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Mark Broviak and the World’s Fastest Allison-Shifted Truck

Danville Performance’s Mark Broviak made history by piloting his Duramax-powered Pro Mod into the 8s using a five-speed Allison transmission and a Stainless S485 Godfather turbo—setting records with a 5.54...

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Making A 7.3L A Contender With Our 5-Blade S480

Dawson Hendricks defied expectations by swapping his S476 for a Stainless Diesel 5-blade S480 on his 7.3L Power Stroke—and saw faster spool, lower EGTs, and 65 psi of boost en...

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