Stocks
HOBBY STOCKS
Introduction:
The Hobby Stocks are designed to be a pure stock racing class. The purpose of this class is
safe, fun, low cost, close, competitive racing. An attempt will be made to keep this class stock as much as possible and the spirit of the rule is what we are after and we shall do whatever we can to Keep the Hobbies affordable. Use of OEM(original equipment manufacturer) parts is part of what will make this class work. We reserve the right to change, omit, add any rules we deem responsible for safety, and the betterment of competition.
Drivers must be at least 14 years old.
Car/Truck Options:
Open to any passenger car or 2-WD light duty pickup truck from 1960- present date. No Jeeps,Corvettes,convertibles,Citations,Vegas,Corvair,Falcon,Gremlins,Monza types, 4-WD's,sports cars, or compact cars. Vehicles not covered under these exclusions do not mean they are pure stock. Consult tech inspector as to the legality of the vehicle before building. Some models may not be included in the above exclusions. To avoid disappointment and expense, please check with us before you build a car.
Car/Pick-up Specification:
Any make or model American production car or pick-up trucks. Wheelbase on any Hobby Stock will be a minimum 108 inches. Must be 2 wheel drive cars or pick-ups rear wheel drive but only as it came out from the factory with no wheelbase modifications.
(A)Wheelbase to Engine type rule:
Unlimited size engine.
Note: No v8 powered Camaros, Mustangs, Firebirds, or cars of similar style and type. No factory specials allowed (Cobra Jets-SS's GTX's, Z28, Boss, etc) remember if you are not sure contact us now.
Must stay within the same Manufacture Family (Ford to Ford, Chevy (GM) to Chevy, Dodge to Chrysler)
(B)Bodies, Frames, Suspension, and more:
Must retain stock bodies.
NO rear spoiler is allowed.
Body trimming for tire clearance and removing inner fenders, and inner door skin for roll bar clearance is allowed. Hood and Trunk lid and trunk area may be gutted. Firewall must remain intact with any holes to driver's compartment covered. Uni-bodies may be braced for safety (driver's compartment area only - that allows for under the car also). No adjustable springs or weight jacks on the car. No added weight to the cars.
(C)All glass must be removed. All trim, headlights, taillights, turn signals, marker lights, mirrors, carpet, headliner, rear seat, passenger seat, door panels and antennas must be removed.
(D)All doors must be welded- Air bags must be removed.
(E) Must have front and rear tow hooks or chains for the wrecker.
(F) Must be tastefully and cleanly painted with car numbers on the doors and roof.
(G) Bumpers and nose pieces- Must be stock appearing- aftermarket grill or nose pieces are allowed. Hydraulic Bumpers must be chained on.
(H) Battery - Must be relocated and mounted securely and covered- battery must be placed in the rear passenger seating area. Battery cables running in the passenger area of the car must be mounted in safe and secure manner.
(I) Body bumpers or nerf bars down the sides of the car to protect the body area are allowed and recommended. To help protect the sides of the car from the bumper and bumper, nerf bars are allowed on each side of car. That bar or pipe must not be over 2 inch pipe or tubing.
(J) Exhaust- Must be stock manifolds and that means no modifications or performance enhanced.
NO HEADERS allowed (even if OEM). NO Center Dump Manifolds allowed. NO BREZENSKI or performance enhanced Manifolds.
(K) Stock Engine- Any 100% stock V-8. Gasoline engine only. No performance parts of any kind. No superchargers or turbo's. No one-off specials like Shelby's and Buick Grand Nationals, ect. Remember Stock parts may not be altered either, A/C, EGR, heater, cruise control may be removed. The engine match the body (Chevy to GMC, Dodge to Chrysler, Ford to Mercury)
(L) Carburetor can be stock 2 barrel or 2 barrel Holley, stock fuel injection and stock fuel pumps.
All Carburetor Motors must pull 16" or greater (17, 18, 19) of vacuum at 1000 rpm that is checked by the carburetor. (Zero tolerance). Must have vacuum supply line accessible.
(M) Fuel Pumps must remain stock.
(N) Motors must be in original position. No motor set back of offset. Motor mounts do not have to be stock.
(O) Transmission: OEM Manual transmission to automatic and automatic to manual is car builder's choice. Transmission and clutch assembly and linkages must be of smooth working order and must be mounted safely. No mini clutches!
(P) Tires/Wheels: Maximum tires size 60 series DOT legal street tires or IMCA Modified and IMCA Stock Car tires allowed. 10" asphalt take offs are allowed. No racing style re-caps. No mud and snow tires, all weather is allowed. OEM maximum tire width 8" and diameter 16". 1" lug nuts allowed and recommended. Racing wheels are recommended.
(Q) Suspension: All suspension and steering parts must be stock for that car. No modifying of OEM parts, no mixing and matching, no relocating of mounts, stock springs without modifications with stock length. Locking of rear ends is allowed as well as FORD 9 inch rear ends are allowed because of axle safety. Mini spools are allowed on rear ends. Racing steering wheels allowed. Springs: coil springs must be the same left to right on the car. To clarify that means the same diameter coils as well as coil length. Must maintain stock ride height.
(R) Ignition: Must use stock OEM type ignition- no aftermarket HEI distributors or coils. Keep it stock!
Safety:
1. A six point well constructed roll cage is mandatory. Minimum roll cage should have at one post by each windshield post and two behind the driver with all four connected at the top with a roof hoop. Roll bars are allowed through the front or rear firewalls for 2010. You must have an angle brace running from the upper right corner to the lower left corner behind the driver. The two back bars must run from the top left and top right of the roof hoop to the rear of the car. We recommend a protective bar running from the front left cage post forward and down to the frame to protect the driver's foot area. There should be a minimum of 3" clearance from te roll cage to the driver's head. Roll cage padding is recommended.
2. Windshield area recommended having four (4) 3/8" windshield bars. Must have mesh screen on at least driver's side of where the windshield area is. One inch square mesh, painted black recommended.
3. Minimum of three (3) driver's side door bars constructed as part of the roll cage. Must have planting and reinforcements between the bars.
4. Gussets on all welds recommended. Must have minimum 5-point quick release seat belts attached to roll cage, Racing helmet required (Snell m2005 min SA2005 recommended). The driver must wear a long sleeve fire retardant suit also recommended is racing fire retardant gloves, underwear, and shoes.
5. Stock gas tank must be removed and replaced with a fuel cell or a marine type tank enclosed in a metal box. Metal fuel tank protection bars recommended. Fuel tank must be securely mounted to the trunk floor.
6. If other than a key ignition switch then that replacement switch be painted red with on and off plainly marked. Must be easily accessible to driver and track crew.
7. Must use racing metal racing seat.
8. Window net REQUIRED for drivers door window area. Should have a latch at top of window that driver and safety crew can easily release.
9. Fuel: pump gas only, no race gas, no additives, and no NOS.... If car is using rubber fuel lines they must be encased in metal pipe as they pass thru the driver's compartment. No performance enhancing additives are allowed to the fuel.
10. Numbers must be painted on front doors a minimum of 18" high, on the roof a minimum of 24" high, and a minimum of 3" wide. All number must be of a contrasting color to the body, and easy to read. NO chrome numbers allowed. Vinyl numbers and letters are allowed. Sponsors names and other lettering must be neat and not interfere with the numbers.
11. If car is set-up for passengers, it must have same safety equipment and roll cage type and protection as driver side. Passenger is required to have same safety equipment as driver.
12. Crash damage: these cars are going to be involved in a crash once in a while it is just a racing thing. Cars will need to be repaired to the safe and the appearance needs to be good also.
Factory Stock
CAR & BODY 3200 LB. WITH DRIVER AT END OF RACE
NO FRONT WHEEL DRIVE CARS.
1.) American made passenger car. No pickups, station wagons, convertibles, front wheel or rear engine cars.
2.) NO AFTER MARKET BODIES! STOCK FACTORY OEM BODY.
3.) Minimum 108” wheel base car. No cutting, shortening or lengthening of any kind. Stock wheelbase frames mandatory.
4.) Full stock floorboards must remain intact with metal firewall separating the driver from the fuel tank area. Stock firewall in stock position between engine and driver with all holes covered. Stock floor pan must cover entire drive train. No trimming floor pan outside of frame rails.
5.) No trimming except for 2” tires clearance.
6.) Front wheel wells may be removed. Rear wheel wells must remain stock.
7.) Hoods and trunk lids must remain stock and must be securely fastened. No holes in hood. Bracing can be removed.
8.) Stock bumpers must be used. Does not have to be same make as car. Pipe bumpers allowed if used with a plastic nosepiece. Rear bumpers must remain stock (no pipe bumpers). End of bumpers must be plated to side of body panel with minimum of 1/16” steel welded or bolted within bodylines. If plastic nosepiece is used, it must be riveted within bodylines. No sharp edges will be tolerated!!
9.) Bumpers must be chained on both sides to the frame to prevent falling off onto the track.
10.) No bars outside of stock bodylines with the exception of rub rails. Rub rails 1” wide by 2” tall may be attached to body from fender well to fender well flush with body. Rub rails must be securely fastened to body.
11.) Driver’s seat must not go farther back than rear of front door.
SUSPENSION
1.) Suspension parts must remain the stock for make of car. No modifying or reinforcing. No solid bushings or adjustable stabilizer links. Torsion bars must be
welded with equal spacing on each side.
2.) Stock mounted steel shocks and stock springs in stock location. No overloads or coil over shocks. Coil springs are to be same wire diameter and height as opposite side, no spacers. Leaf springs are to have same number of leafs as opposite side. Lowering blocks (2” maximum) may be used if they are of the same thickness as opposite side. Mopars with adjustable torsion bars must be made non-adjustable. Sway bars must be made non-adjustable. No traction control or traction aiding devices.
3.) Brakes on all four wheels must work. After Market pedal allowed. No adjustable device allowed. No adjustable proportioning valves.
4.) Weight or ballast allowed .
5) 9” Ford rear ends are allowed if mounted securely in factory mounts. No quick-change rear ends.
6.) Floaters will be allowed
7.) STOCK MOUNT NON-ADJUSTABLE TUBULAR UPPER A ARMS WITH STOCK NON-ADJUSTABLE BALL JOINTS WILL BE ALLOWED
WHEELS & TIRES
1.) Stock 7” & 8” wheels and tires allowed or 10” wheels with asphalt take offs.
NO RADIAL TAKEOFFS. Any D.O.T. tire that is available to the public as a street tire. White spoke steel allowed. Steel Wheels Only. 1” lug nuts required on all four wheels.
2.) No recaps, mud and snow, fancy exotic, trick gumball, McCrearys or Hoosier tires allowed. Must have D.O.T. stamp. Grooving allowed. Tires: 10”maximum width sidewall to sidewall.
3.) NO BEAD LOCKS WILL BE ALLOWED.
ENGINE & TRANSMISSION
1.) Engine must be strictly stock for make and model. Ford to Ford, Chevy to Chevy, etc.
2.) ALL ENGINE PARTS MUST HAVE OEM NUMBERS. (BLOCKS, INTAKES, ETC.)
Can have stock replacement head 170CC MAX
3.) Any hydraulic flat tappet camshaft only. Nothing over .060 bore. Roller tip rocker arms. No roller cams
4.) Flat top pistons only. No aluminum or steel hi-rise intakes. No Brazinskies. Adapters or spacers allowed. (1” maximum with gaskets). No modifying of any kind on intake manifolds.
5.) One two-barrel carburetor. No polishing, or altering of carburetor. May remove choke. Stock two barrel 500 cfm max allowed. No after market or modified carburetors allowed. Headers MUST exit behind driver.
6.) Any stock transmission, flywheels, and pressure plate. No aluminum flywheels or pressure plates. A scatter shield of ¼” or more plate of bullet proof or cast iron is required over the bell housing for manual transmissions and must be securely fastened to the frame. Auto transmissions must use minimum of 11” stock torque converter. Torque converter must work. No dump valves. No couplers or mini clutches. Must have visual inspection port. No less than 1” diameter in bell housing. Reverse must operate.
7.) No porting, polishing, grinding or altering of any kind to cylinder heads, intake manifold or valve spring seats. No bowtie, Vortec, SVO, dart, aluminum, or angle plug Chevy heads. Guide plates with Screw-in studs allowed in heads. No machine work tolerated.
8.) Racing gas allowed. No alcohol, nitro, methanol, or additives of any kind allowed. No electric fuel pumps. No pressurized fuel systems. No electric devices allowed in trunk area.
9.) Stock ignition only.
10.) After market harmonic balancers allowed if O.E.M. specs only.
11.) No cubic inch restrictions.
12.) All cars must have a solid throttle shaft linkage. No cables will be allowed
Fuel tanks 1.)Fuel cells with enclosed can are mandatory
IMCA Stock Cars
IMCA Rules with ammended Tire rule (10" Take- offs alllowed) www.imca.com