2024 CRATE LATE MODEL:
Double file re-starts for the 2024 season:
RACECEIVER REQUIRED
All cars must have a fully charged 2 lb. fire extinguisher mounted within reach of the driver. FIRE SUIT, GLOVES AND SHOES.
LIGHT STICKS ARE NOT ALLOWED. NO OTHER RADIOS OR COMMUNICATION EQUIPMENT SUCH AS PHONES, MIRRORS ALLOWED AT ANY TIME.
BODY RULE: Same as super late model.
May run 8 in. spoiler and braces.
602 CRATE Weight 2200 LBS. at all times.
B – ENGINE RRULE:
GM CIRCLE TRACK CRATE ENGINE, OR PROMAXX PERFORMANCE 351W FORD CRATE ENGINE PERMITTED.
ALL STEEL ENGINE.
- P/N 88958602 “602’’
Factory Engine Specifications – NEW Horsepower 350 @ 5000 rpm
Torque 390 @ 4000 rpm
Bore 3.998” (+/.001”)
Compression Ratio 9.1:1
Block Type Cast Iron
Casting Number See Note Below
Deck Height 9.025 (+/-.001”)
Crankshaft Type Cast Iron Crankshaft Casting Number 14082586 Crankshaft Seal Type 1 piece
Crankshaft Weight 55.3 lbs.
Piston Type Cast Aluminum
Diameter 3.996”
Valve Relief Type 4Reliefs
Piston Crown Dished
Piston Weight 594 grams
Connecting Rod Length 5.7”
Connecting Rod Weight 604.15 grams (+/-10.0 grams) Camshaft Type Hydraulic
Camshaft lift (int/exh @ value) .435”/.460” Camshaft Lobe Lift (int/exh) .290/.306 Duration @ .050” (int/exh) 212/222
Cam Lobe Centerline 112.5 degrees
Rocker Arm Type Stamped Steel
Rocker Arm Ratio 1.5
Head Gasket Type Composite/Steel
Thickness 0.028
Cylinder Head Type Iron Vortex
Casting Number 12558062
Valve Size int/exh 1.94”/1.50” Combustion CC’s (+/-1-2 cc) 64
Intake port CC’s (+/-1-2 cc) 170
Exhaust Port CC’s (+/- 1-2 cc) 60
Normal Oil Pressures 40 psi. @ 2000 rpm NOTE: 602 Engines have casting #’s10243880 OR 14093638
FACTORY ENGINE SPECIFICATION P/N 88958604
New Honeycomb Valve Springs permitted Factory
TOTAL LIMIT AMOUNT WEIGHT BREAK FOR ALL SAFETY AND EXHAUST IS 50 LBS MAX
604 CRATE WEIGHT 2300 LBS. AT ALL TIMES
HORSEPOWER 400 @ 5500 RPM
Torque 400 @ 5500 rpm
- Bore 3.991” – 4.001” ( +/-.008)
Compression Ratio 9.6:1
Block Type Cast Iron
Casting Number 102433880 - Deck Height 9.025” (+/-.001” )
Crankshaft Type Forged Steel
Crankshaft Casting Number 10243880
Crankshaft Seal Type One Piece
Crankshaft Weight 55 lbs.
Piston Type Hi-Silicon Aluminum
- Diameter 3.996”-3.999”
Valve Relief Type 4 Reliefs
Piston Crown Flat
Piston Weight 533 Grams
Connecting Rod Length 5.7”
Connecting Rod Weight (+/-10.0 grams) 604.15 Grams
Camshaft Type Hydraulic Roller
Camshaft Lift int/ext measured @ value .474”/.510”
Camshaft Lobe Lift (int/exh) .316”/.340” 22. Duration @.050” (int/exh) .208/221
Camshaft Center Line 112 degrees
Rocker Arm Type ALUM.ROLLER Rocker
Rocker Arm Ratio 1.5
Head Gasket Type Composite
Thickness 0.051
Cylinder Head Type Aluminum
- Casting Number 12367712
- Valve Size 2.00”/1.55”
- Combustion Chamber CCs(+/-1-2 cc) 62
- Intake Port CCs (+/-1-2cc) 205
- Exhaust Port CCs (+/- 1-2cc) 77
ALL OTHER ENGINE SPECIFICATIONS REFER TO GM MANUAL
OPTIONAL GM
ENGINE 2400 lbs. 8” SPOILER BLOCK:
OEM Cast iron V-8 block only.
Maximum cylinder bore size, Chevrolet 4.060, Ford 4.060, Chrysler 4.060.
After-market steel splayed main caps permitted.
Main cap studs and straps permitted.
Deburring block and plugging deck to strengthen block permitted.
Plug or vent and screen oil drain holes in lifter valley permitted.
May surface block.
Lifter bore must be OEM diameter for engine. Chevrolet .840, Ford .875, Chrysler .901.
CRANK:
Any steel crank with the exception of (NO Pendulum Undercut counterweights and titanium or other Exotic materials.) (NO KNIFE EDGING OR LIGHTENING OF CRANKSHAFTS!)
Must be standard stroke for engine, Chevrolet 3.480, Chrysler 3.580, Ford 3.500
NO stroking or de-stroking of crank.
May balance engine.
50 lb. minimum weight on crankshaft.
RODS:
Steel rods only.
NO titanium or aluminum rods.
PISTONS:
Any flat top pistons and pins.
NO dome pistons.
CAM:
- Flat Tappet Cam ONLY.
LIFTERS:
Lifter retaining tray permitted.
Lifter must be OEM diameter for engine. Chevrolet .840, Ford .875, Chrysler .901
HEADS:
These are the only heads permitted.
OEM cast iron straight plug heads, Chevrolet Bowtie cast iron heads, Chevrolet Bowtie Vortex cast iron heads, Dart Iron Eagle cast iron SR heads.
All heads must remain AS-CAST.
60 cc limit.
Valve angle and spacing must remain original production specs. For heads being used.
Steel valves only. (NO titanium valves)
Valve size maximum for (B) engine, Intake – 2.020, Exhaust – 1.600.
Valve stem diameter 11/32 minimum for all engines.
Under cut stems permitted, any type guides.
Any valve springs, retainers and keepers.
Guide plates, screw in studs and stud girdles permitted.
Roller rocker arms, no shaft mount rocker arms
NO porting or polishing all heads must remain AS-CAST.
NO port matching intake or exhaust runners.
Racing valve job permitted Machine cuts only.
NO blending valve job to casting.
NO deburring intake or exhaust runners.
TIMING CHAIN:
- Any chain and gears, NO gear or belt drives.
WATER PUMP:
Cast or aluminum permitted.
NO electric water pump.
OIL SYSTEM:
- Wet sump systems, internal pump only!
FUEL PUMP:
- NO ELECTRIC FUEL PUMPS
OPTIONAL FORD AND DODGE CRATE ENGINE: WEIGHT 2350 LBS. 12″
SPOILER APPROVED. FORD AND DODGE CRATE ENGINE WILL BE ALLOWED TO PARTICIPATE IN THE CRATE CLASS BUT MUST BE SEALED WITH FACTORY SEALING BOLTS AND HAVE SPEC SHEET AVAILABLE FROM FORD OR DODGE MANUFACTURER ADDRESSED TO THE RACETRACK! MUST BE APPROVED BY TECH INSPECTOR AT RACETRACK!
CARBURETOR:
One four-barrel carburetor only of any manufacture.
NO turbo-chargers, blowers or fuel injections.
All engines must be naturally aspirated.
One-inch carburetor spacer allowed. One Piece Spacer .040” Tolerance Two Paper Gasket .070” Thick each. (604 Engine)
Two-inch carburetor spacer on 602 engines.
WATER PUMP:
- No electric water pump.
FUEL PUMP:
- NO electric fuel pump.
DISTRIBUTOR:
- Any HEI factory distributor OR MSD Type Only.
ENGINE SETBACK:
Engine setback will be 6” inches from center of top ball joint to the most forward spark plug. 1-inch tolerance on engine setback.
Engines may be crossed from one manufacturer’s line to another Example: Chevrolet in a Ford, Pontiac, etc.
FRAME:
All frames must be of steel construction.
Square or rectangular frame must have a minimum of 2” by 2” material, .083-wall thickness.
If round tube frame, tubing must have a minimum of 1-3/4” outside diameter, .083 wall thickness.
Aluminum body or canister shocks allowed.
WHEEL BASE:
- Minimum wheelbase will be 103” inches.
ROLL CAGE:
All cars must have a suitable steel roll cage protecting the driver’s compartment, including headrest.
Side roll bars are mandatory and must extend into the door panels. A minimum of three (3) bars must be used on the left side.
Each bar must be at least 1- ½” in diameter, with a minimum material thickness .083”.
Roll cages must be welded to frame.
BODY:
Same as Super Late Model specs.
NO mirrors, radios or communication equipment allowed in car at any time.
SAFETY:
All cars must have 3” inch seat belts with shoulder harness and must be attached to roll cage. And must be worn at ALL times.
We strongly recommend that all cars have an approved fire extinguisher system, securely mounted, within easy reach of the driver.
A 5 lb. Halon System is recommended.
All drivers must wear a complete fire suit.
NUMBER:
Number must be at least 18” inches high and on both sides and top of car AND MUST BE LEGIBLE. All cars must have a number.
EXHAUST/MUFFLERS:
MUFFLERS 25 LBS WIEGHT BRAKE
Dirt Pro Muffler or Borla Muffler.
NO modifications and/or alterations to mufflers will be allowed.
Collector type headers required.
All cars must register under 100 decibels.
NO deliberate air leaks, vents, holes, etc.
Any car that loses a muffler will automatically be disqualified.
BRAKES:
Four-wheel disc brakes permitted.
NO carbon fiber brake parts permitted.
FUEL CELL / FUEL:
An approved fuel cell (32-gallon maximum) must be securely mounted in the trunk area of the car, inside a .20-gauge metal box supported by a minimum of two 2” inch by 1/ 8” inch steel straps.
All fuel cells must be completely visible from rear of car.
Fuel cell must not be mounted lower than bottom of quick-change rear end.
Gas only – NO alcohol – NO nitrous oxide, nitro methane or other nitrate additives.
NO propylene oxide.
Gas must not check above + 5 or – 5 on electronic fuel checker when calibrated with tracks racing gas.
Gas must pass acid test.
TRANSMISSION:
Must have at least one forward and one reverse gear in working order.
NO straight drives or in and out boxes.
WHEELS:
Any brand or type of wheel allowed must be mounted with lug nuts.
NO knock-off or center locks wheels.
Maximum wheel width – 14” inches.
TIRES:
Right Rear Only: 55’s,56’s, 1600’s and 4″s. Left Rear 21’s; 1350; 55’s; 3’s; Hoosier 1600’s; American Racer 48’s or 56’s. Fronts Open.
Tires must have all numbers and name on the tire No grinding off of numbers or names, any tire that has been altered will be illegal.
No tire softener, tires will be randomly checked before and/or after race and must punch minimum of 48 (hot or cold) on track durometer.
Tires available at the Track (256) 623-RACE (7223).
Any item not listed in protest fees is considered a visual protest item and must be protested before race and not after.
Any crate engine protested must be reassembled and resealed by one of the Authorized Repair/Rebuild Centers.
PENALTIES FOR CRATE ENGINE INFRACTION
1ST Infraction
PROTEST FEES:
$350.00 One Head (2 valves will be pulled)
$250.00 Oil Pan
$300.00 Flywheel and Clutch
$100.00 Engine Setback
$100.00 Gas
$150.00 Rear End
$250.00 Intake
Any sealed Crate Engine will be $1500.00 to tear down, Will pull complete motor and take to approved Engine Builder.
Disqualification of race, = 0 points, $0.00 in prize money won during the race, 30-day suspension from Fort Payne Motor Speedway and a $300.00 fine.
The $300.00 fine must be paid before you can return to competition.
2nd Infraction
Disqualification of race, = 0 points, $0.00 in prize money won during the race and suspension from Fort Payne Motor Speedway for the remainder of the current season.
For questions contact Fort Payne Motor Speedway at: (253) 623-RACE 7223 Colt Kelly (256) 677-3859, Destin Purvis (407) 306-8343; TJ McCoy (256) 570-4192
Track reserves the right to delete, change, or amend rules in the interest of competition.
2024 FORT PAYNE MOTOR SPEEDWAY ALL RIGHTS RESERVED.