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KING OF DIRT RACING SMALL BLOCK MODIFIED RULES/WEIGHTS FOR LEBANON VALLEY

Engine Option #1:

DIRTcar Spec/Spec 358 Modified Engine

- Spec Heads

- Spec Intake

- Spec Exhaust

- DIRTcar 650 Rule Highly Recommended (Open Carb Rule Optional).

- Minimum Weight 2375 Lbs.

- 10.5 to 1 maximum compression ratio permitted.

- Refer to DIRTcar Rule Book for all other specifications.

- Please indicate weight on left side doorpost or cowl wit sticker or white duct tape with weight written on clear and visible in Black marker. Thank you.

 

Engine Option #2:

DIRTcar W-16 358 Modified Engine

- Minimum Weight 2300 Lbs.

- DIRTcar 650 Rule Highly Recommended (Open Carb Rule Optional).

- 10.8 to 1 max compression ratio permitted.

- Refer To DIRTcar Rule Book for all other specifications.

- Please indicate weight on left side doorpost or cowl wit sticker or white duct tape with weight written on clear and visible in Black marker. Thank you.

 

Engine Option #3:

Hunt’s LS3 Small Block Modified

- DIRTcar 650 Rule Highly Recommended (650 Only On LS3).

- Minimum Weight 2400 Lbs.

- Weight May Be Adjusted to 2450 at any point if need be to ensure competitive balance. 

- 11.5 to 1 max compression ratio permitted.

- Any Tri-Y type exhaust falls under this Option.

- Refer to Hunt’s Machine Shop for all other specifications on the LS3 engine.

- Please indicate weight on left side doorpost or cowl wit sticker or white duct tape with weight written on clear and visible in Black marker. Thank you.

 

Engine Option #4:

Ported Small Block Modified Engine

- Anything ported falls under this option. 

- Ported Intake or Ported Heads or Both.

- Non Ported Steel Heads fall under this option.

- Minimum Weight 2475 Lbs.

- Weight May Be Adjusted to 2500 at any point if need be to ensure competitive balance.

- DIRTcar 650 Rule Highly Recommended (Open Carb Rule Optional).

- Only 3 ring flat top pistons will be permitted. (DIRTcar Rule)

- Refer to DIRTcar Rule Book for all other specifications.

- Please indicate weight on left side doorpost or cowl wit sticker or white duct tape with weight written on clear and visible in Black marker. Thank you.