Fuller Moto Builds 1,250-Horsepower V16 Engine

Fuller Moto joined two Chevy LS V8 engines into a 16-cylinder powerplant displayed at the 2026 SEMA Show.

Updated on Nov. 5, 2026 in Car Culture

A long dark multi-cylinder engine block with two angled cylinder banks and curving tubular exhaust headers, photographed on a metal stand in a plain concrete workshop. — Fuller Moto joined two 427-cubic-inch Chevy LS V8 engines from BluePrint Engines into a single 854-cubic-inch V16 rated at a claimed 1,250 horsepower, shown at the 2026 SEMA Show. AI Illustration. Upload story photo >

Fuller Moto joined two 427-cubic-inch LS V8 engines from BluePrint Engines into a single 16-cylinder engine. The V16 displaces 854 cubic inches and is rated at a claimed 1,250 horsepower.

Why it matters

The project shows how existing V8 engine blocks can be combined into a much larger powerplant using custom fabrication and 3D-printed parts. The engine was displayed at BluePrint Engines' booth at the 2026 SEMA Show in Las Vegas.

The V16 is built from two 427-cubic-inch LS V8 engines, combining 854 cubic inches (about 14 liters) into one powerplant rated at a claimed 1,250 horsepower. The figure is a manufacturer-style claim, and no independent testing is cited.

The players

Fuller Moto

Fuller Moto is the builder behind the custom V16 engine project and plans to install it in a Cadillac Fleetwood.

BluePrint Engines

BluePrint Engines is an engine builder that supplied the two 427-cubic-inch LS V8 engines used in the V16 and displayed it at the 2026 SEMA Show.

The details

Fuller and his team created a single 16-cylinder engine by joining two V8s, with two banks of cylinders on either side of a long structure and custom exhaust headers. The mating required custom-fabricated, 3D-printed, and billet components, and the finished V16 is complete.

2026 SEMA Show: the V16 was displayed at BluePrint Engines' booth in Las Vegas.

Roadmap

The project extends the modular Chevrolet LS V8 platform by combining two of its engines into a 16-cylinder configuration. It reflects a long-running hobbyist and aftermarket practice of building oversized engines from proven production blocks.

The V16 is a custom build rather than a production option, so it has no buyer-facing price or availability. Readers interested in similar projects would need to work with specialty fabricators, and the Cadillac installation has no announced completion date.

The takeaway

Custom engine swaps can combine proven production blocks into powerplants far larger than the originals, but claimed horsepower figures typically await independent verification. Enthusiasts following these projects should treat published output numbers as the builder's own rating.