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*All hp numbers will be within 2% of the advertised number.
Mast Motorsports Handbuilt LS engines feature the best components and are assembled by professional machinists. All handbuilt engines feature ARP Main Studs, ARP Head Bolts or Studs and a balanced and blueprinted block.
The 850 Unlimited Race Gas Engine's heart and soul is the new 4.160 aluminum DART block. This monster engine has been developed in conjunction with HGK Racing from Riga Latvia for their Formula Drift Pro 1 BMW. Over the course of 3 years, we have fine-tuned this engine to be an absolute beast. It is a great choice for road course, drift, and autocross applications. It features a Mast Motorsports engineered camshaft that is custom ground on a Mast Motorsports billet cam core. The 466 foundation is a honed and decked DART aluminum block with a 4.250” forged Callies Dragonslayer rotating assembly with Diamond pistons that is topped off with Mast Black Label LS7 305 heads and a Mast Single Plane LS7 4500 Intake. ARP fasteners are used throughout and Smith Brothers pushrods ride on Crower solid roller lifters. The 850 Unlimited Race Gas Engine is at the top of a diverse line of Mast Motorsports handbuilt Race Engines. The 850 Unlimited Race Gas Engine peaks at the 850 horsepower mark and is one of the most powerful complete naturally aspirated turnkey LS crate engines available on the market today.
