NHRA Adds Blown Nitro Engine Combo for Top Alcohol Classes in 2026

• The RacingJunk Editors


• 30 May 2025

This update aims to offer a valuable bridge for teams looking to eventually make the leap into the nitro ranks of Top Fuel and Funny Car.

Starting in 2026, teams in both Top Alcohol categories will be allowed to run supercharged engines on nitromethane fuel—joining the existing options of supercharged methanol and injected nitro combinations. NHRA officials say the move not only adds flexibility but also provides a crucial training ground for teams transitioning to the pro-level nitro categories of the NHRA Mission Foods Drag Racing Series.

The new blown nitro setup comes with strict parameters. Nitromethane content is capped at 85%, and the use of any artificial fuel heating or cooling is strictly prohibited. Additional regulations include:

• Supercharger Overdrive: Limited to a maximum of 16.99% (1.1699) of engine speed

• Ignition System: One magneto, one coil, and one points box allowed

• Clutch Setup: Max of four clutch discs and six primary levers—no clutch management systems permitted

• Safety Compliance: Vehicles must use the Electimotion Safety Box for quarter-mile runs

• Funny Car Body Specs: Must meet current NHRA Nitro Funny Car requirements

This change not only enhances the competitiveness of the Top Alcohol classes but also reflects the NHRA’s continued focus on innovation and talent development.

For full rules and updates, visit NHRA.com.