Open Invitation to All Regional Classes

The Southwest Division welcomes all regional level classes at all of our Majors Events, excluding only the Hoosier Super Tour Events.  Your participation enriches our race events and contributes to the vibrant growing SCCA racing community.

If you have a regional class car that is not listed and is not covered in the GCR, please contact roadracing@texasscca.com to get your car added to this list.

Regional Class Rules

Prototype 1 (P1) Drivers not wishing to modify their P1 cars for the 2025 SCCA Prototype Class may continue to
participate in SowDiv Majors and Regional races as a regional-only class. Cars must comply with the
2024 SCCA GCR P1 preparation rules and specifications and must meet or exceed the safety
requirements of Section 9 of the current SCCA General Competition Rules.
(Updated 01/06/2025)
Spec Corvette (SC) Class to allow C5-generation Corvettes to compete in SCCA Road Race events as a specific regional-only
class. Cars must comply with the Spec Corvette rules and specifications found here:
Rules: SC Rules
Cars must also meet or exceed the safety requirements of Section 9 of the current SCCA General
Competition Rules, and must have a SCCA-issued log book.
(Updated 01/06/2025)
Spec Boxster (SPB) Cars must comply with the Porsche Club of America Spec Boxster ruleset, and must meet or exceed the safety requirements of Section 9 of the current SCCA General Competition Rules. Link to PCA Rule Book below.
Rules: PCA Rule Book
(Updated 12/29/2023)
Spec RX7 (SRX7) Class for 1981-1985 Mazda RX-7 with 12A rotary engine. Cars must comply with the SCCA Washington D.C. Region SPEC-RX7 RULES, EFFECTIVE Jan 1, 2023, and must meet or exceed the safety requirements of Section 9 of the current SCCA General Competition Rules. Link to the WDCR rules below.
Rules: SRX7 Rules
(Updated 12/29/2023)
Improved Touring E (ITE) Cars eligible for ITE are production-based cars with fenders and doors that are not currently eligible for any other SCCA Road Racing class. Suitability of any car for ITE is subject to the approval of the Chief Steward and Chief Scrutineer.

Cars eligible for ITE must meet the following rules:

  1. Any tub chassis production vehicle running with DOT tires.
  2. Preparation Rules: International Sedans may modify the floor pan/rocker panel sections.
  3. Cars must meet or exceed the IT safety requirements of Section 9 of the current General Competition Rules.

(Updated 12/29/2023)
Improved Touring J (ITJ) Catch-all class for Lemons and Chump Cars (now ChampCar) that can’t be classed elsewhere. ITJ eligible cars must be mass produced four (4) wheeled passenger cars that are gasoline powered with production-based engines, and be prepared to one of the following rulesets (with exceptions noted below). All cars must also meet or exceed the safety requirements of Section 9 of the current SCCA General Competition Rules.

Lemons Rules: Lemons Rules
ChampCar Rules:  ChampCar Rules:

Exceptions to above rulesets:

  • External “props” such as shark fins, mannequin legs, butterfly wings, cow horns, etc. are not
    allowed.
  • No Death Race, Animal House, Military or “armed” vehicles are allowed. No exceptions.
  • Body damage that presents no danger to the driver or other participants may be allowed, at the
    discretion of the Chief of Tech and/or the Chief Steward.
  • Cars must have a minimum weight of 1,800 lbs. and a maximum weight of 4,000 lbs., as raced.

(Updated 12/29/2023)
Formula 1000 (FB) Cars must comply with the 2019 SCCA GCR Formula 1000 preparation rules and specifications, except as may be modified in the current-year GCR FA spec line. All cars must also meet or exceed the safety requirements of Section 9 of the current SCCA General Competition Rules.

Rules:  Formula 1000 (FB) Preparation Rules

(Updated 12/29/2023)
Formula Mazda (FM) Cars must comply with the Formula Mazda FM Rules below, and must meet or exceed the safety
requirements of Section 9 of the current SCCA General Competition Rules.Rules:  Formula Mazda Rules

(Updated 12/29/2023)
Club Ford (CF) Class for vintage Formula Ford cars. Cars must comply with the following rules and meet or exceed the safety requirements of Section 9 of the current SCCA General Competition Rules.

Rules: Club Ford Rules & Specifications

(Updated 12/29/2023)
Legends Cars (LC) Cars must comply with the current INEX Rulebook and meet or exceed the safety requirements of Section 9 of the current SCCA General Competition Rules.

Rules: Legends Rule Book

(Updated 12/29/2023)
Spec Miata NASA (SMT) Class to allow NASA SM cars to compete in SCCA Road Race events without having to purchase Hoosier tires. Cars must comply with the current NASA Spec Miata rules and specifications, must run the NASA-specified Toyo tires, and must meet or exceed the safety requirements of Section 9 of the current SCCA General Competition Rules.

Rules: SMT Rules

(Updated 12/29/2023)