Pennzoil 400

Intermediate Transition Update • v2.0
Las Vegas Motor Speedway
North Las Vegas, Nevada
DATE: Sunday, March 15, 2026
CO-FAVORITES: Larson / Bell (+550)
TV: FS1 / SiriusXM
STAGES: 80 / 165 / 267
🚨 SUB WATCH: Anthony Alfredo continues as the pilot for the No. 48 Ally Chevrolet. Alex Bowman remains sidelined as his vertigo recovery continues; a medical waiver is pending for playoff points protection.

Tech Section: 2026 Intermediate Configuration

NASCAR shifts from the short-track package to the 2026 Intermediate Aero Package for Las Vegas. Unlike the 3-inch spoiler used at Phoenix, Vegas utilizes a full spoiler and complete diffuser strakes to maximize downforce on the high-banked 1.5-mile oval.

Aero Mandate: Universal A-post flaps are now required. These body-post flaps deploy with roof flaps to prevent liftoff during spins. Underneath the flap, surfaces must be painted bright orange for high-visibility inspection.

Power Plant: The Next Gen engine will run an unrestricted 750 Horsepower configuration. Combined with the 20-degree banking, expect qualifying speeds to sustain the 185-188 mph range.

Goodyear Tire Specs: Teams are provided with a multi-zone compound designed for heavy wear over 50-60 lap runs on the abrasive Las Vegas asphalt. Tire management will be the defining variable as heat-related fall-off impacts handling late in the run.

Drivers & Team Hype

Ryan Blaney (#12): Coming off a dominant win at Phoenix, Blaney carries high momentum into Vegas. Penske’s intermediate aero strength makes him a heavy favorite to secure a multi-win streak.

Tyler Reddick (#45): Despite a fade at Phoenix, Reddick remains the series points leader. He is looking for a bounce-back on a track where his 23XI Toyota has shown elite long-run speed in simulations.

Chase Briscoe (#19): Under a "rebound watch" after three finishes of 36th or worse. Briscoe was a P4 finisher here in the Fall of 2025 and desperately needs a clean race to escape a provisional playoff deficit.