Modified racing is returning to Wiscasset Speedway as a regular bi-weekly division! Fans & Drivers have expressed great love for these cars ever since they were introduced by Tom Mayberry during his leadership of the Speedway. We encourage all those who have a Modified parked in the barn or have always had a desire to build one – come and join the fun. The initial rules have the basic structure of Tom Mayberry’s very successful PASS rules along with changes received from the driver meetings. We understand the rules are not perfect, but please come, have some fun and together we can build another great racing division at Wiscasset Speedway!
12/1/17 Rules Set. In regards to bump stops allowed vs not; further study will be held as the season gets underway to effort to prove or disprove the various thoughts, theories & opinions.
EMAIL = WISCASSSETSPEEDWAYTECH@GMAIL.COM
DRIVER SAFETY REQUIREMENTS – drivers must wear the following required items at all times while on the racing surface.
- One or two piece long sleeve SFI approved fire resistant suit in good condition and free of rips, tears or holes.
- Fire resistant shoes and gloves.
- Helmet must meet or exceed the Snell 2010 standard.
- Face shield, glasses or goggles.
Highly Recommended & Encouraged not yet required but you know it’s coming 😊
- Head and neck support/restraint safety device.
Recommended not required
- Fire resistant underwear, socks, and head stocking.
RACE CAR SAFETY REQUIREMENTS
- Any bar within the drivers reach must be padded with an approved product. Pipe insulation will not be acceptable.
- All welds are to be of high quality and must completely surround the joint. Absolutely no butt welds or sharp edges anywhere.
- Electric kill switch required within easy reach of the driver. Switch must say “ON” or “OFF”.
- Mirrors are allowed and are not to be used for blocking purposes.
- Collapsible steering column highly recommended. A fabricated steering column must have a minimum of two (2) U-joints positioned so as not to allow the steering wheel to be pushed rearward in the event of a collision. Must have steering column stop. Steering wheel may be replaced with a removable made for racing unit. Steering wheels must have a center pad.
- Only one (1) battery permitted – maximum sixteen (16) volts. Must be securely mounted outside the driver compartment.
- Fuel cells are required – maximum twenty two (22) gallons – and must be completely enclosed in a steel container with a rollover valve in the cell or vent line. Steel container to be secured with a minimum of two (2) eighth (1/8) inch by two (2) inch steel straps. Fuel cell must be protected in rear of axle by roll cage tubing mounted securely with no part of the fuel cell lower than the protective tubing. Fuel cell guard pipe must be lower than fuel cell installed height. Must be a minimum of eight (8) inches from track surface. Fuel cell vent must have roll over valve in cell or in line.
- All fuel filters must be of metal construction. No plastic, glass, or any other material will be allowed.
- Any line containing a combustible material must be steel and routed outside of the driver compartment.
- Electric fuel pumps must be wired through a low oil pressure cut off switch.
- Belts must be racing type quick release consisting of lap belt, shoulder harness and sub strap. Belts must be a minimum of three (3) inches and no more than five (5) years old. Drivers utilizing neck restraint devices are permitted two (2) inch shoulder straps with all other straps being required three (3) inch. Belts with no dates shall be considered too old. Belts properly mounted to welded steel plates and not through tin, aluminum, floor or bulkhead.
- Aluminum racing seat with right and left head supports. Seat must be mounted and attached securely to the cage. A support brace must be installed at the rear of the seat.
- Racing regulation window net with quick release attachment required to be securely installed on driver side window. Plastic, plastic brackets, tape, wire or any other makeshift window net creation and/or mounting devices will not be acceptable. Window nets must be securely fastened at all times when car is on racing surface.
- Minimum five (5) pound fire extinguisher mounted with quick release metal bracket within reach of driver when belted in. Extinguisher must be operational with full gauge reading. Plastic brackets, tape, wire or other makeshift mounting devices will not be acceptable.
- Bodies to be American passenger cars only –ie – Tempo, Cavalier, Mustang, Daytona, Gremlin, etc. No panel vans or station wagons.
- Roof must be full size.
- Must have full, half or capsule type Lexan windshield. If using half or capsule type option, a guard must be installed on passenger side.
- Rear window area must remain open. Rear quarter windows must be either open or made of clear Lexan. No other side boxing shall be permitted.
- All Chevy motors only may use any body style.
- Suggested bodies: harrisautoracing.com or www.lefthanderchassis.com. Optional “Tour Type” modified body may be permitted.
- Spill boards, vertical or airfoil or any other aerodynamic devices will not be permitted anywhere on the car.
Firewalls and Floorboards
- Firewalls and floorboards mandatory.
- Driver compartment tub to the right and to the rear shall be constructed with a minimum of twenty two (22) gauge steel or .040 aluminum.
- Driver foot box and firewall shall be constructed with a minimum of twenty two (22) gauge steel.
- Fiberglass or metal duplicate of body parts shall be permitted.
- Handmade or aftermarket body parts constructed of steel, aluminum or fiberglass shall be permitted.
- Body parts may not be closer than four (4) inches to the ground.
- No side skirts.
- Right rear quarter panel to be no further than two (2) inches to the inside of the inner sidewall of tire.
- All body panels behind rear axle housing must maintain a minimum of eight (8) inch ground clearance.
Original Roof Line
- Original roof line of vehicle shall be maintained with maximum of two (2) inch drop – rear to front.
- No wings. No airflow devices to direct air allowed. No ground effects allowed inside or outside of vehicle.
- Both side windows must have a minimum of twelve (12) inches vertical opening from front to back.
- Roof height minimum of forty four (44) inches.
- May run spoiler five (5) inch high x sixty six (66) inch wide located at the rear of the deck lip. Top four (4) inches of spoiler must be clear Lexan. Competitors must be able to see through spoiler. Maximum rear spoiler height is thirty nine (39) inches measured from ground to top most edge.
- Maximum door/quarter height is thirty four (34) inches measured from ground to top edge.
- Deck lip not to extend more than forty five (45) inches behind center of rear axle.
- Nose panel may not exceed the width of the front clip utilized.
- Nose forward ball joint location width dimension shall be minimum thirty four (34) inches and maximum forty one (41) inches.
- No part of the car shall have a forward overhang of more than thirty six (36) inches as measured from the front spindle pin forward.
- No part of the body may extend forward of the front bumper.
- Maximum front bumper length not to exceed eighteen (18) inches from mounting point on chassis.
- Front bumper must be mounted frame end to frame end, with bottom loop parallel to the ground. Minimum 1.25 inch pipe able to support car should it be lifted by wrecker.
- Rear bumpers may be constructed of tubing, channel or flat stock, and must protect the fuel cell.
- Center of bumpers, both front and rear, must be eighteen (18) inches from the ground (two inch tolerance).
- Rear bumpers/nerf bars must not extend more than one (1) inch beyond width of rear tires and must not contain any sharp edges.
- Side Bars/Nerf Bars. All side bars should run parallel to the ground and have rounded ends. Sidebars not to extend more than one (1) inch outside of tire.
- Rear bumper tethers or safety cable mandatory and must be attached to both bumper and rear chassis to prevent bumper from being dislodged.
- Engine compartment will remain open. No side panels.
- Hood sides may have a maximum four (4) inch drop and must be enclosed at the rear of hood.
- Bodies should extend no further forward than back of block.
- Rear of bodies to be solid panel at least eight (8) inches high with car number.
- Must consist of continuous hoops not less and one and three quarter (1¾) inch outside diameter and must have a wall thickness of at least .095. Must be frame mounted in at least six (6) places. Cages will be sonic tested if necessary. Main frame rail structure of chassis (defined as the primary structure to which roll cage members, major suspension components, etc.) mount to, must be constructed of a mild steel shape having a minimum perimeter dimension of ten (10) inches. Chassis with stock frame rail extensions are exempt from perimeter dimension on right side of rail.
- Must consist of a configuration of front and rear hoops connected by tubing on the sides or side hoops. Driver’s head must not protrude above cage with helmet on. Roll cage must be securely supported and braced. Top hoop must have crossbar. Minimum height from ground to top of roll cage is forty three (43) inches with three (3) inch frame height.
- Protection of feet is mandatory. Bar across back of engine with vertical bars and rub rails or similar protection.
- No brace bars forward of the main four (4) point cage may be higher than stock hood height.
- Driver door bars must be as parallel with the ground as possible and located perpendicular to the driver so as to provide maximum protection; but without causing difficulty getting in and out of the vehicle. This side bars must be welded to the front and rear of the roll cage members. Door bars less than .095 thickness should have four (4) bars at least one and three quarter (1¾) inch diameter. Driver side door cage must be plated with sixteenth (1/16) inch steel from top door bar down to frame and welded on the outside. Right side three (3) bars or “X” method. If door bars are not plated and car losses panel, you will be black flagged.
- May be offset chassis or straight up.
- Minimum wheel base is one hundred eight (108) inches.
- No tube type clips allowed.
- Maximum fifty eight percent (58%) left side weight.
- Added weight must be securely bolted inside of frame rails, behind front spindles and in front of rear axle. No weight allowed inside driver compartment.
- No more than two hundred (200) pounds of bolt on ballast weight permitted.
- Loose objects must not be used in driver compartment.
- Mounted ballast must be painted white with car number on it.
- All ballast must be lead weight only. Tungsten is not permitted.
- All weight must be attached with a minimum of two and three eighths (2 3/8) inch Grade 8 bolts.
- Factory production full l968 or newer perimeter American passenger car front frame clip only. No tube type front clips allowed.
- Frames may be cut in rear only at a point not further than thirty six (36) inches from center of rear end housing.
- No Jeep, Bronco or four wheel drive frames allowed.
- No front wheel drives.
- Metric frames acceptable.
- Camaro/Nova Clip or Howe Camaro/Impala/Chevelle replacement front clip accepted at weights listed. Howe Camaro/Impala/Chevelle replacement front clip must be in its complete unaltered form. When mounting Camaro/Nova or Howe Camaro/Impala/Chevelle replacement, a minimum measurement from lower control arm to tube frame is twenty four and one half (24½) inches.
- No modifications to clip permitted with the exception of upper control arm mounting, spring pocket boxing for clearance of use of coil over mount shock/spring, radiator clearance and mounting and trimming of forward front cross member for center link clearance.
- Stock clip must extend forward in stock produced form beyond all suspension mounting points to include steering box and idler arm mounting positions. Cars with fabricated “horns” may be subject to an assigned weight penalty.
- No cutting, raising, shortening, etc. of factory front cross member. If yours has been cut, then a solid bar or eighth (1/8) inch thick box plate must be securely welded to the bottom of the cross member to replicate its stock height and dimension.
MAXIMUM TREAD WIDTH
- Maximum tread width front and rear is seventy six (76) inches measured from outside of wheel edge to outside of wheel edge as measured at the bead lip of the wheel.
- Only authorized wheel spacers allowed.
- The front is measured at the front of the wheels, the rear is measured at the rear.
- Tech Inspector gauge is final word.
- Frames may not be widened or narrowed and must be able to support cage on both sides.
- Must be full and complete on both sides.
- Minimum frame height from the ground is three (3) inches. No other part of the car may be lower than three (3) inches.
- Front suspension must be in stock location.
- Heim ends permitted.
- May run tube type ties rods and stock or aftermarket center link.
- Stock passenger car spindles only. No fabricated spindles. No alterations (welding or heating) allowed on spindle arms.
- No Howe cast spindles. Only aftermarket dropped spindles permitted are Bell tech part #2100 and Classis performance part #7078ds.
- Bottom “A” frames may not be altered or moved.
- Lower control arm bushings are limited to stock, steel or neoprene type only.
- No spherical bearing or heim end bushing type permitted.
- Tube type upper “A” frame allowed and may be moved and adjustable.
- Jacking bolts are allowed.
- Conventional coil spring and shock or coil-over suspension allowed.
- Shocks must be steel body and only one steel body shock per wheel. Only shocks with a racer list price of one hundred forty dollars ($140.00) or less is allowed. Any shock utilized must be as manufactured and may be subject to testing by Tech at any time.
- Coil-over suspensions must use coil-over conversion kit.
- No aluminum, titanium or fiberglass suspension or rear end parts.
- Rear frame may be altered to accept leaf, coil spring or coil-over. Any coil spring must be at least four and one half (4½) inches outside diameter.
- No fiberglass lift bars.
- No torsion bars in rear.
- The rear center link may be a solid link or mounted in rubber bushings.
- No hydraulic, ratchet or electric weight jacks anywhere in or on the car.
- No aluminum, titanium or fiberglass suspension or rear end parts.
- Steering box must be OEM. Must utilize 700 series steering box only. No aftermarket design steering box.
- No rack and pinion.
- Must remain within original bolt pattern for type of frame used.
- Pitman arm must be stock or aftermarket similar replacement.
- In cockpit steering may be modified to suit driver, but must be on left side of cockpit.
- No center steering.
- A single in line steering quickener is permitted.
- Sway bar may be stock one (1) piece aftermarket or three (3) piece aftermarket design.
- All components must be steel.
- Rear sway bars are not allowed.
- Weight jacks must be in original centerline with coil springs.
- All bearings are to be OEM production design bearings.
- Rollerized or roller bearings are not permitted unless factory equipped for all individual intended bearing use.
- All springs must be magnetic steel only and not to exceed two hundred dollars ($200.00)
- No aluminum wheels, hubs, “A” frames, spindles or any aluminum suspension parts.
- The only aluminum suspension parts in suspension that are permitted are: Lower spring cups rear, coil-over kit assembly to include cup-nut sleeve, chassis mounted panard and three (3) point bar adjuster, trailing arm tubes, three (3) point tube, front upper control arm cross shaft and tie rod sleeves.
- All rod ends are to be steel.
- Only OEM production type transmissions will be allowed. Three (3) speed or Four (4) speed or automatic. No Five (5) speed. No in and out boxes. No buttons or couplers. Must be clutch operated. Clutch or torque converter must be inside bell housing. Shift with motor running imperative. Multiple disc clutches are permitted. Minimum disc diameter is seven and one quarter (7¼) inches, steel discs and pressure plates only, must mount to back of engine in stock location. Any steel flywheel permitted. Clutch must be mounted inside bell housing. No Jericho type or straight cut gear type transmissions permitted.
- Transmission must have at least two (2) gears forward, one (1) reverse gear and neutral. All race cars must join lineup on demand, unaided, or go to the rear of the race. Fourth (4th) gear must be one (1) to one (1). No other gear may be higher than one point two eight (1.28) in transmission.
- If using stock type clutch, car must be equipped with explosion proof steel bell housing. If using multi disc clutch standard bell housing may be used.
- No aluminum drive shafts.
- Driveshaft must be steel only and painted white.
- Drive shaft loop is required and must be constructed of minimum quarter (1/4) inch x two (2) inch steel. Must be mounted no more than six (6) inches from front of driver shaft.
- Any passenger OEM car type or truck rear end may be used. No aluminum allowed except for lowering blocks or axle cap. No quick change devices allowed. No titanium or magnesium permitted. Locked rear end, spool type only. No ceramic coating of internal rear end or transmission parts. All rear ends must have axle for safety if not floater. Ford nine (9) inch rear recommended. Stock open (non-posi) carrier is permitted, use of steel mini spool is permitted. If you run a floater, you must steel hubs and steel drive plates – no aluminum.
- Stock motor mounts may be replaced with solid mount.
- Motor must be a minimum of seventy two (72) inches from the center of the rear end to the rear of the engine block.
- Engine offset must be kept within two (2) inches of the centerline of the cross member within one (1) inch of center.
- Minimum crank height from center of crank to ground is eleven (11) inches.
GM CRATE ENGINE OPTION
The following will be permitted to qualify as a sealed GM 602 Crate Engine
- GM Crate Engine part #88958602 in full untouched factory from intake to oil pan.
- GM factory sealed engine part # 88958602 with replacement of oil pan with Moroso part #21319 and matching oil pump pick up assembly.
- Freshened GM Engine part #88958602 with Butler/McMaster seals registered with Wiscasset Speedway verifying dyno testing and specification compliance.
- Carburetor Holley #80541-1 650cfm direct bolt to intake. No modifications from factory production other than removal of choke plate and jet size.
NON-CRATE ENGINE OPTION
- Two (2) barrel engine option specifications
- Stock block with maximum .045 overbore production only. No angle milling. Only modifications allowed shall be standard boring and decking.
- Crankshaft is stock production steel only. Stock stroke =/- .020. No knife edging or lightening. Only nominal engine balancing is allowed. Minimum allowable weight is fifty (50) pounds. Rod and main journals must remain OEM size.
- Hydraulic cam and lifters only. Maximum allowable lift is .450 inches measured at the valve.
- Roller bearings not allowed.
- No roller cam/lifters.
- Flat top skirted pistons only. Maximum allowable compression is 10.99 to 1 or 4 valve pocket full skirted pistons permitted. Piston may not protrude above edge of cylinder block surface.
- Stock connecting rods or sportsman type connecting rods only. Stock length for engine used.
- Racing type oil pans only. Wet sump only. Maximum seven (7) quart capacity. Minimum depth of pan from mounting rail to base of pan shall be seven (7) inches.
- Oil pump to be factory stock mounted internal wet sump type only.
- Intake – factory cast iron two (2) barrel or the following Edelbrock performer intakes are permitted –
- GM 2101, 2116, 7116
- Ford 2181.
No porting, polishing or modifications. No chemical porting. Port matching is not permitted.
- Stock production steel cylinder heads only. No bowtie allowed. Heads must remain stock with the exception of the installation of screw in rocker arm studs and push rod guide plate installation permitted. Maximum valve spring outside diameter shall be 1.250 inches. Head must retain stock valve size for casting used. Maximum intake valve diameter 1.94 inches. Maximum exhaust valve diameter 1.50 inches. Stud girdles are not permitted. Angle milling is not permitted.
- No porting, polishing or modifications permitted (including chemical porting). Port matching is not permitted.
- Roller rockers are permitted – 1.5 ratio only.
- Stock replacement timing chain or double roller chain is permitted.
- Stock production harmonic balancer only.
- Maximum engine static compression permitted limited to maximum of 10.99 to 1.
- No aluminum or titanium parts allowed unless otherwise listed.
- Any specific part not listed within these rules must remain OEM manufacturer replacement parts only.
- Carburetor – Holley 4412 two (2) barrel. Only modifications allowed to carburetor will be the removal of choke plate and shaft. Maximum one (1) inch carburetor spacer only. No tapered or beveled spacers allowed. ID must remain consistent through spacer depth from top to bottom.
- All other posted engine accessory as well as standard rules apply unless otherwise detailed.
- This engine package is permitted at the competition weight of one hundred (100) pounds more than permitted crate engine option for initial competition. Wiscasset Speedway reserves the right to add or subtract given weight assignment in the effort of fair and equality within allowed engine options. This option will be in constant evaluation through competition and result.
- Exhaust system must be mounted in such a way as to direct spend gases away from areas of possible spillage of fuel. Headers may be used but must be pointed away from the ground. All cars must have working muffler, passing a maximum of one hundred (100) decibel noise test fifty (50) feet from the track. Exhaust may exit by the nerf bars but may not extend beyond them. Exhaust must be collector type header. No one hundred eighty (180) degree headers allowed. Left exhaust header must exit on left side, right header on right side. Only headers allowed are IMCA type – no cross over headers.
- Muffler Rule – must run Schoenfeld Part #112535 3.5”x11” or Part #12530 3.0” x 11”.
- Air filter maximum size is seventeen (17) inches outside diameter by four (4) inches high. No flow enhancers or cold air induction. No notching of cowl, back of hood must seal to cowl top.
- Only stock type mechanical fuel pumps mounted in stock position. No electrical pumps.
- Any battery powered ignition system produce for highway use is allowed. No crank trigger systems, no magnetos, boosters or other devices allowed. One working coil only. No aftermarket electronic ignitions. No systems with external box allowed. Battery must be securely fastened inside main frame rails and outside of cockpit. Battery must have protective cover. GM HEI stock type distributor only.
- System may be modified. No antifreeze allowed. Only belt driven block mounted OEM similar design water pumps permitted. Belt driven fan blade or electric cooling fan permitted.
- Aftermarket racing power steering pump and any design tank are permitted.
- Hubs/Rotors – front must be of stock OEM heavy duty type only. No aftermarket replacement hubs.
- Rear may be either stock, flange hub type or hat design.
- Must be steel.
- Aftermarket type must be as produced and be a minimum of .810 thickness straight vane rotor with no scalloped type permitted.
- Pad surface must be smooth with no lightening, coating or heat disbursement machining.
- One working brake per wheel with all four (4) being operational and able to lock on inspection.
- All calipers must be stock OEM. No floating brake calipers permitted.
- Brake bias adjuster is permitted.
WHEELS – TIRES
- Conventional steel wheels only, measuring fifteen (15) inches by eight (8) inches.
- No plastic carbon fiber wheels.
- No wide fives.
- No tire bleeders.
- Wiscasset Speedway shall keep a registered inventory of tires for each Modified team with all tires being registered to the car number. Modified teams shall be responsible for their own tire management. Wiscasset Speedway will not impound, manage or provide storage for team tires.
- From April 7th to May 4th, Modified teams shall have the option to purchase a maximum of six (6) new tires to begin their registered tire inventory for the 2018 racing season. Beginning May 5th, on actual Modified racing events thereafter, teams shall have the option to purchase a maximum of one (1) new tire for their registered tire inventory. Should the option of one (1) new tire purchase not be exercised, the option is forfeited. All tires shall be registered to the car number.
- Modified teams arriving to race after May 4th shall have the option to purchase a maximum of four (4) new tires to begin their registered tire inventory and on actual Modified racing events thereafter, shall have the option of purchasing a maximum of one (1) new tire for their registered tire inventory. Should the option of one (1) new tire purchase not be exercised, the option shall be forfeited. All tires shall be registered to the car number.
- Should a tire be damaged during the race event, it shall be the responsibility of the race team to present the damaged tire that day and within a timely manner to Tech for inspection. All tire replacements must have a written record with Tech regarding inspection and approval for replacement. Only tires with 50% or more tread will be eligible for replacement. Replacement of damaged tires will be limited to three (3) for the season. No Exceptions.
- All cars are subject to random testing at the discretion of Tech, durometer testing will be conducted On Track after heats and features of the top five (5) cars. Failure to meet the 2018 division preset number (Right Sides 50 and Left Sides 45 with No Allowances) will be subject to penalty as follows: Heats – illegal tire(s) held at Tech for the remainder of the race event and not allowed again until cleared by Tech; forfeiture of heat points and feature start is rear of the field. Features – Full DQ with illegal tire(s) not allowed again until cleared by Tech.
- While division participants agree use of tire conditioning agents is difficult to police – all agree application of such will not be allowed at the track.
- Speedway management reserves the right to modify tire rules in conjunction with division needs & concerns.
Base Weight Minimum
- Car weights are race ready, full of fuel and with driver in the seat.
- Minimum total = 2600 lbs.
- Maximum left side weight is fifty eight percent (58%).
- All ballast weight must be located outside of the driver compartment with each piece attached with a minimum of two (2) three eighths (3/8) inch bolts, washers and locking nuts.
- All weight must be lead with each piece painted white and display car number.
- Howe fabricated Camaro/Impala/Chevelle front clip………+25 lbs.
NUMBERING – LETTERING
- All car numbers are assigned and registered by Wiscasset Speedway.
- When changing divisions, a new number will be assigned.
- Car numbers must be a minimum of eighteen (18) inches high and three (3) inches wide.
- Numbers shall be painted in contrasting colors to the car on both doors and the roof. Reflective chrome, gold or prism numbers will not be acceptable.
- Roof numbers should be visible as read from the grandstand side of the car.
- The car number must appear in six (6) inch high numbers in the uppermost corner of the windshield on the passenger side and also on the right rear.
- Two way communications shall be allowed; however, Wiscasset Speedway Management will require frequency registration.
- RaceCeivers are mandatory equipment.
All race car components, including sealed engines, may be subject to teardown/dismantle inspection at any time. Refer to General Rules – Tech Information Section.
The definition of OEM for the purpose of rule interpretation is – a part specified by the manufacturer as being for a specific make, year, model of an automobile or commonly available thru a replacement parts supplier – ie – NAPA, O’Reilly, Car Quest. This does not include GM Bowtie or Ford SVO.
Motorsports At All Levels Pose A Risk To Your Well Being. Following The Rules Set Forth By Wiscasset Speedway In No Way Guarantees Or Suggests Your Safety.
Wiscasset Speedway Reserves The Right To Modify This Document At Any Time. Such Modifications Will Become Effective And Enforced On The Next Race Date.
Last Edit 12/1/17