Uploaded September 2026 | Updated September 2026, 1 week ago
The Gen 4 Grand National is arriving in the 2026 Season 4 Update! 🏁
Gen 4 Grand National car represent a level lower from the top stockcar cars during Gen-4 era, before the transition to the Car of Tomorrow (CoT). While visually sharing the same aerodynamic sheet metal bodies as their Cup Series counterparts, the Grand National cars were built on a shorter 105-inch wheelbase. Under the hood, the series mandated a 9:1 compression ratio and smaller 390 CFM carburetors, capping the 358 cubic-inch V8s to around 600-650 horsepower. Lighter, slightly less powerful than Cup Series cars of that era, these highly agile cars required massive momentum preservation and smooth pedal inputs to maximize performance.
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The Gen 4 Grand National is arriving in the 2026 Season 4 Update! 🏁
Gen 4 Grand National car represent a level lower from the top stockcar cars during Gen-4 era, before the transition to the Car of Tomorrow (CoT). While visually sharing the same aerodynamic sheet metal bodies as their Cup Series counterparts, the Grand National cars were built on a shorter 105-inch wheelbase. Under the hood, the series mandated a 9:1 compression ratio and smaller 390 CFM carburetors, capping the 358 cubic-inch V8s to around 600-650 horsepower. Lighter, slightly less powerful than Cup Series cars of that era, these highly agile cars required massive momentum preservation and smooth pedal inputs to maximize performance.
Subscribe to this channel to catch the newest upcoming events, behind-the-scenes development info, and new features/content from iRacing.com! youtube.com/subscription_center?add_user=iracingtv
Find out what we're all about: iracing.com/overview
Facebook: facebook.com/iracing
Twitter: twitter.com/iracing
Instagram: instagram.com/iracingofficial
