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Ringbrothers’ INVADR: The 2,000-HP Buick Grand National, Explained

Ringbrothers’ INVADR pairs a twin-turbo 3.8-liter Buick V6 with a six-speed manual. Its reported current tune makes 1,246 hp at the rear wheels; 2,000 hp is the engine’s stated capability at 50 psi.
Entry543 Date Time2 min MechanicCarCody Team
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Ringbrothers’ INVADR is a custom 1987 Buick Grand National unveiled at the 2024 SEMA Show. Its reported current tune produces 1,246 hp and 1,000 ft-lb at the rear wheels; the 2,000-hp figure describes the engine’s stated capability at a higher boost level, not the car’s reported current output.

How much horsepower does the Ringbrothers INVADR make?

Ringbrothers’ November 5, 2024 release gives two figures for the build, under different conditions:

Configuration Reported output What the figure means
Current E85 tune at 32 psi 1,246 hp and 1,000 ft-lb at the rear wheels The release’s reported output for the car’s current tune.
Engine capability at 50 psi Up to 2,000 hp A stated capability at higher boost, not the reported output of the current tune.

The distinction matters: the headline 2,000-hp number is not a claim that INVADR is presently running that output. The builder’s release reports no instrumented acceleration or top-speed test, so the output figures should not be mistaken for independently verified performance testing. Ringbrothers’ release, reproduced by MotorTrend

What engine is in INVADR?

The car uses a Duttweiler Performance 3.8-liter Buick V6, described in the release as all-aluminum, with twin Precision 62 mm turbochargers. Its listed engine components include six-bolt mains, custom hand-ported aluminum cylinder heads, a Bryant Racing billet crankshaft, and a bespoke intake manifold. The E85 fuel and boost level are part of the stated current-tune context; the 50-psi figure refers to the engine’s claimed potential.

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How is the power delivered?

A Bowler TREMEC T-56 Magnum six-speed manual transmission sends power through a carbon-fiber driveshaft to the rear wheels. The drivetrain sits in a custom Roadster Shop chassis, with a four-link rear suspension and Penske three-way adjustable shocks at all four corners.

What chassis, brakes, wheels, and tires does it use?

  • Brakes: Brembo six-piston calipers and 394 × 36 mm carbon-ceramic rotors.
  • Wheels: HRE 528-series three-piece wheels, 19 × 10.5 inches at the front and 20 × 13 inches at the rear.
  • Tires: Michelin Pilot Sport Cup 2.
  • Service feature: An integrated nitrogen-powered air-jack system can lift the car 15.1 inches for tire changes.

These are specifications for INVADR, a one-off custom build—not a fitment recommendation for a stock Grand National or another vehicle. Tire and wheel sizes should be checked for the specific car before purchase. The build details appear in Ringbrothers’ release reproduced by MotorTrend.

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What makes the bodywork and finish distinctive?

Ringbrothers says the project took 5,000 hours. The changes include stainless-steel front and rear bumpers in place of the original plastic pieces, machined aluminum bumper guards, subtly adjusted front-fender angles, extended rocker panels, and a Ringbrothers-designed carbon-fiber hood scoop intended to help extract heat. The custom BASF Glasurit waterborne finish is called “Dark Vader Gray.”

What did Ringbrothers say about its performance?

Co-owner Mike Ring described the car’s acceleration as “nothing short of violent” and said it “may well be the fastest car we’ve built to date.” Those are the builder’s promotional comments, not a timed test or a verified speed record. The available release does not provide instrumented acceleration or top-speed results. The release and quoted remarks

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When was INVADR introduced?

Ringbrothers unveiled INVADR, based on a 1987 Buick Grand National, at the 2024 SEMA Show. SEMA’s event material and a Gentex announcement also identify the build and its 1,246-hp description: SEMA’s announcement and Gentex’s announcement. These sources establish the build’s specifications around its 2024 debut; they do not establish its present mechanical condition, sale status, price, or road legality.

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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

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