Late Model Sportsman Rules

For the 2023 season, we will operate our Late Model Sportsman division under South Boston Speedway’s Limited Sportsman rulebook.

You can find the full rulebook by CLICKING HERE. Below is a quick overview of the rules.


  • GM 602 Crate Engine w/650 cfm + 1″ Single Hole Spacer Plate 3,050/1,375
  • GM 603/ZZ4 Crate Engine w/390 cfm + 1″ Single Hole Spacer Plate 3,100/1,400
  • GM 604 Crate Engine w/500 cfm + 1″ Single or Two Hole Spacer Plate (HP) 3,125/1,425
  • Ford JR347 Crate Engine w/390 cfm + No Spacer Plate 3,025/1,325
  • GM Built (Steelhead) w/350 cfm + 1″ Super Sucker Spacer Plate 3,050/1,375


  • Penske-style Shocks Allowed as per NASCAR rulebook.Teams running all four (4) non-rebuildable oil/Pro/Koni/Afco will receive a 40-pound weight break split evenly left/right side.

No travel limiting devices allowed.

No bumpstops or coilbinding allowed.

Car must maintain a 4″ ride height. Subject to be checked at any time.

Maximum sway bar size of 1.750 will be permitted.

**We reserve the right to adjust or add weight or alter other rules to ensure competition.**

If anyone has any questions or concerns please contact Langley Austin at 276.613.4208 or email [email protected]