Updated 12/12/2008
Section 1: General
1.1 GM part number 88958602 & GM part number 88958604 crate
engines only are allowed. These engines are sealed at the intake
manifold, cylinder head, front cover, and oil pan. Crate engines
must not be altered, modified or change from factory specs. The
sealed engines must remain intact and not be tampered with. Any
seals that have been removed or tampered with will make the
engine illegal and not eligible for competition. The penalty for
anyone tampering with seals, modifying any internal engine
parts, or changing the parts from stock as delivered sealed from
the factory will be subject to expulsion from racing at RIS for
the remainder of season.
1.2 103” minimum wheelbase.
1.3 Crate Motor Limited Late Models
may run a manufactured jig tube-type full frame, or a
combination of stock-type front clip/snout and tube frame.
Section 2: Safety
2.1 All lead weight must be properly secured and painted white.
2.2 All lead weight must have car number painted on it.
2.3 All safety items subject to Tech Inspectors approval.
2.4 All cars must have 3” seat belts with shoulder harness and
must be attached to roll cage.
2.5 We strongly recommend that all cars be equipped with a fire
extinguisher system.
2.6 All drivers must wear a complete fire suit and racing
gloves.
Section 3: Body
3.1 Udtra body rule will apply.
3.2 All edges must be rolled. No sharp or jagged edges or
corners.
3.3 Spoiler:
3.3.1 Rear spoiler must be made of a transparent material, such
as Lexan, and of adequate strength.
3.3.2 Maximum spoiler height 12 inches measured from deck to
tip, and 72” in length. Cannot be wider than car. LLM cars that
run with Super Late Models must run an 8" spoiler.
3.3.3 Rear spoiler cannot be suspended above deck to create a
wing effect.
3.3.4 Spoiler must begin where quarter panels end.
3.3.5 No rudders permitted.
3.4 No push bars allowed in front.
3.5 Rub rails are allowed between front and rear wheel wells.
Must not protrude from body more than 1” and not wider than 2”.
3.6 Aluminum bodies and fiberglass roofs permitted. No
fiberglass hoods.
3.7 Body subject to Tech Inspector approval.
Section 4: Frame
4.1 All frames must be of steel construction.
4.2 Stock front snout or tube snout back to front firewall are
permitted. 2 X 2 .083 wall thickness minimum.
4.3 If round tube frame, tubing must have a minimum of 1-3/4”
outside diameter, .083 wall thickness.
4.4 Notching of cross member permitted for large capacity oil
pan.
4.5 Cross bracing of frame allowed.
Section 5: Roll Cage
5.1 Specifications for Super Late Model roll cages apply. All
cars must have a suitable steel roll cage protecting the drivers
compartment, including headrest, constructed of 4 post design
with the front roll bar following the windshield contours and
the top of the roll cage forming a box the width of the inside
of the car.
5.2 Side rollbars are mandatory, and must extend into the door
panels, a minimum of three (3) bars must be on the driver’s
side. A minimum of 3 side bars are required on driver’s side and
must extend into the door opening.
5.3 A minimum of 3 side bars extending into the passenger door.
5.4 Two bars may be anchored from front posts of the roll cage
to the frame behind the A arms on each side.
5.5 A minimum of two cross bars are required along the back of
the driver’s seat.
5.6 The driver’s seat must be securely fastened to the roll cage
with at least 3” clearance from the roll cage to the driver’s
helmet.
5.7 All tubing must be a minimum of 1 – ½” in diameter, with a
minimum material thickness of .083”.
5.8 Roll cage must be welded to frame.
5.9 All welds must be continuous welds.
5.10 All corner welds must be reinforced with gussets.
5.11 All additional bracing is subject to inspection.
5.12 No offset cages allowed.
5.13 Two additional bars should be anchored from the roll bar to
the frame area above the rear housing.
5.14 No screw-type fittings or pipe threads allowed.
5.15 All bars within reach of the driver must be well padded
with substantial padding material.
5.16 Radiator hoop is allowed, attached to frame, and may be
attached to roll cage.
5.17 Radiator hoop may not be wider than frame.
Section 6: Firewalls
6.1 Front - All holes patched with sheet metal to seal the
driver’s compartment from the engine compartment.
6.2 Rear - All holes patched with sheet metal to seal the
driver’s compartment from the trunk compartment.
6.3 Rear firewall may be moved up to back of driver’s seat.
6.4 .22 gauge sheet metal mandatory.
Section 7: Tires / Wheels
7.1. Rules for Riverside Super Late Models for tires and wheels
apply.
Section 8: Brakes
8.1 Four-wheel hydraulic type brakes. Right front brake
optional.
8.2 Must be in good working order at all times.
8.3 No cut off valves.
8.4 After market disk brakes allowed.
8.5 Adjustable proportioning valves mounted within reach of the
driver allowed.
8.6 After market master cylinders allowed.
Section 9: Suspension
9.1 Racing shocks permitted.
9.2 Coil over permitted.
9.3 One shock per wheel
9.4 Racing springs permitted.
9.5 Lowering blocks in rear are allowed. (2” max.)
9.6 Jack bolts permitted.
9.7 Steering quickeners permitted.
9.8 Suspension travel limiting devices such as chains, etc. are
allowed.
9.9 Any steering box and/or power steering pump permitted.
Aftermarket pumps & pulleys permitted.
9.10 Mounting brackets for steering box or pump may be
aftermarket.
Section 10: Clutch / Transmission
10.1 Aftermarket multi-disc clutch allowed. 7 inch minimum.
10.2 Must have at least one forward and one reverse gear in
working order.
10.3 No couplers allowed.
10.4 One 360 degree safety straps around front drive shaft
required.
10.5 A 360 degree blow proof bell housing is mandatory.
Not applicable if Bert & Brinns transmission is used.
10.6 Drive shaft must be painted white.
Section 11: Rear-end
11.1 Ford 9” rear allowed. Quick change rears allowed. Full
floating rears permitted. No open pipe (sprint car) rear end.
11.2 Top link may be adjustable aftermarket 3 link. Rubber
loaded top link allowed. Spring loaded top link allowed.
11.3 No electronic traction control. Rear end must be locked.
11.4 Panhard bars and J bars are permitted. No jacking devices
within reach of the driver are allowed.
Section 12: Battery, Ignition, and Electronics
12.1 Battery must be securely mounted in an enclosed metal box.
Subject to tech approval.
12.2 If in driver's compartment, battery must be in racing type
battery box.
12.3 Gel battery highly recommended.
12.4 All cars must have starter in working order.
12.5 No electronic devices allowed on any car thereby enhancing
adjustment of that car.
12.6 Any ignition with the exception of magnetos.
Section 13: Cooling Systems
13.1 One radiator under hood in stock position. Expansion tanks
allowed.
13.2 No antifreeze allowed.
13.3 Electric radiator fans allowed. No electric water pump.
Cast or aluminum water pump.
Section 14: Fuel System
14.1 Fuel cell must be used and will be checked for condition
and date of manufacture. 32 gal max.
14.2 Mechanical fuel pumps only, in stock location. No belt
drive fuel pumps.
14.2 The tank must be securely mounted in a 20 gauge steel box
with two 1/8” by 1” steel straps.
14.3 Gas lines should run under the floor. If gas lines run
through driver's compartment, they must be encased in steel
tubing.
14.4 Steel braid line is recommended.
14.6 Fuel cell must be located in trunk area and vented to the
outside of the car.
14.7 Commercial pump gasoline or racing gas only. No alcohol,
nitrous oxide, nitro methane or other nitrate additives or
propylene oxide.
14.8 Speed filler and vent tube must have a check
(anti-rollover) valve.
14.9 Fuel caps must be secured to fuel cell.
14.9 Fuel line may not exit bottom of fuel cell.
Section 15: Engine
15.1 RIS Will use GM crate motors 88958602 & 88958604.
15.2 Engine must be naturally aspirated.
15.3 Carburetor:
15.3.1 One four-barrel carburetor only of any manufacture.
15.3.2 May use one carburetor spacer (1 inch maximum) and two
standard one-piece open hole paper gasket (maximum 0.070 inch
thick), one gasket between intake to spacer and one gasket
between spacer to carburetor.
15.3.4 Must pass inspection using "Go, No-Go” gauge.
15.4 Exhaust:
15.4.1 Headers are permitted. Collector type headers required.
No tri-y headers allowed.
15.4.2 Exhaust system must be dual exhaust and exit under car.
15.4.3 May use 2 into 1 system.
15.4.4 Outlet diameter 6 inch I.D. maximum.
15.4.5 Exhaust must exit parallel to track.
15.4.6 No 180 degree headers allowed.
15.4.7 Exhaust must be securely bolted. No band clamps.
15.5 Oil pans and pump:
15.5.1 Stock location only. Wet sump only. No external oil
pumps, even if considered wet.
15.5.2 Oil Pans must remain sealed.
15.5.3 Frame may be notched for larger oil pans.
15.5.4 Remote oil filter and lines permitted (1) remote oil
filter.
15.5.5 One oil cooler/filter allowed.
15.6 Engine Location.
15.6.1 Cars using stock front clip, the number one spark plug
must be in line with the grease fitting on the left front upper
ball joint.
15.6.2 Tube cars may set the engine back, but not more than six
inches (6") from the grease fitting on the left front upper ball
joint.
Engines: Late Model Stock
1. Stock OEM production cast iron block.
2. Maximum engine displacement of 362 cubic inches.
3. No repositioning, boring or bushing of cam or lifter bores.
4. OEM production crank or any brand of 3.480 stroke w/stock
weight. (Balancing only, no knifing)
5. Any OEM or aftermarket stock length rod (5.7" chevy I beam).
No billet rods allowed.
6. Any flat top 2 or 4 valve relief piston allowed.
7. Max "0" deck height. (Piston may not protrude above deck
surface).
8. Timing set - Chain only. No belt or gear drives allowed.
9. Any Hydraulic cam allowed. Engine must pull 17" of vacuum at
1,000 rpm by the track gauge. Must utilize stock firing order.
No solid lifter's of any style allowed.
10. Any 5/16 diameter pushrod.
11. Stamped steel or Aluminum roller rocker arms allowed. No
shaft systems, rev kits, stud girdles or valve stabalizers
allowed.
12. NO AFTER MARKET HEADS ALLOWED. Stock OEM or the GM Vortec
head allowed. Steel and straight plug heads only. No GM angle
plug head. No porting, polishing,grinding or excessive deburring
in any breathing area on heads allowed. No shot peening or acid
porting of heads allowed. 3 angle valve job is allowed. Minimum
chamber volume - 62cc.
13. Stock valve stem and size limited to OEM production specs. (
chevy - 11/32 stem, 1.94/1.5 head diameter).
14. Screw in studs and guide plates are permitted.
15. Valve Springs - Any single spring, with or without a dampner,
with a max of 120# of seat pressure allowed.
16. Aftermarket oil pans permitted. No dry sump systems.
17. Any intake.
18. Fuel pump must be in stock location, aftermarket pumps
allowed.
18. No titanium parts allowed.
19. No magnetos.
20. No vacuum pumps
21. These rules may be adjusted in the interest of fairness of
competition.
22. Must weigh a minimum of 2400 lbs anytime.
Section 16: Weight
16.1 All tube type cars using the GM Performance Parts #602
engine must weigh 2200lbs, after feature race, with driver and
no fuel added.
16.2 All tube type cars using the GM Performance Parts #604 must
weigh 2350lbs, after feature race, with driver and no fuel
added.
16.3 All cars stock front clip cars using the GM Performance
Parts #602 engine must weigh 2100lbs, after feature race, with
driver and no fuel added.
16.4 All cars stock front clip cars using the GM Performance
Parts #604 engine must weigh 2200lbs, after feature race, with
driver and no fuel added.
16.5 When Ford and Chrysler crate engines become available, RIS
will announce the specifications for Ford engines.
Section 17: Protest / Post-Race Inspection
17.1 Protest must be submitted to the Race Director or a Track
Official within 10 minutes of feature completion (fall of the
checkered flag) for the class involved. Car protested has right
to counter protest. Only top 5 and on the lead lap can protest.
17.2 Refusal to comply with post race protest will result in
automatic disqualification.
17.3 Protest fees: $300 for the top half of engine. $500 for
complete engine. $250 for removal of bell housing to inspect fly
wheel/torque converter. If found illegal, the driver submitting
the protest will retain the protest fee. If found legal, the
protested driver will retain the protest fee.
17.4 RIS will not receive any proceeds of a protest inspection.
RIS will not incur any costs for labor or materials associated
with teardown for inspections.
17.5 Protest teardowns will be conducted in an area designated
by the Race Director. The only participants allowed access to
the protested car are: RIS officials, the driver submitting the
protest and the driver that was protested and two of his/her
mechanics. Teardown procedures will be directed and closely
monitored by RIS officials.
17.6 If the engine protest inspection results in the driver
being found illegal, the driver will lose points and purse for
that night, and the car and driver will be suspended for the
remainder for the year for the Limited Late Model Class.
17.7 Can OR Can’t rule: Do not try to read between the lines in
the rule book. Just because the book doesn’t say you can’t,
don’t assume you can. Any modifications not specifically
outlined here are at the Tech Departments discretion. All final
decisions will be made by the tech Officials. Ask first before
you assume something is legal.
