11/5/2020
Modified Racing Series
engine rule change for 2021
![engine rule change for 2021](https://dy5vgx5yyjho5.cloudfront.net/images/v2/s1136x640-dF8R2rzD5E7jbx570463.jpg)
2021 Engine Rules Addendum A. NASCAR Spec Engines must be sealed and meet all NASCAR specifications, this includes all carburetor specs. B. All Aluminum Head Engines must use a NAS...
End of news for 2020