor.
o Tractors that competed in 2024 or previous with cast iron tub (belly) type frame (i.e. Oliver,
White, Cockshutt, etc.) removed, will have until the 2026 NTPA season to mount engine no
further forward than 60 inches from centerline of the rear axle to rear face of engine block.
o If a situation arises concerning safety, a full frame chassis for this division could be
implemented at any time by the WPI/NTPA Executive Boards.
Electrical / Electronics / Ignition Systems – pg.54
 Ignition System:
o Any ignition system that incorporates a means to control/vary/manipulate ignition timing
based on feedback in any form is prohibited.
o Multi-coil (coil on spark plug or near spark plug) systems (ie. Fuel Tech), are accepted in Open
Super Stock, Light Super Stock, and Modified Mini divisions until end of 2025 NTPA Pulling season
where further evaluation and consideration will be given.
o Ignition system and/or components, including ignition module, wiring harness, and
attachments must be utilized in an unaltered manner consistent with the manufacturer’s
installation and instruction manuals unless otherwise approved.
o Ignition control modules (boxes) must not be tampered with in any way. Control module or box
must be factory sealed with no indication that component has been tampered with including
indication of factory installed screw(s) being loosened or gaskets and seals broken.
o Any ignition system that incorporates vehicle performance data via measurement, sensing,
processing, inference, etc., to activate or deactivate any function or capability of the ignition
system is prohibited.
o Any sensor or wiring that connects or transmits vehicle performance data directly, or
indirectly, to the ignition system is prohibited.
o The use of any automated rpm-control device is prohibited.
o Any microprocessor (computerized) ignition components or control are prohibited.
o All wiring associated with the ignition system must be fully visible and traceable.
 Traction Control:
o Any form of automated or computer controlled torque management (ie. traction control) is
prohibited.
o The use of any programmable multi-point rev limiter and/or rate-of-acceleration rpm limiter,
either by themselves or integrated into the ignition system is prohibited.
 Data Recorders:
o Data recorders may be used (as accepted by division) to record engine and vehicle functions
(ie. rpm, temp, pressure, etc.) provided they do not activate or affect control of any function
of the engine or vehicle.
o Fifth-wheel sensing devices prohibited on all vehicles. Includes any additional wheels
contacting the track other than the four wheels and tires for moving the vehicle.
o Engine cylinder pressure sensors are prohibited in all divisions.
o All lines sensing flow, pressure, etc. for fuel or oil must be metallic or steel braided.
o Any transmitting device (mechanical, hydraulic, pneumatic, electrical, optical, etc.) that
assists in determining track boundary or location of competition vehicle on track is
prohibited.
o For data recorder applications, the transmission or display of any vehicle performance data
(ie. wheel speed, driveshaft speed, engine data, etc.) gathered or processed by the data
recorder cannot be broadcast to any remote location or device while under green flag. This
data may be reviewed manually via (download, printout, replay, etc.) only after the run is
complete and vehicle is off the pulling track and clear of runout area.
C. Disqualifications – pg.36
 7. Penalties
Penalties for illegal vehicles shall be as follows:
a. Illegal engine, drawbar, ignition, traction control, data recorders, and cubic inch violations shall
result in a penalty of up to loss of all points accumulated for the competition season by that
NTPA license numbered vehicle and suspension of membership for up to five (5) years and ten
(10) days for the driver and owner of that vehicle. Penalty applies whether or not the owner is
the driver of the vehicle. Upon appeal by competitor or owner and review, final penalty
determination is at the discretion of WPI/NTPA Executive Boards along with WPI / NTPA
Technical Services.
Pro Stock 4.1 – Turbocharger – pg.102
 Turbocharger
a) Turbocharger limited to 4.100-inch air inlet smooth bore housing (no MAP ring). Exhaust
outlet limited to 4.500-inch diameter exhaust restriction to be measured at the face of the
wheel. Both intake and exhaust wheels must protrude into their respective housing.
restriction by .125-inch minimum. All exhaust must exit through the 4.500 inch bore.
b) Maximum distance from compressor housing mounting flange to face of air inlet opening =
4.600 inches.
c) Minimum distance from face of air inlet opening to face of compressor wheel – .375-inch.
d) Compressor wheel retaining device required at face of compressor housing intake opening
before the air damper.
e) Retaining device must be installed as manufactured and supplied by turbo manufacturer.
f) Retaining device must be a single piece design machined from billet steel or aluminum – no
multi-piece welded assemblies.
 Turbocharger Pressure Pipe Blanket
a) Pro Stock 4.1 turbochargers, the turbo pressure pipe between the turbocharger and the
intake manifold must be wrapped 360 degrees with a NTPA accepted blanket.
b) Blanket must be placed as close to turbo outlet neck as possible and extend at least 6 (six)
inches beyond the first bend in pipe or a minimum blanket length of 18 inches, whichever is
longest.
c) Any pressure pipe shorter than 18-inches must have blanket covering the entire length of
pipe.
d) Blanket must be manufactured with a minimum of 5 (five) layers of Kevlar.
e) Blanket displaying a SFI 4.1 certification is accepted but not required.
f) Blankets manufactured by the following suppliers are accepted:
 Taylor Motorsports Products
 Stroud Safety
 Ram Jet
g) Blanket is mandatory in the Pro Stock 4.1 division for 2025 NTPA season.
 NEW - Hot Rod Big Block Tractors
All OEM tractor chassis rules, including shielding, safety, and SFI requirements apply to this class plus
the following rules.
Engine:
a. Maximum engine displacement: 521 cid.
b. Engine must be naturally aspirated V-8, no turbocharger or any type of forced air induction.
c. Engine block and cylinder heads must be cast iron.
d. Single carburetor, no fuel injection of any type.
e. No tunnel ram, sheet metal, cast sheet metal, welded, or fabricated aluminum intake
manifolds allowed. Aftermarket aluminum intake manifolds are permitted.
f. Spark plug deflectors are required to divert the spark plug downward.
g. No engine driven cooling fans, electrically driven cooling fans only.
h. Crankshaft harmonic damper must be SFI 18.1 rated with crankshaft retaining bolt.
i. Air cleaners must be under tractor hood.
j. Diesel engine conversions are allowed but must run on gasoline only
k. Maximum engine RPM: 7200rpm – maximum 50rpm tolerance.
l. MSD ignition box required with maximum 7200rpm chip installed or a limiter box.
1) No switches or dial operated devices that can control engine rpm from the driver’s
seat.
2) MSD box cannot be tampered with or modified in any way.
3) Rivets must be original and factory installed.
4) If sealant or sticker are broken, MSD box must be replaced.
5) Only wiring per the MSD diagram is allowed and clearly visible.
6) No additional wires can be attached to the MSD factory wires other than what is
specified per MSD’s wiring diagram.
7) Tech inspection performed using MSD model 89952 RPM Module/Chip Tester, MSD
model 8998 Digital Ignition Tester, and/or Datalog Peak Performance Recorder P/N
2347.
8) All tractors must have a Datalog RPM Plug Kit P/N 3316.
9) MDS boxes must be located for easy access and inspection by Tech Official.
Fuel:
a. Gasoline only measuring a maximum specific gravity of 750.
b. No alcohol, ethanol, or oxygen enhancing agents allowed.
Electronics:
a. Use of Datalogger and MAP sensors are not permitted.
b. Use of Electronic Control for ignition timing ie. (MSD 8973, Power Grid, Six Shooter, MSD
Digital, and Davis Electronics) is not allowed.
c. Engine must be controlled directly by manual throttle utilizing a mechanical lever and
linkage or cable only.
Sheet Metal:
a. Any farm tractor sheet metal is allowed.
b. Sheet metal must be stock appearing in dimension, must be in stock location as original as
measured from the centerline of the rear axle.
c. Fenders are required but do not have to match the sheet metal used. Fenders can be
fabricated.
Chassis:
a. Maximum overall length: 12 ft. measured from center of the rear axle to furthest point
forward including weights.
b. Maximum tractor wheelbase: 102 inches.
c. Frame rails, front end, and front axle assembly can be fabricated.
d. Front tire tread must overlap the tread the rear tires.
e. Tractor must have Tie Bars unless equipped with a full frame rail on each side of the tractor
starting at the rear axle housing and extending forward to the furthest part of the tractor
excluding any weight brackets, tow hitch, and etc. Refer to F. General Rules, section
19.Safety, sub-section o. Tractor Tire Bars for complete details.
f. Tractor with cast iron tub removed must have a full frame rail on each side of tractor.
g. Steering may be rack and pinion or hydraulic.
h. Swivel front axles and suspension are allowed.
i. Engine must be parallel to the input of transmission and be mounted in center of frame.
Drivetrain:
a. All tractors in this division must be equipped with a block saver plate along with a SFI 6.2,
6.3, or 6.4 rated bellhousing. See F.General Rules, section 3.Bellhousings, sub-section c.
Bellhousing Attachment for more details.
b. Flywheel and clutch assembly must be SFI 1.1 or 1.2 rated.
c. SFI 4.2 Tractor Blanket is not an acceptable replacement for the required SFI bellhousing.
Transmission / Differential:
a. Rear axle/differential can be an agricultural tractor type OR a planetary type rear axle with a
truck type differential center section.
b. When a planetary type rear axle with a truck type differential is used a full frame on each
side of the tractor is required.
c. Internal modifications to the stock transmission are allowed.
d. Aftermarket transmissions are allowed.
e. No automatic or power-shift transmissions allowed.
f. No TA’s allowed.
g. OEM torque housing and transmission can be removed if option to unbolt from rear
axle/differential housing as designed from the factory.
h. Rear differential lock is not permitted.
i. Refer to F. General Rules, section 10. Drivelines, Driveline Shielding, Tethers for details
related to driveline safety requirements.
Competition:
a. Hot Rod Big Block Tractor are allowed to compete in their own division only at Region and
State levels of NTPA competition.

Edited 1 time(s). Last edit at 12/12/2024 06:45AM by Dick Morgan.

Reply Quote

Re: 2025 NTPA rules December 19, 2024 12:24AM

Junior

The cast iron head rule is a bad idea. Dart and RHS/Pro Topline/ EQ are no longer being made. World Products is the only on now and they cost just as much as a 24* aluminum version by the time you have them all worked over. Ford head the only one with limited production is the F460 from Eliminator Products. Mopar probably Indy Cylinder Head if they still produce them.

Should be any aluminum 24* head for Chevy, the Trickflow A460 for Ford and the Brodix non MC for Mopar. Easy to police and readily available.

Also there are at least 5-6 organizations just in the Midwest with DOT tire NA trucks that number in at least the 20-30 range. How about adding that. Another Mod tractor class!

Reply Quote

	Re: 2025 NTPA rules December 19, 2024 02:19AM
Pullinfan4255	You say its easy to police, but on a 24 degree chevy how do you check valve angle easy? That's a BS line chevy guys use to get the upperhand on the other makes, I agree with you on the cast iron only rule being stupid, but a 24 degree rule is too. Apparently the NTPA has never heard of the EX514 ford cylinder head, ask the Outlaw NA2wd guys about that one lol. Reply Quote

	Re: 2025 NTPA rules December 19, 2024 03:03AM
Junior	Any Chevy head that isn't 24* is very easy to police they are entirely different on valve covers, intake manifold and how they are on the block. The EX514 which is an A460 head is 75hp better than the best 24* head iron or aluminum. Reply Quote

	Re: 2025 NTPA rules December 19, 2024 03:10AM
Junior	A 521" Ford with EX514 heads will make 1100hp minimum. Chevy heads factory are 26* the aftermarket version is rolled 2*. The EX514 and A460 are also rolled on the exhaust and they have raised ports. Factory Ford heads do not have raised ports. The Chevy guys do not have the advantage. Rules made by people that have no idea what parts are available or what they are capable of. Reply Quote

	Re: 2025 NTPA rules December 19, 2024 05:00AM
patches Registered: 04/04/2008 Posts: 1,766	It's from when the fpp class split,the fpp are 6000 rims with now aluminum heads,the central ohio group is 7200 rpm cast heads..this class has split/changed alot over the last 30 years.every split the numbers get less Reply Quote

	Re: NTPA adds new class (no joke) December 16, 2024 05:28AM
Shell Answer Man	Interesting, no tire size max either. At least they don't have to run Ag rear ends. But they are pretty short. And they don't want the oem "sheet metal" longer than stock. Is Q16 gas legal? Reply Quote

	Re: NTPA adds new class (no joke) December 16, 2024 05:40AM
cpr Moderator Registered: 03/19/2018 Posts: 790	Tires are an omission. 18.4x38 max. Fuel is in rule 9 A & B. CP Reply Quote

	Re: NTPA adds new class (no joke), to cpr December 16, 2024 07:48AM
Shell Answer Man	Says diesel conversions are legal, must run gas. DT466 is under cubic inch limit. The way I read the rule, an I-6 is legal. Doesn't say it is not anywhere in the rules. Reply Quote

	Re: NTPA adds new class (no joke), to cpr December 16, 2024 07:56AM
Shell Answer Man	My bad, it does state V-8. Reply Quote

	Re: NTPA adds new class (no joke), to cpr December 16, 2024 09:12AM
cpr Moderator Registered: 03/19/2018 Posts: 790	Wouldn't a Perkins 510 with some sparkplugs be freakin' awesome though? CP Reply Quote

	Re: NTPA adds new class (no joke), to cpr December 16, 2024 12:55PM
Shell Answer Man	Yes, a Perkins would be very cool! Reply Quote

	Re: NTPA adds new class (no joke) December 16, 2024 06:33AM
bbailey Registered: 02/23/2012 Posts: 590	I don’t see a weight limit either? Wonder why they won’t allow an inline 6 , that would keep it interesting and allow a lot of existing tractors to compete? Reply Quote

	Re: NTPA adds new class (no joke) December 16, 2024 07:23AM
cpr Moderator Registered: 03/19/2018 Posts: 790	V8 Hot Rod has been around a long time. What I6 tractors? That's not a thing for this class. CP Reply Quote

Re: NTPA adds new class (no joke) December 16, 2024 01:43PM

roots

NTPA has come full circle back to its early founding roots. They now sanction LLSS, Classic Super Stock, Hot Farm and now Hot Rod v8 Mods. In some regards, could even say those SSFWD trucks.
As their once premier large SS classes, especially SSD, has lost an immense amount of pullers (memberships), NTPA replaces it with coming back to their original roots classes, of course in today's modern form.

Reply Quote

Re: NTPA adds new class (no joke) December 17, 2024 07:28PM

Tomah Winner

I see they are not allowing cab overs anymore in semi competition. Also, what is the need for both rear axles to be rigid to the frame? Was cheating involved, or did certain pullers have an advantage based upon their type of truck? I'm not understanding that part. Not a fan of the new drawbar rule.

Finally, doesn't the NTPA have ENOUGH CLASSES?! I'm not saying there is anything wrong with this new addition, but is this new addition because of a rise in popularity of this class, or are they just trying to add more numbers to their association? I saw the NTPA banquet, only 6 (technically 5) member states, and they lost another one this year. Kinda sad. Sorry, not sorry for what I said.

Reply Quote

	Re: NTPA adds new class (no joke) December 18, 2024 02:38PM
who	Tomah winner, what state pulled out of NTPA? Reply Quote

	Re: NTPA adds new class (no joke) December 18, 2024 04:17PM
Logan Thomas Registered: 02/23/2017 Posts: 157	Florida..... Reply Quote