Image credit: © conceptcarz.com (Reproduction Or reuse prohibited).

1951 Allard J2 Navigation
English-based Sydney Allard saw the potential of the United States market, realizing it was in much better shape financially and rather lacking in quality sports cars. A special model intended for the American market was soon produced - the J2. It was fitted with a new independent rear suspension. They were available with a large choice of different American engines, including a new Cadillac V8, which was much more powerful than the Ford units used before. Importing American engines just to ship them back across the Atlantic proved troublesome, so soon after US-bound Allards were shipped engine-less and fitted out in the United States. They proved successful, and the American mechanicals meant that, unlike more exotic British sports cars, they were familiar beasts for mechanics to work on. This example is powered by a 395 cubic-inch V8 engine. The current owner purchased this car partially restored in 2001. A complete restoration was completed in 2003.
This J2 Allard, serial number 99J2121, was produced in August 1951 and sold to a buyer in Chester, England. It was initially fitted with an Ardun-Mercury engine, which quickly expired. That was replaced with a Pilot V8, producing 85 horsepower. The car then passed through seven owners in the 1950s.
In 1968, Bob Judd, an American, purchased the car for 400 GBP and replaced the flathead with a more current Ford 289 CID Cobra engine. Judd consulted with the craftsman who originally assembled the car. He wondered if the mechanical updating would be considered automotive sacrilege and was told that if it would make the car faster, Sydney Allard would surely have approved. The outcome was christened the Ultimate Allard.
The car was sold in 1969 to Otto Bowden of Jacksonville. It was featured in a series of Champion Spark Plug ads. In 2008, the current owners acquired the car and determined the engine was not the HiPo 271-horsepower version and had a correct Cobra 300+ hp engine installed.
This Allard is the only one in the world with a Ford 289 ci HiPo Cobra engine which generates over 300 horsepower.
This car is one of just 43 remaining examples of 90 originally built. It has Dunlop Racing 6.50 x 16 tires, two sets of leather seats, tools, removable mud-flaps for the front fenders, triple panel heat and sound insulation for the firewall and floor, race-worthy lap belts, a set of racing goggles, a racing-style, quick release steering wheel, and the original full windscreen with dual electric wipers. The car has its original aluminum bodywork.
In 1968, Bob Judd, an American, purchased the car for 400 GBP and replaced the flathead with a more current Ford 289 CID Cobra engine. Judd consulted with the craftsman who originally assembled the car. He wondered if the mechanical updating would be considered automotive sacrilege and was told that if it would make the car faster, Sydney Allard would surely have approved. The outcome was christened the Ultimate Allard.
The car was sold in 1969 to Otto Bowden of Jacksonville. It was featured in a series of Champion Spark Plug ads. In 2008, the current owners acquired the car and determined the engine was not the HiPo 271-horsepower version and had a correct Cobra 300+ hp engine installed.
This Allard is the only one in the world with a Ford 289 ci HiPo Cobra engine which generates over 300 horsepower.
This car is one of just 43 remaining examples of 90 originally built. It has Dunlop Racing 6.50 x 16 tires, two sets of leather seats, tools, removable mud-flaps for the front fenders, triple panel heat and sound insulation for the firewall and floor, race-worthy lap belts, a set of racing goggles, a racing-style, quick release steering wheel, and the original full windscreen with dual electric wipers. The car has its original aluminum bodywork.
2023 Gooding & Company : Pebble Beach
Pre-Auction Estimates :
USD $275,000-USD $350,000
Lot was not sold
2017 Bonhams : The Amelia Island Auction
Pre-Auction Estimates :
USD $250,000-USD $325,000
Sale Price :
USD $275,000
2016 Bonhams : Quail Lodge
Pre-Auction Estimates :
USD $325,000-USD $375,000
Lot was not sold
2013 Gooding and Company - The Amelia Island Auction
Pre-Auction Estimates :
USD $250,000-USD $300,000
Sale Price :
USD $330,000
1951 Allard J2 Auction Sales
Recent Sales of the Allard J2
(Data based on Model Year 1951 sales)
1951 Allard J2X Chassis#: 3074 Sold for USD$346,000 2023 Bonhams : Quail | |
1951 ALLARD J2 Chassis#: 1788 Sold for USD$313,000 2022 Gooding & Company : Amelia Island Auction | ![]() ![]() |
1951 Allard J2 Roadster Chassis#: 99J2123 Sold for USD$207,200 2021 Bonhams : Quail Lodge | ![]() ![]() |
1951 Allard J2 Chassis#: 99J 1787 Sold for USD$224,000 2021 RM Sothebys : Monterey | ![]() ![]() |
1951 Allard J2 Roadster Chassis#: 99J1974 Sold for USD$225,213 2018 Bonhams : Goodwood Revival | |
1951 ALLARD J2 Chassis#: 99J2121 Sold for USD$275,000 2017 Bonhams : The Amelia Island Auction | ![]() ![]() |
1951 Allard J2X Replica Sold for USD$16,500 2015 Russo & Steele : Monterey | |
1951 Allard J2 Chassis#: 99J2121 Sold for USD$330,000 2013 Gooding and Company - The Amelia Island Auction | ![]() ![]() |
1951 Allard J2 Chassis#: J2089 Sold for USD$243,432 2011 RM Auctions - London | |
1951 Allard J2 Sold for USD$154,000 2009 Automobiles of Amelia Island | ![]() ![]() |
1951 Allard J2 Chassis#: 1912 Sold for USD$308,000 2008 Gooding & Company | ![]() ![]() |
1951 Allard J2-X LeMans Race Car Sold for USD$313,500 2006 Monterey Sports & Classic Car Auction | ![]() ![]() |
1951 ALLARD J2 CADILLAC LEMANS RACE CAR Chassis#: 2 Sold for USD$330,000 2004 Barrett-Jackson - Scottsdale 2004 |
Allard J2s That Failed To Sell At Auction
1951 Allard J2's that have appeared at auction but did not sell.
Vehicle | Chassis | Event | High Bid | Est. Low | Est. High |
---|---|---|---|---|---|
1951 ALLARD J2 | 99J2121 | 2023 Gooding & Company : Pebble Beach | $275,000 | $350,000 | |
1951 Allard J2 | 99J 2123 | 2020 RM Sothebys : Shift/Monterey | $300,000 | $350,000 | |
1951 ALLARD J2 | 99J2121 | 2016 Bonhams : Quail Lodge | $325,000 | $375,000 |
Vehicles With Comparable Market Values
Similar sales to the $252,757 range.
1999 Mercedes-Benz G 500 Classic Cabriolet Chassis#:WDB4632061X118986 Sold for $252,000 2025 Broad Arrow Auction : Amelia Island | |
2006 Mercedes-Benz SLR McLaren Coupe Chassis#:WDDAJ76FX6M000827 Sold for $252,000 2025 Broad Arrow Auction : Amelia Island | |
1981 Duesenberg II Model J Boattail Speedster Chassis#:1ETSW12B1BDJ00125 Sold for $252,000 2025 Broad Arrow Auction : Amelia Island | |
1956 Porsche 356 A 'European' Cabriolet Chassis#:61063 Sold for $252,000 2025 Gooding & Company : Amelia Island | |
1966 Ferrari 330 GT 2+2 'Series 2' Berlinetta Coachwork by Pininfarina Chassis#:08917 Sold for $250,369 2025 Bonhams : Les Grandes Marques du Monde à Paris | |
1938 Horch 830 BL Chassis#:847678 Sold for $250,369 2025 Bonhams : Les Grandes Marques du Monde à Paris | |
1958 Aston Martin DB2/4 Mk III Chassis#:AM300/3/1744 Sold for $250,400 2025 RM Sothebys : Paris | |
1969 Lamborghini Islero S by Marazzi Chassis#:6411 Sold for $250,400 2025 RM Sothebys : Paris | |
1956 Chevrolet Corvette Custom Convertible Chassis#:e56s004416 Sold for $253,000 2025 Mecum : Kissimmee | |
1959 Chevrolet Impala Custom Chassis#:f59s298716 Sold for $253,000 2025 Mecum : Kissimmee | |
1974 FORD BRONCO CUSTOM SUV Chassis#:U15GLU86345 Sold for $253,000 2025 Barrett-Jackson : Scottsdale | |
1972 CHEVROLET K10 CHEYENNE SUPER CUSTOM PICKUP Chassis#:CCE142A151912 Sold for $253,000 2025 Barrett-Jackson : Scottsdale | |
2013 CHEVROLET CORVETTE CUSTOM SPLIT-WINDOW COUPE Chassis#:1G1YN2DT5D5800007 Sold for $253,000 2025 Barrett-Jackson : Scottsdale | |
1956 Bentley S1 Continental Fastback Sports Saloon by H.J. Mulliner Chassis#:BC9BG Sold for $250,360 2024 RM Sothebys : London | |
1988 Porsche 911 Turbo Cabriolet Chassis#:WP0EB0934JS070507 Sold for $252,000 2024 Broad Arrow Auctions : Chattanooga Auction | |
1963 CHEVROLET CORVETTE CUSTOM SPLIT-WINDOW COUPE Chassis#:OK1071382528 Sold for $253,000 2024 Barrett-Jackson : Scottsdale Fall | |
1966 CHEVROLET CORVETTE CUSTOM COUPE Chassis#:194376S123156 Sold for $253,000 2024 Barrett-Jackson : Scottsdale Fall | |
1926 Duesenberg Model A Dual-Cowl Touring by Millspaugh & Irish Sold for $253,000 2024 RM Sothebys : Hershey | ![]() ![]() |
2014 Ferrari 458 Speciale Coachwork by Pininfarina Chassis#:ZFF75VHB000202279 Sold for $251,521 2024 Bonhams : The Zoute Sale | |
1965 Chevrolet Corvette Coupe Chassis#:194375s114744 Sold for $253,000 2024 Mecum : Dallas |