01/13/2021
2021 RIVER VALLEY PURE STOCK SERIES RULES :
( These are as-updated, Tues. January 12th, 2021. If you find mistakes let us know, we edited this without caffiene )
River Valley Pure Stock officials may make an interpretation or
amendment to these rules at anytime. The Rules & Regulations set
forth herein are designed to provide for the orderly conduct of racing
events only, and to establish minimum acceptable requirements for
successful events. No express or implied warranty of safety shall result
from publications of, or compliance with these rules, and regulations.
They are intended as a guide for the conduct of the sport, and are in
no way a guarantee against injury or death to participants.
FRAME:
Any American OEM full body 1955 or newer, full frame or unibody car
or truck. Frame must match body and body must be OEM mounts in
stock location. Wheelbase must match car, with no difference in
length from side to side. Frame must remain unaltered. Must have
factory fire wall or aftermarket fire wall. Frames may be “X” braced.
Camaro’s, Firebirds allowed. Strut cars allowed. Unibody cars may tie
frames together. Trailing arms must match car and remain unaltered.
WHEELBASE MUST MATCH CAR. Front Shocks must be inside of coil
springs. Frame can be tube, round or Square from center of rear
end housing to rear bumper.
ROLLCAGE:
Main cage must consist of continuous hoops. tubing, low carbon or
mild steel. Four post roll cage required, front down bars & rear hoop must be welded to OEM frame. Driver’s head must not protrude outside roll cage with helmet on. Rear hoop must have “X” brace. Front down bars must be tied together.
3 DOOR BARS:
MINIMUM of three door bars on both sides, parallel to ground,
& perpendicular to driver. MINIMUM OF 4 uprights tied from front to top door bar on driver side, & minimum of 3 uprights on passenger side. Driver’s side 1/8” thick doorplate is mandatory. Steel only.
BODY:
All bodies must be stock 'appearing' and be in OEM location. Must
have OEM floor pan past driver, even with pinion. 5 inch Spoilers ok. You may cut a Hole in Hood ! Hood scoops ok ! Aftermarket nose piece ok, no slope from fenders to nose piece Aftermarket tail piece ok. IF YOU DO NOT RUN A TAIL PIECE - YOU MUST PUT SHEET METAL BETWEEN THE BUMPER AND FUEL CELL. You are allowed to skin doors. NO Nerf Bars on Outside of Body. NO ground effects, NO bat wings.
WEIGHT:
Car must weigh 3200 lbs. after race with driver.
DRIVERS COMPARTMENT:
There must be a minimum of 3 windshield bars in front of driver.
Aluminum high back racing seat only, bolted to cage. Seat may be no
further back than front edge of B-pillar. Driver must be sealed off from
track, engine, & fuel compartment. NO ENCLOSED INTERIORS.
SEAT, SEAT BELTS, HELMET, NECK BRACE & FIRE SUITS
(5 pt. harness & seat belts):
No Factory type shoulder belts or straps can be used. Metal-to-Metal
buckles are required on shoulder and seat belt and are recommended
not to be more than 1 year old. Helmet – Snell 90 or SA 95 or better
recommended. Neck braces & Fire Suits mandatory.
FRONT SUSPENSION:
All components & mounts must be steel, unaltered OEM, in OEM
location & match frame. If equiped with Weight Jacks, weight jacks
must be welded solid. Ride Height Adjuster ok ! Stock A Frame ok.
Upper A Frame must be Stock Frame Mounts ! Must be Non Adjustable upper A Frames ! Tube type A Frames ok.
STEERING:
All components must be steel unaltered OEM, in OEM location &
match frame. OEM steering column may be replaced with steel
steering shafts (collapsible steering shaft recommended). Steering
quickners, ok ! Or remote power steering reservoirs. ok ! Steering
wheel & quick release may be aluminum. Aftermarket Power Steering
Pump ok !
SHOCKS:
There must be One OEM or O.E.M. replacement shock per wheel. All 4
shocks must be in stock location & stock mountings. Racing shocks
allowed. Must be crimped-end or welded shocks. No take apart shocks of any kind. THERE IS A $100 CLAIM, CASH ONLY, ON ALL (4) FOUR SHOCKS. Claim can only be made on Pure Stock driver. You may only Claim in “A” Feature. Failure to accept claim will forfeit all points for the season.
SPRINGS:
One steel spring only in OEM stock location. Racing springs allowed
with adjuster cup on right front only.
REAR SUSPENSION:
All components & mounts must be steel, unaltered, OEM, in OEM
location & match frame. OEM rubber or polyurethane control arm bushing only. NO independent rear suspension allowed. NO pan hard bars, spring rubbers, chain or cable allowed. Any weight Jacks must be Non-Adjustable. Welded Solid. Metric cars lower trailing arm no lower than 2 1/2” from rear end housing with 1/4" tolerance either way. Non adjusting lowering blocks on Camaros ok. Leaf spring cars can run adjustable shackles, but MUST be in same hole across, no off set adjustment. No Gold Tracks or ANY form of Traction Device allowed.
REAR END:
Must weld spider gears or may run mini spool. NO torque dividing or
limited slip differentials allowed. NO aluminum spools allowed. 9
Inch Ford Rear Ends allowed. Floater Rear Ends Allowed.
BUMPERS:
Bumpers must be approved OEM in OEM location. May have tube
bumpers as long as they fit the car to OEM type bumpers. Bumper
must be capped on the ends, with NO sharp edges. End of bumpers
must be tied to frame.
TIRES & WHEELS:
Any 8" or 10" pull-offs, grooving okay. Racing wheels allowed. Wheel spacers allowed. One-inch O.D. lug nuts Mandatory on all 4 Wheels.
NO bleeder valves. NO Hubcaps. No Adapters allowed. One bead-lock
allowed on right rear.
BRAKES:
Steel, unaltered OEM or unaltered OEM replacement, operative on all
4 wheels. Brakes must match car. NO antilock brake systems.
Aftermarket brake pedal assemblies ok, but cannot be adjusted from
driver's seat. May drill flanges & rotors to take larger wheel studs. Disc Brakes on rear end ok ! No brake adjustments of any kind.
EXHAUST:
Any OEM cast iron manifolds, NO after market manifolds. Center-dumps ok ! No Headers, NONE. Exhaust pipes must have a left side exhaust pipe. Must have a right side exhaust pipe. No pipe on either side can be any longer than 4 foot long. Exhaust must be under Car Type. Must be secured properly. If pipes are lost on track, driver will have to go to pits and not return to race. NO LTI Exhaust !
FUEL & FUEL SYSTEM:
Must run OEM mechanical push rod fuel pump only. Any 2 barrel carburetor. May remove choke plate. 2 barrel Holley (4412) with 1-inch adapter to manifold. NO modifications. Stock only. Spread bore Holley carburetors. Holley Carburetor must be a single line-single pump-vacuum secondary. Must bolt directly to cast iron Quadra Jet Intake manifold. 1 inch adaptor only. Edelbrock 600. $200.00 CLAIMER EXCHANGE ON CARBURETORS. No Modifications. Must pass no go gauge.
FUEL CELL:
Mandatory, with metal container enclosure. Pump Gas or Racing Fuel only – NO ALCOHOL.
BATTERY:
One 12-volt car battery only. Must be mounted in approved battery
box.
IGNITION:
Must run OEM distributor. $100.00 CLAIMER ON DISTRIBUTOR WITH EXCHANGE.
TRANSMISSION:
Coolers must be mounted in front of radiator. All forward & reverse
gears must be operational. Manual - must be unaltered OEM 3 or 4
speeds, with minimum 10.5” clutch. Hydraulic clutch release bearings ok. Steel unaltered flywheel only. Stock type pressure plate, NO altering allowed. Automatic - must be unaltered OEM, with unaltered pump. Must be in original bell housing, with minimum 10” torque converter. Converter must hold minimum of 3 quarts of fluid. Must have shield around outside of converter housing. Flex plate be full, unaltered OEM, or OEM replacement. Drive shaft: MUST BE PAINTED WHITE.
ENGINE COMPARTMENT:
Engine location, #1 plug must be in front of ball-joint.
ENGINE SPEIFICATIONS:
Steel OEM V-8 Block only. NO GM BOWTIE, FORD SVO OR MOPAR
W-2 BLOCKS, HEADS OR INTAKES ALLOWED. NO G.M. POWER PACK HEADS. NO DOUBLE HUMP HEADS. O.E.M. Stroke must match block. NO 400 or larger cubic inch parts allowed. Maximum 361 c.i. for GM, 363 c.i for Ford & 370 c.i. for Mopars. Must use OEM or OEM like pistons. Flat Top Pistons only.
Stroke 3.48” GM 3.5” Ford & Mopar – Rod 5.75” GM, Ford & Mopar - Series Approved O.E.M. - GM cylinder head. NO VORTEX HEADS, NO THROTTLE BODY HEADS. No Ford after market SVO heads. NO Mopar after market W-2 heads, 360 heads only. No aftermarket heads allowed. NONE. 190 intakes Valve. 150 exhaust valve. 305 heads can. No head work can be done in 2021 Pure Stock Heads. Only Machine shop work will be flat milled only. No Angle Milling. No cutting heads for larger springs. Valve guides or Bosses. Flat top pistons only, 2 or 4 valve reliefs. Cannot machine block, other than flat surface deck height on piston cannot be higher than block. No Zero piston deck height allowed. OPEN CHAMBER HEADS ONLY. NO close chamber heads allowed, NONE. Intake must have unaltered OEM 4-barrel cast iron Quadra Jet manifold. NO aluminum hi-rise, marine, or vortex intakes. NO porting polishing or alterations of any kind to head & intake. NO roller rocker arms. No roller Tip Rocker Arms. Must use stock rocker ratio 1.5” GM. Aluminum Water Pump and Crankshaft pulleys ok. May use G.M. – O.E.M. Quadra Jet Aluminum Intake. NO Aftermarket Intakes. Must have blow proof bell housing. G.M. - O.E.M. Heads only ! May use Screw in Studs & Guide Plates.
The only GM head numbers allowed are 14079267, 3986336, 3986339, 3986339X, 3986388, 3932441, 376445, 3928454, 3932454, 3876487, 3973487, 3973487X, 3973493, 3951598, 468642, 330862, 333882, 3998920, 3998991, 3998993, 3998997, and 3970126.
14014416,14022301,14022601,10110810. 305 heads ok any others must be approved by a official.
CAMSHAFT:
Lift not to exceed .450” at the valve on intake/exhaust. No Tolerance. This is basically a stock profile camshaft. NO special grinds are allowed. Hydraulic only. O.E.M. ONLY. NO bleed down lifters.
MOTOR CLAIM:
$500 EXCHANGE WITH 'GOOD' EXCHANGE ($50 goes to wrecker for pulling motor). This means, if you claim a motor yours MUST have good oil pressure, not running hot, and no smoke !
PROTEST:
Drivers only may protest. Protest must be made immediately following the race. To be elligible to protest you must have ran the series the prior 2 weeks. $150 protest fee. $50 goes to drivers point fund ( you must run in top 3 to protest).
CAR TECH:
Any car that wins any 4 “A” Features during the 2021 Racing season
must take (1) One Head off for inspection at Series Option. If a car is found illegal, the car and driver will be disqualified . NO $$$ Money and No Points for the night.
NOTE: IF FOUND ILLEGAL 2 TIMES, YOU CANNOT RACE IN THIS PURE STOCK SERIES AGAIN IN 2021.
FINAL NOTES:
Drivers, if it does NOT SAY IT, that doesn’t mean you, can do it. Check with the Series Tech. before you do anything to your cars that is questionable. OEM does not mean HIGH PERFORMANCE. If you cannot find the OEM parts at your local parts store, then chances are you cannot run it.
ANY QUESTIONS CALL:
Randall Standridge
479-970-99
