

2/20/2025
Willamette Speedway
Limited Late Model Rules Update:
Attention Limited Late Model teams:
We have some changes for you for the 2025 season:
• Dry Sump systems will be allowed.
• 18°-23° engine with steel blocks.
• Weight rule:
2350 lbs after race with driver for the four bar rear or swing arm suspensions.
2300 lbs after race with driver for cars on three link and leaf rear suspensions.
• ONE UNALTERED SHOCK AND SPRING PER WHEEL.
• NO BLADDER OR BULB STYLE SHOCKS.
• NO Bump Stops
• NO Stacked Springs
• NO Sliders
• NO Spring Rods
• Schrader Valves ARE permitted. No change to that rule.
We are going to allow a 10" sideboard with 4" bend at 90° at top of board. Boards must be CLEAR Lexan and mounted on the LEFT SIDE ONLY. Sideboards will NOT extend past the back of the seat and will be no further out than the rear spoiler.
No change to current rear spoiler rule.
Tires:
•Rear tires MUST be American Racer EC84 OR Hoosier 3035 or 3045
•Front tires will be American Racer EC 21 or EC 84 OR
Hoosier 3025, 3035 or 3045.
NO TRACTION CONTROL.
Submitted By: Larry Adams