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2007
Hobby Rules
HOBBY CAR RACING IS DESIGNED FOR THE
AMATEUR INDIVIDUAL PARTICIPATING IN RACING AS A HOBBY.
THESE RULES AND RESTRICTIONS ARE DESIGNED TO PREVENT THE
COST OF RACING FROM GETTING OUT OF HAND, AND TO GIVE EACH
INDIVIDUAL A FAIR AND COMPETITIVE CHANCE IN A DIVISION
IN WHICH THE ENJOYMENT OF WINNING IS JUST AS THRILLING
AS IN THE FASTER, MORE SOPHISTICATED DIVISIONS.
Bodies and Frames
1. Frame must be 1970 or newer. Ford,
Dodge, Min GM, on factory wheel base only. Dodge or Ford
may run Metric frame or GM frame.
2. Must be full original frame from front
or idler arm and front of steering box to top of rear
end. May replace frame from center of rear-end back with
tubing of same size.
3. Frame must remain stock across rear
and across front.
4. May run 3 Link suspension with a 100
pound weight penalty that must be mounted in front of
fire wall.
5. Body may be after market steel or
aluminum, but must look like body being used. Camaro,
Monte Carlo, Ford, Dodge, etc. Roof must be completely
stock size for body run. NO WEDGE BODIES will be allowed.
After market upper control arms will be permitted; however,
there can be no modification to the lower “A”
frames.
6. Passenger side of car can be boxed
in to driver or center of car.
Body Measurements
1. Front fender must be at least 33”
to top of ground. No Bubbles. Door opening 13” front
to 14.5” bck minimum. Roof height no lower than
51”. Rear quarter 34” to 37” max. front
guard. Rear spoiler max 7”.
2. May run fiberglass roof.
3. Body must be no wider than 70”
or narrower than 68”.
4. Rear and front bumper may be manufactured
of 2X2 or 2X3 or round tubing. All ends must be capped
and extend no further than 5” past frame rails.
Front rails. Front bumper must be behind nose piece.
5. Rear of car must be enclosed from
top of bumper to bottom of trunk.
Wheelbase
1. Cannot be altered from frames being
used, etc. 110, 108.
2. May reinforce with plate or tubing
if using uni-body car. Front and rear frame members must
be tied together.
Tires and Rims
1. 10” maximum racing tire.
Open tire rule as long as it punches 48 or higher on a
durometer before the race.
2. Rims must be maximum of 10”.
Two inch offset maximum, steel rims only, no home made
rims. May run bead lock on right rear only. No home made
bead locks.
Suspension
1. All parts must be completely stock
for car being run. Cannot altor any stock parts, except
rear upper trailing arms for pinion angle. May change
spring rates. Safety hubs are recommended. ½”
studs and 1” lug nut mandatory on all four wheels.
Weight jacks allowed on front and rear.
2. Shocks (may be racing shocks) location
optional. One per wheel, no other shocks allowed on car.
No air shocks or booster springs allowed. Steel Body shock
NO AIR SHOCKS.
3. Brakes mandatory on 3 wheels.
Batteries – Batteries may be moved
to the inside or truck area of the car but must be in
a marine type battery case fully covered and securely
mounted.
Gas Tank – Fuel tank and filler
neck must be inside or trunk area and bolted in place
(not in stock position under car). Must be in steel case
.028 or thicker and be strapped top and bottom 2”
wide min. Must have tip over valve.
Transmissions
1. Standard transmission must have stock
type clutch and pressure plate. 10” minimum stock
flywheel. No trick clutch units or aluminum or automatic
flywheels. Must have all forward and reverse gears. Standard
transmissions must have explosion-proof steel bell housings.
2. Automatic transmission – full
automatic. Stock torque converter must work. No disk drives.
Rear Ends
1. Stock type rear end or 9” Ford
rear end allowed. Locked only. Floating axles allowed.
Aftermarket mounts on rear end housing may be higher than
3” above housing.
2. Four wheel disc brakes allowed but
must use stock iron calipers.
Seatbelts
1. All cars must be equipped with a 5-point
quick release or aircraft type seat belt and shoulder
harness securely fastened to the frame or roll cage with
minimum 3/8” grade 5 bolts.
2. Seat belt or harness must be at least
3” material.
3. Approved helmet with face shield or
goggles required.
Engines
1. Engine must be same as manufacturer’s
body – engine setback - #1 (or forward most) plugs
no further back than top ball joint.
2. Bored black cannot exceed .060. No
destroked or stroked engines allowed such as 377 or 383
Chevy.
3. Maximum cubic inches: Chevy, Ford,
Mopar – 362.
4. Flat topped or dish pistons only.
5.7 Or 6” crank shaft (must weigh 48 pounds). Or
602 Crate with Burt or Brinn Transmission.
5. Roller rockers allowed, but must be
stud mounted. No shaft mounted rockers. 1.5 ratio only.
6. Stock exhaust manifold. May run in
frame or over frame headers.
7. Exhaust must exit parallel with ground,
no turned down exhaust. No 180 or crossover headers.
8. No porting or polishing of heads,
intake manifold, or exhaust manifold. May match port 3/8”.
9. Pump gasoline or racing fuel. No additives
or NOS allowed.
10. Hydraulic camshaft only with hydraulic
lifters. No solid lifters or rollers. Maximum lift .500
at valve. Measured .333 at camshaft.
11. Timing chains only.
12. Maximum single 2 barrel or stock
Holley 4412 carburetor, max. 500 CFM. No aluminum blocks
or heads. Max. 1 ¼ “ high adapter plate.
13. Ignition will be either point type
(stock) or HEI (stock). No MSD or aftermarket units or
parts.
14. Cast iron heads only. No angle plug,
bowtie, iron eagle, etc. Stock valves or stainless steel
(no titanium) 1.94 intake max 1.60 exhaust max. World
product heads 052 and vortec heads allowed.
15. Intake manifold may be cast iron
or victor jr only.
16. Any aluminum intake allowed must
not be more than 4 7/8 “ from top of plentum to
carb mounting flange.
Weight Rule
1. Cars with 3 Link suspension must weigh
3100 pounds (100 pounds in front of firewall) before the
race with driver in the car.
2. Crate cars must weigh 3000 pounds
before the race with driver in the car.
LEAD. Weight must be securely mounted
to the car’s frame or roll cage. The lead must be
painted white and have the car’s number legibly
and visibly painted on it. The lead must be secured with
at least two ½” bolts. |
