09/16/2025
2027 Ohio Valley Street Stock Series – OVSSS
Engine / Weight
1. Weight = 2,800 lbs. 8” maximum spoiler and spoiler fins.
2. No lead or weight allowed above decking.
3. Chevrolet Performance Part #88958602/19258602/88858602 (CT 350) Commonly referred to as “602” engine. 3. These engines are sealed at the intake manifold, cylinder head, front cover, and oil pan with Chevrolet Performance cap seals, which are installed at the Chevrolet Performance factory. Engines MUST be sealed in these six(6) locations with either Chevrolet Performance cap seals, or approved aftermarket seals.
4. The ONLY aftermarket seals allowed for competition are: a. GM twist off bolt engines will NOT be legal. b. Chevrolet Performance cap seals c. Crate USA Gen IV(Green) or Gen V(Black) cable seals, RUSH cable seals, IMCA cable seals allowed. d. NOTE: Crate USA Gen V (LIGHT BLUE) Seals are allowed. These seals will begin with number 406###. e. NO ACAS, NDRA, FASTRAK, Crate USA Gen I (Silver), Gen II (Blue) or Gen III (Yellow) will be allowed. f. To compete with ANY other seal/sealing system contact OVSSS for approval.
5. Crate engines must not be altered, modified, or changed from factory specs, unless any such alteration, modification, or change is approved by OVSSS. OVSSS authorized rebuilders will be notified of any such alterations, modifications, or change.
6. 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 in any OVSSS sanctioned event for the remainder of the season and future seasons, as determined by officials.
7. No changes are allowed to the engine including the intake manifold, heads, valve covers, front cover, oil pan, harmonic balancer, or any other part(s) on or in the engine.
8. No vacuum pumps. No evac systems of any type, including but not limited to the breather system style.
9. Engine’s Chevrolet Performance serial number, and when applicable, Crate USA build certification number, must be clearly visible to series technical inspectors.
Engine Option #1 Claim Procedure: • Driver’s finishing in the top 5 may claim/purchase the engine of any car finishing ahead of them. Claim fee is $7,000 or current cost from Chevrolet Performance dealer, whichever is greater. Engine claimed will be just as it comes from Chevrolet Performance and WILL NOT include any accessories, carburetor, water or fuel pump, wires, distributor, etc. Refusal of claim will result in immediate disqualification and penalized the same as an engine that was found illegal inside the seal system (infraction penalty #1 below). • Competitor, either driver or car owner, finishing in the top five of the feature race, must hand a OVSSS or track official $7,000 cash or current cost from dealer, whichever is greater, within ten (10) minutes after the checkered flag falls on the feature race. •
Engine will be removed, confiscated, and inspected by OVSSS officials at an agreed upon time and place upon being claimed. If legal, competitor claiming engine will receive the engine and will have to have engine re-sealed by a certified rebuilder of their choice. Series will provide seals for re-sealing. If engine is found to be illegal, driver being claimed will be penalized as outlined in infraction penalty #1 below and claiming driver will receive refund of their claim money.
Engine Infraction Penalties: 1) Any violation of the engine rules and/or factory specs inside the sealing system of the engine will result in the driver and/or owner being disqualified from that event and suspended from series competition for 365 days and pay a $2,500 fine. After that period, the driver can only compete in series events with an engine equipped with original factory GM seal bolts, CP cap seals, or Crate USA seals from an authorized rebuilder approved and authorized by OVSSS officials. Driver and/or owner will be notified in writing of series’ decision, via certified mail. All official’s decisions are final.
2) Any violation of the engine rules and/or factory specs outside the sealing system of the engine will result in the driver being disqualified from that event. Driver and/or owner may be suspended from series competition for up to but not more than 30 days and fined up to but not more than $500 at series’ officials’ discretion. Driver and/or owner will be notified in writing of series decision. All decisions are final.
Engine Setback Rule: 1. Engine must be mounted in stock location, in center of chassis. #1 spark plug must be in front of or centerline of upper ball joint. 2. Weight penalty of 50 lb. per ½” will be added forward of water pump for improper setback.
Carburetor Rules:
Either engine Option may run 1” maximum carburetor spacer, .040” tolerance. At no point may spacer extend into intake manifold area. Two (2) standard thickness carburetor gaskets, .070” maximum thickness allowed.
Engine may run one (1) four-barrel carburetor only. Chevrolet Performance 602 Circle Track Engines perform best with a quality 650 CFM carburetor. All carburetors must have conventional style floats along with needles and seats. NO individual cylinder tuning or equivalent allowed. All carburetors (for both engine options) must have conventional “Holley-style” straight or down leg boosters. NO exceptions. NO super bowl type carburetors allowed. Willy’s Equalizer Carburetor OK.
Distributor Rules: 1. Any standard distributor type electronic ignition allowed. MSD ok – 6 AL or 6 ALN only. 2. No magnetos and No crank triggers. 3. No electronic traction control devices allowed. Drivers finishing in the top 5 may protest another top 5 finishers box for $300. Series keeps $300 protest fee.
Starter Rule: 1. All cars must have a starter in working order. Starter must be mounted in stock location. NO reverse mount starters.
Exhaust Rules: 1. Collector type headers required. Must have four (4) tube into one (1) collector. 2. Mufflers not required UNLESS track mandates them. If mandated, mufflers must have some type of internal noise dampening characteristics i.e. baffles, extruded holes, screen, chambered, etc. Mufflers must meet local speedway’s noise decibel requirements. 3. No tri-y headers or merged headers allowed. 4. No square tube headers.
Fuel, Fuel Cell, and Fuel Pump Rules:
An approved fuel cell must be securely mounted in the trunk area of the car, inside a .20 gauge metal box supported by a minimum of 2” x 1/8” steel straps. 2. Gasoline, Racing Gas, or E-85 fuel allowed. No methanol or alcohol. None of the following chemicals are allowed in any fuel used for competition: No nitrous oxide, propylene oxide, nitroethane, MTBE, hydrazine, or ethylhexanol. a. Gasoline or Race Gas – specific gravity NOT to exceed .744 at 60 degrees. Any gasoline or race gas with a specific gravity of .745 or greater will be disqualified. Fuel is subject to testing on site, or fuel samples may be taken and sent to an independent lab for testing. b. E-85 – specific gravity not to exceed .7855 at 60 degrees. Any E-85 with a specific gravity of .7856 or greater will be disqualified. Fuel is subject to testing on site, or fuel samples may be taken and sent to an independent lab for testing. c. It is the competitor’s responsibility to know what is being put into their fuel cell. Drivers finishing in the top 5 may protest the fuel of car or cars finishing ahead of them. Protest fee is $250. Driver filing protest must have money with them and notify track or series official within 5 minutes of the checkered flag in that event. Fuel sample(s) will be taken and sent to an independent lab chosen by the series for testing. All official’s decisions and lab results are final and official. 5. Penalties for any illegal fuel are as follows: a. First Offense - $500 fine and 30-day suspension from any OVSSS sanctioned events b. Second Offense - $1,000 fine and 90-day suspension from any OVSSS sanctioned events c. Third Offense - $2,500 fine and 365-day suspension from any OVSSS sanctioned events. d. ALL OFFICIAL’S DECISIONS ARE FINAL, AND INDEPENDENT LAB USED WILL BE AT SERIES’ DISCRETION. 6. Mechanical fuel pump only. Must be mounted in stock location
Suspension:
104" wheelbase MINIMUM
Coil spring rear suspension cars must have full frame to center of the rear end . No combo suspensions allowed.
Camaro and nova front stub cars may be tube from the front clip back for leaf spring rear suspension ONLY Full frame leaf spring conversions are ok. No combo suspensions allowed.
Rear control arms to be : UPPER to be no more than 1” above or below stock length Lower to be no more than 1” above or below stock length.
1 shock per corner, total of 4 on car. Schrader Valve shocks are ok.
No canister shocks. No aluminum body shocks, No coil over shocks.
No coil over eliminators, Brake Floaters, J bars, Panhard Bars, Lift Bars or Birdcages. Upper ball joint to be even with #1 spark plug
Quick change rear ends are allowed. No strut cars.
BODY: A) Aluminum, Steel, and Composite Bodies are ok. 😎 Aftermarket nose pieces are ok. No wedge style late model noses C) 8" rear spoiler height max. D) Wagon roofs ok. E) Spoiler supports to be no more than 23 1/2 " long with no more than 3. F) 42" deck height max G) 3" rake on roof max on overall length (wagon roofs included) H) 78" max width from door to door at the top with 84" across the bottom. I) sail panels are to be no more than 45" in length
TIRES: Front Tires: American Racer Hard and Extra Hard ONLY Hoosier M30 and M60 ONLY Rear Tires: Right Rear American Racer extra hard and Hoosier M60 only. Left Rear is American extra hard and hard, Hoosier m30 or m60.
WEIGHT All lead must be white in color and marked with car number. 2800bs. MINIMUM weight.
Raceceivers are MANDATORY at all events when applicable.
Membership Fees - $50 per event
Annual Membership Fees - $500 annually
Schedule – 12 races per year (2 races per month April – October)
Payout-
1- $1200
2- $650
3- $450
4- $400
5- $350
6- $300
7- $250
8- $200
9- $175
10- $150
11-20 - $125
Average Payout - $5500
Hard Charger Award- $50 each race
Long Haul Award- $50 each race
Bad Luck Award - $50 each race
Im open to all constructive conversations?
