The NHRA Technical Department recently made changes to the Class Guide.

2015 Dodge Drag Pak Challenger 392 400/400 was recently added.

2015 Dodge Drag Pak Challenger 426 460/460 was recently added.

68-71 Mopar 340 275 added Edelbrock head 60767 for SS only

87-92 GM 305 with the 081 casting cylinder head added Dart 10021070 and World 046250 for SS only.