Pure Stocks

Driver Notice:

Run 2016 Monett rules package with these 7 exceptions. (Subject to possible future adjustments)

  1. Gauge legal 500 Holley 2 bbl. part #4412 carburetor with vacuum port on right front corner. NO HP carbs. Max 1.25″ thick carb adaptor plate including gaskets.
  2. Rev limiter box with 5800 rpm chip IF motor puffs 360 ci or more OR if equipped with double hump heads.
  3. No intake or exhaust porting.
  4. No ram horn exhaust manifolds.
  5. Exhaust tubing NO LARGER THAN 2″ must extend past back of driver seat with no turndowns. Can turn out but not beyond rocker panels.
  6. Six quart MINIMUM capacity WORKING torque converter.
  7. Aluminum water pump is OK.

Springfield rules will be in effect in 2018!

COMMUNICATIONS :

All competitors must have a RACEceiver in car radio to compete at the Raceway.

2015 Updates

Shocks must meet shock rule by May 30th, 2015

2014 Updates

Rear Suspension rules updated below

2013 Updates

No Modifying of Harmonic Balancer

Carb must have vacumn ports for testing vacumn

 

Bodies:

Minimum 108 inch wheelbase, except 1983 or newer t-birds or Chrysler  products may be 105 inch wheelbase. Any year American  made production car . All cars to remain stock . Full frame cars may remove inner fender wells , unibodies may not. Bumpers must remain stock with no bracing outside frame horns . Radiator may have protection bar. steering column  may be stock or fabricated with removable steer wheel. Car may be stripped ,fire wall from front to rear stock with all holes patched no mirrows , must have safety bars or screen over drivers side windshield. Hood fenders, and bumpers required. Engine hoop and snout bars allowed. NO SPOILERS.

Cage:

Must have at least 3 left side and 2 right side door bars, 4 up right bars, cross brace behind driver, middle bar in top, down bars off rear of cage going through rear fire wall into trunk ok, must not connect to rear bumper. Tubing must be round & at least 1.5 inches in diameter .095 wall minimum thickness.

Engine/Motor:

Stock motor, stock location, stock solid motor mounts in stock location. Must be same make as car.

Size of engine: Max. compression 9 to 1

350 gm .060 max.

351 windsor ford .060 max.

360 chry. .060 max.

Harmonic balancer on GM 8 inch minimum.

Smaller engine allowed no stroker engines allowed!!!!!!!!!

Update: Stock Balancer ONLY. No Modifications, No Lightening

Heads:

GM OEM approved head numbers are: 14079267, 3986336, 3986339, 3986339X, 3986388, 3932441, 376445, 3928454, 3932454, 3876487, 3973487, 3973487X, 3973493, 3951598, 468642, 330862, 333882, 3998920, 3998991, 3998993, 3998997, 3970126. Maximum size valves on these heads are 1.94 inch intake and 1.50 inch exhaust. No performance heads (no double humps, no 292 castings, no LT1, no bowtie, no center bolt valve cover, or aftermarket allowed.) Porting or polishing, screw in studs with shoulders, or guide plates are not permitted.     305 heads on 305 only!!!!!! No bee Hive or high performance valve springs.

Camshaft:

Hydraulic camshaft only, must pull at least 15 inches of vacuum, no tolerance. 430 maximum lift at valve, stock 1.5 ratio rockers only, no tolerance. No roller cams ,no roller tip or roller rockers allowed.

Crankshaft and rods:

Stock appearing, no light weight cranks. No H-beam rods. Press fit rods only, 5.7 rod on GM maximum. Aftermarket Eagle, Scat, stock type ok. 3.48 maximum stroke. No lightning of any kind to crankshaft.

Intake manifold:

Stock cast iron, no aluminum, no bowtie, ford d5 or newer chrysler no high rise. Intake must be unaltered.

Carb:

4412 Holley only 2bbl, no modifications. Except jets and choke removed. No modifications to choke tower. Carb subject to claim by any driver in a feature in lead lap with winner. Claim is 250 dollars outright or 125 dollars exchange. Failure to sell /points and finish for the night ,2 week susp. And 50 dollar fine paid to a charity before returning to race. No electric fuel pumps /stock man. Pump only. Spacer plate for carb. From intake to carb only /claim $25 outright /$15 exchange.

Exhaust:

Stock cast iron exhaust manifolds only (no ram horn no lt1 no high performance) 2 inch od pipe must extend past driver.

Pistons:

Flat top 4 valve relief only. Hypereutectic 4 valve relief ok. No JE, Ross, or ect. No high performance.

Radiators:

Aluminum radiator ok, aluminum pulleys ok , no alum. Water pumps.  Unless factory installed.

OIL PANS:

Racing style oil pans allowed. Must have 1” inspection hole above the oil line on the driver’s side. Failure to do so will result in removal of pan for tech. inspection. No aluminum oil pans.

Transmission:

OPTION 1 :All forward and reverse gears must be operational, plus a neutral position. With engine running and car in still position, driver must be able to engage car in gear and move forward, then backward. Only OEM production transmissions allowed. No ‘in and out’ boxes or quick-change devices allowed. Functioning shift levers must be in OEM location. One steel or aluminum OEM style/size flywheel allowed, must be bolted directly to end of crankshaft.10.4 IN MIN. CLUTCH STOCK APPEARING PRESSURE PLATE MUST WEIGH MIN. OF 15 LBS. Pressure plate will be weighed by itself. STOCK SPRING TYPE DISC NO SOLID HUB.A MIN. OF 15 LB. Flywheel will be weighed by itself. Must be unaltered three or four speed in OEM production case. No five (or more) speeds allowed.  Must have working clutch inside explosion-proof steel bell housing with one hole for throw out bearing lever or hose, must be 270 degrees around top of clutch and flywheel area ,NO  MINI-CLUTCH ALLOWED.NO RACING CLUTCHES.   Components must rotate, consistent with engine rpm, while car is in any gear.  No Bert, Brinn, or Falcon type transmissions allowed.

OPTION 2:Stock automatic transmission with full size working torque convertor

No Power Glides,3 Spd Automatics only no TCI CNR, ETC. TYPE TORQUE CONVERTORS Mandatory must have approved scatter shield constructed of minimum 0.125 inch by three inch steel, 270 degrees around flex plate. Only external lines allowed are for transmission cooler.

Claim on torque convertors $75.00

REAR ENDS:

Stock for car, may be locked, any gear ratio allowed. Rear trailing arms must be stock. No shortening or lengthening of trailing arms. Pinion angle must remain stock. Leaf spring cars must have plates welded to axle tubes to prevent pinion angle from moving.

SUSPENSION:

All components must be stock OEM for make and model no moving brackets or shortening lengths. OEM bushings only. No steering quickners, weight jacks, or spring spacers.

Shocks: Stock mount/Stock Appearing racing shocks allowed. No heim end or adjustable. No take apart shocks/mono tube only.

Springs: Stock appearing racing springs allowed.

Front: OEM diameter and minimum 11” height

Rear: Minimum 7” diameter and 12” height

REAR SUSPENSION: May use 9″ ford or stock rear-end. Trailing arms must remain stock for frame being used and be in stock location on chassis Gm to Gm- Ford to Ford etc. No aluminum parts. No Schrader-valves or adjustable shocks .No gas reservoir shocks. Shocks must be all steel. Cannot move spring forward, back or side to side. Must be in stock location. Leaf springs can run lowering blocks but no adjustable lowering blocks. No spring sliders. No split leaf springs must have save number of leafs in front of axle and behind .No slapper type traction devices. No roller bearings .No heim ends. Must be stock type bushings
i.e. If it came with a rubber bushing with steel insert it must remain that way. Aftermarket stock replacement ok. No floating bird cages, coil eliminators or any other traction devices allowed!!! No weight jack bolts. Rear shocks must be in stock type location. ( if they came in front of the rearend they must remain there.)
Rear trailing arms no more than 2 7/8 inches from bottom of housing to center of bolt. Same both sides. Upper control arms no more than 2 ½
inches from housing to center of the bolt. Same both sides. No adjustment holes allowed on rearend or chassis, must be stock location on chassis . Torque arm cars
must use stock type arm, aftermarket replacement ok but must match oem measurements non-adjustable, must use stock type bushing, front mount may be
fabricated but cannot be adjustable.

Weight:

No added weight. 46 max.rear percentage, no tolerance.

IGNITION:

Must be stock!!! No DUI or MSD, ect.

FUEL TANK:

Must be fuel cell, mounted in trunk. 22 gallon max, at least 2 straps both directions.Must have steel outer can.

TIRES:

Stock street tires, dot, no all terrain tires, max. 8 inch tread, will be checked with track gauge, P235/70r15 max., 255/60r15 max., 8 inch asphalt take offs allowed. 50 minimum compound.

WHEELS:

8 inch max, steel wheels, no bead locks, must have 1” lug nuts.

DRIVESHAFT:

Stock length, painted white, no aluminum.

BRAKES:

Must have 4 wheel working brakes. No shut off valves, bias valves, or aftermarket pedals permitted. Must use OEM type master cylinder. May remove power booster. Pedal must be in stock location.  4 wheel disc brakes ok.

FIRE EXTINGUISER:

Required, must be in drivers reach.

UNIFORM:

Must wear full racing suit and gloves

HELMET:

Snell rating of at least 2000

BELTS:

3 inch belts 2 years old max!!!!!!

SEAT:

Aluminum racing seat, mounted to cage, securely mounted, stock location. No setbacks!!!!!

MISCL:

This is a stock class, no high performance parts; if you think it is a grey area ask track or tech before doing it, will be tech’d by tracks interpretation of rules!