Altereds - Normally Aspirated

• All cars weighed with driver.
  
• One engine, non supercharged.
  
• Minimum wheel base of 145"
  
• Fuel limited to gasoline or alcohol.
  
• Mechanical fuel injection or carburetors allowed. No EFI.
  
• Wheelbase is limited to 125" with 2" variance from side to side.
  
• No portion of the driver may be rear of rear axle centre line.
  
• Any trans limited to four forward speeds.
• Any clutch meeting SFI safety specs. Multi stage clutches prohibited.
  
• Driver must release foot release clutch. Pneumatic, hydraulic, electronic or other device may in no way affect operation of the clutch.
  
• Hand controls for the physically challenged permitted.
  
• Standard safety rules apply

Class  -  Weight break and restrictions .......................... New starting index

A/A

• 3.40  or more lbs. per cube  1500 min. Hemi V8                 7.56 index
  
• 3.35  or more lbs. per cube  1500 min. Canted valve V8
  
• 3.30  or more lbs. per cube  1500 min. Inline valve V8

B/A

• 4.50  or more lbs. per cube  1500 min. Hemi V8                 8.17 index
  
• 4.45  or more lbs. per cube  1500 min. Canted valve V8
  
• 4.40  or more lbs. per cube  1500 min. Inline valve V8

C/A

• 6.60  or more lbs. per cube  2100 min. Hemi V8                 8.49 index
  
• 6.55  or more lbs. per cube  2100 min. Canted valve V8
  
• 6.50  or more lbs. per cube  2100 min. Inline valve V8

D/A

• 7.60  or more lbs. per cube  2100 min. Hemi V8                 8.58 index
  
• 7.55  or more lbs. per cube  2100 min. Canted valve V8
  
• 7.50  or more lbs. per cube  2100 min. Inline valve V8

E/A

• 8.60  or more lbs. per cube  2100 min. Hemi V8                 9.06 index
  
• 8.55  or more lbs. per cube  1500 min. Canted valve V8
  
• 8.50  or more lbs. per cube  1500 min. Inline valve V8

F/A

• 9.60  or more lbs. per cube  2100 min. Hemi V8                 9.34 index
  
• 9.55  or more lbs. per cube  2100 min. Canted valve V8
  
• 9.50  or more lbs. per cube  2100 min. Inline valve V8

G/A

• 10.60  or more lbs. per cube  2100 min. Hemi V8               9.72 index
  
• 10.55  or more lbs. per cube  2100 min. Canted valve V8
  
• 10.50  or more lbs. per cube  2100 min. Inline valve V8

H/A

• 8.50  or more lbs. per cube  2000 min.  V4 & V6 engines    9.17 index

I/A

• 5.50  or more lbs. per cube  1100 min.                                 8.83 index
  inline 6 cylinder engines

J/A

• 5.50  or more lbs. per cube  1100 min.                                 9.00 index
  inline 4 cylinder engines  2 valves per cylinder

K/A

• 10.00  or more lbs. per cube  1600 min.                               9.98 index
  inline 4 cylinder engines   2 valves per cylinder
  
• 10.50  or more lbs. per cube  1600 min.
  inline 4 cylinder engines   4 valves per cylinder

L/A

• 10.60  or more lbs. per cube  1250 min.                             10.50 index
  opposed 4 cylinder engines
  Any engine location permitted if original engine design
  is in a sedan chassis.

R/A

• 24.60  lbs. per cube Rotary engine normally aspirated      9.65 index