This 1972 Pontiac Grand Prix Convertible began life as a hardtop before undergoing a professional convertible conversion. The project started in 2007 and was completed in 2014, with extensive documentation including photos and receipts covering the entire build. Since Pontiac never produced a factory '72 Grand Prix convertible, this one-of-a-kind creation stands out as an exceptionally rare custom.
Finished in a glossy ripple-black base, the paint has a deep shine that pairs perfectly with the stock wheels, redline tires, and a tasteful red pinstripe that runs the length of the car. The black canvas convertible top complements the look nicely. Brightwork is in excellent condition, including the front grille and both front and rear chrome bumpers. All badges, tailpipes, bodylines, and panel gaps appear correct and well aligned. The quality of the conversion is impressive-unless you knew these cars well, you'd never guess this Grand Prix didn't leave the factory as a convertible.
Inside, the black interior is clean and largely original in appearance. The vinyl seats, door panels, carpeting, and dashboard are all in very good condition. A stock center console houses the original-style floor shifter, and the factory steering wheel sits ahead of an easy-to-read gauge cluster. The AM radio remains in place and still plays through the single factory dash speaker. Tucked behind the center console is an 8-track player, an option that would have been period-correct equipment in 1972. In the trunk, you'll find a matching spare wheel and tire along with a fire extinguisher. Overall, the interior maintains a very authentic, original feel.
Under the hood, the engine bay remains mostly stock and nicely detailed, right down to the correct Pontiac blue engine paint. Power comes from what is believed to be the original 455 cubic-inch V8, reportedly upgraded with a mild cam. A stock intake manifold carries a 4-barrel Quadrajet carburetor. Power is routed through a TH400 3-speed automatic transmission to a 12-bolt rear axle with 3.07 gears. The car rides on stock-style suspension enhanced with QA1 adjustable coilovers. Pontiac Rally II wheels sit at all four corners, backed by front power disc brakes and rear power drum brakes. For a smooth tone, the engine breathes through stock-style manifolds, dual exhaust, and aftermarket mufflers.
Highlights:
455 Cubic-Inch V8 (Believed To Be Original)
TH400 3-Speed Automatic Transmission
12-Bolt Rear Axle With 3.07 Rear Gear Ratio
Stock-Style Suspension With QA1 Adjustable Coilovers
Front And Rear 15-Inch Pontiac Rally II Wheels
Front Power Disc Brakes / Rear Power Drum Brakes
Stock Exhaust
Glass / Window Felts / Weather Striping / Door Seals-Great Condition
Power Convertible Top
Power Steering
Cruise Control
Heat / Defrost / Air Conditioning
Power Window / Seats
Tilt Steering Wheel
AM Radio
Factory Build Sheet / Reproduction Build Sheet / PHS Documentation
Owner's Manual / Original Window Sticker / Title Documentation
Receipts / Restoration Photos / Dyno Sheet
Here's a truly unique vehicle that enthusiasts will appreciate. Once a hardtop, it's now likely the only 1972 Pontiac Grand Prix Convertible in existence-and it was done right. If you're looking for a standout custom cruiser that no one else will have, this is your chance. Call Today!
