440 Cu. In. Limit, ( Iron Blocks ). ( Aluminum blocks are allowed for small-block Chevrolet and Donovan Chrysler Hemi) SFI spec 7.2 lower engine restraints sportsman diaper or better mandatory on all dragsters.

Cast-iron heads only. ( No Aluminum )

Multi-Disc Clutch, No transmissions Allowed, direct- drive only, Clutch and flywheel meeting SFI Spec 1.2, 1.3, or 1.4, flywheel shield meeting SFI Spec 6.2 or 6.3 mandatory.

Reverser strongly recommended, reverser blanket meeting SFI Spec 4.1 mandatory.

Only one magneto, one spark plug per cylinder, one fuel pump and hat nozzles only. ( like it use to be 60's style )

12 inch wide tires only. ( Any Manufacture )

NO electronic, pneumatic, or hydraulic-assisted devices are allowed.

NHRA chassis certification must be 2.6 ( Minimum ) 2.4B chassis certification preferred.

lateral head restraint meeting SFI spec 45.1 mandatory.

All drivers must have a valid NHRA competition license for 7.50 ET ( minimum class 4A ) 3A preferred.

All NHRA general safety rules apply.