2009 LSX All Motor Rules: Updated 7/6/09

[REDGAR]

Official 2009 All Motor rules have been posted. Following is a copy of the rules from the NMCA web site. I will put a direct link to the source at the end so please double check in case I miss something.

2009 ERL Performance LS ALL MOTOR SHOOT OUT

GENERAL OVERVIEW
This is a NATURALLY ASPIRATED heads-up shoot-out style drag racing class.
Developed for naturally aspirated LS small block powered GM cars and trucks.
All races are on a .400 Pro Tree and in a heads up format.
This will be an ALL RUN qualifying format.
Vehicles are required to be stock appearing and stock bodied.
All vehicles MUST pass NHRA/IHRA safety inspection for ET and speed.
A Sportsman ladder will determine running order.
Vehicles must be driven to staging and to scales, can be towed after scales
Vehicles are required to run GM Performance Parts Sponsor decal and GM Performance Parts LSX Shootout license plate

ENGINE
Only LS based small block engines are allowed.
Cast aluminum or iron block required
Displacement will be verified by using the P&G method
Maximum of (2) mufflers are mandatory
4-inch maximum exhaust exit size
Gasoline is the only fuel allowed
Cylinder heads limited to LS OEM or LS OEM “Style” aftermarket head.
Billet cylinder heads are prohibited
Canted valve variations permitted with 50# weight adder
Cylinder head must be identifiable to verify legality
Any modifications allowed to legal heads
Dry sump oiling systems permitted

BALLAST
Must be NHRA/IHRA approved mounting
Maximum 100# per individual weight bar
No loose or unsecured ballast allowed and will be grounds for disqualification

CARBURETORS/INDUCTION
Any single 4-bbl carburetor allowed
Any single throttle body allowed. Throttle body must be single throttle blade, or 4150, or 4500 style.
Any EFI system allowed
Any style intake manifold allowed, including sheet metal/fabricated manifolds.
Production OEM intake manifolds (stock unaltered runner lengths) are permitted a 100# weight break
Any modifications permitted, manifold must be identifiable

TRANSMISSION
Any OEM style automatic transmission permitted
Any non-planetary style manual transmission permitted (* see weights)
Any torque converter allowed. Lock-up type permitted.
Torque convertors not permitted with manual transmissions
Clutch-activated automatic transmissions (re: Clutch-flite) are prohibited

SUSPENSION
Aftermarket K-members allowed
Mini tubs and notched frame rails allowed
Factory rear frame rail required in OEM location
Wheelie bars are permitted
Stock type suspensions permitted with stock mounting locations
Ladder bars permitted with 50# weight adder
Non-OEM 4-links prohibited
Coilovers permitted
Front-wheel drive conversions prohibited

INTERIOR
Must be original appearing.
Floors must be upholstered, headliners required
Two seats are required in stock location, rear seat may be removed
OEM appearing dash required

BODY
Forward facing hood scoops prohibited except for OEM type
Cowl induction hoods permitted, 6” max
OEM composite body panels permitted
Light-weight or fiberglass body pieces limited to hood, rear deck and bumpers
Overhangs must be OEM, Wheelbase must be OEM +/- 1”
Doors must be OEM material
Rear spoilers permitted, max. length 26”, may not be molded into the body
Tinted windows are not permitted forward of the “B” pillar, per NHRA requirements

ELECTRICAL
Electronic driving aids prohibited
Throttle stops, delay boxes and auto shifters prohibited
Two-step, trans-brakes and line-locks are permitted
Functional headlights, taillights and horn required
Any aftermarket ignition permitted

TIRES-WHEELS
TIRES - FRONT: Front tires must have a minimum tread width of 4.5 inches.
TIRES - REAR: Street type or racing slicks permitted
Maximum actual measured tire size is as follows:
Actual measured tread of tire is limited to 10.6 inches by 28.6 inches tall
Maximum roll out to be 90 inches as measured at the tire edge
Actual tire width will be measured by a “go - no go” gauge after conclusion of run at scale area
Tire tread may not extend outside fender lip.
“W” tires prohibited, tire shaving prohibited

WEIGHTS
Base CID Base weight
370 3150
420 3300
440 3375
470 3450

8.5 lbs/cu in penalty applies for cubic inches over base weight break limit. (Maximum cubic inch still applies.) All weights are with driver & rounded down to the five pound increment. Ex: A calculated weight of 3228 would be required to weigh 3225 with driver at scales.
Manual transmission – weight penalty of 125 lbs. added to base weights

SPECIAL NOTES:
Absolutely no nitrous or other power-adder equipment will be allowed on the vehicle.
Nitrous plates, solenoids, soft or hard lines, nozzles, bottles or disconnected superchargers must be removed.

http://www.nmcadigital.com/lsx/rules...lmotor_new.pdf

[Anonymous]

What are the maximum cubic inches? 470?

It should say specifically.

BTW - Thanks for posting all these Redgar!

[coolz28]

what about 2 single blade throttle bodys?

[nmcajeff]

Sorry single throttle bodies only. Let's say you wanted to build a 500 inch combo that's 8.5 pounds per inch over 470=255 pounds making your total minimum at 3705. exceeding the SFI/NHRA chassis certification making this combo ineligable to compete.

[Anonymous]

Originally Posted by nmcajeff

Let's say you wanted to build a 500 inch combo that's 8.5 pounds per inch over 470=255 pounds making your total minimum at 3705. exceeding the SFI/NHRA chassis certification making this combo ineligable to compete.

Interesting.
So the SFI/NHRA maximum weight is actually determining the maximum displacement of the engine for the class?

So can I assume that 3700 lbs. is the most that a car can weigh?
This is very interesting, I have never heard of this before in slower classes?
(Only in the very fast classes like Pro Mod & Pro Street etc...because
the driver would have trouble slowing a heavy car down from 200 plus mph)

Not to go off topic, but then there must be a limit for heavy cars in True Street too?
Like a 3800 lb. 8 second, turbo GTO would actually be illegal?

I guess this is all in the NHRA rule book?

Thanks Jeff, I would suspect that most people don't know this.

[Fireball]

Originally Posted by nmcajeff

Sorry single throttle bodies only. Let's say you wanted to build a 500 inch combo that's 8.5 pounds per inch over 470=255 pounds making your total minimum at 3705. exceeding the SFI/NHRA chassis certification making this combo ineligable to compete.

only SFI 25.x have weight limititations of 3600 lbs. pretty sure sportsman cages can weigh more and go as fast as 8.50...

[JBM]

Why no front facing scoops? Seems as though there were several aftermarket ws6 style hoods in the past with front facing scoops. I just got a new hood for carb clearance, and I would hate to not be able to run in October because of it. Local n/a racing series allows front facing scoops, limiting us to a 5" high opening from the base of the hood.

[ls1 joe]

It means no prostock style hood scoops, any thing factory, like a SS hood scoop or a WS6 ram air should be fine.

[FSTR-THANU]

So Kinsler intakes are not acceptable then. 8 throttle bodies. Just confirming for a buddy.

Tom

[GIZMO]

Originally Posted by nmcajeff

Sorry single throttle bodies only. Let's say you wanted to build a 500 inch combo that's 8.5 pounds per inch over 470=255 pounds making your total minimum at 3705. exceeding the SFI/NHRA chassis certification making this combo ineligable to compete.

What suspension are you going to allow as a replacement for the factory swing arm rears in GTO's etc? Will you allow anything that the NHRA will allow in a Stocker? Without a weight penalty?

I see you still don't have a weight break for 346 ci motors.

Take Care,

Daren

[UGotBeaT]

Would of liked to see non GM cars with ls engines in the all motor class..

[GoldRust]

[02blutb]

Originally Posted by UGotBeaT

Would of liked to see non GM cars with ls engines in the all motor class..

x2 i have a mustang with a lsx motor that would be a contender in this class

[REDGAR]

Please review the first post as NMCA has provided a new rules update though I don't think any of the rules changed, they updated the Average Joe stuff

[mikey]

I have no funtional headlights or horn. Harness has been removed

Any chance of relaxing those rules?

[REDGAR]

Looks like a few questions here I cannot answer. I will ask an NMCA rep to address them.

[nmcajeff]

If your car does not fit within the rules of the class you cannot run in the class. You still have plenty of time to make the changes to the car to be legal for the class.

[Black8Banger]

yea i dont have a horn and my side windows are tinted...guess im out too

[nmass399]

So you cant certify a 500 cube engined car because it has to weigh 3705, well i guess i wont be able to run the all motor class in the future years. I hope you guys decide to change these weight rules before i get the engine in.

[MADMAN]

Originally Posted by Black8Banger

yea i dont have a horn and my side windows are tinted...guess im out too

A horn and push button will cost a whopping $20.00 at Autozone. Or you could do what we do and buy a handheld air horn and put it in the door pocket. When they ask for the horn then hang it out the window and push the trigger.

The window tint deal is for safety so the starter can see that you have all you equipment on.