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1931 Cadillac Series 370-A Twelve Fleetwood Roadster

Unemployment nearly doubled to 16.3 percent in 1931 and America began to realize the long-term economic effects of the stock market crash of 1929. Despite the economic downturn, Cadillac, like other prestige manufacturers, found itself in the middle of the 'cylinder wars.' After introducing a V-16 in 1930, it added a V-12 model in 1931. The Twelve and Sixteen shared parts as well as dimensions and angles, so production didn't have to proceed from scratch. While the horsepower of the 368 cubic-inch, 135 horsepower V-12 was well below that of the 452 cubic-inch, 175 horsepower V-16, its performance was similar with 285 lb-ft of torque and a top speed of more than 80 miles-per-hour.

A bright white Series 370 V-12 roadster like this one was driven by Willard 'Big Boy' Rader and paced the 1931 Indianapolis 500. As the flagship, the V-12 and V-16 garnered all the fanfare, but the V-8 powered models sold in steady numbers helping Cadillac's bottom line during difficult economic times.

This particular car was bodied in Fleetwood, Pennsylvania, and shipped to Don Lee Cadillac in San Francisco on October 29th of 1930. It is one of 91 Model 370 roadsters built by Cadillac in 1931, and one of only eight known to have survived. It is the beneficiary of an 8,000-man-hour restoration completed in 2004.
The Cadillac Series 370 had many similarities to its V-16 counterpart but was outfitted with a twelve-cylinder engine. Most of the bodywork was constructed by Fisher with Fleetwood providing the interior coachwork.

During the close of the 1920's General Motors noticed luxury manufacturers such as Duesenberg and Auburn were rapidly becoming the prestigious nameplates for many families. To compete in this expanding marketplace, Cadillac bought Fleetwood, a custom body-building manufacturer. Fleetwood was tasked with building custom bodies using various designs and body styles to accommodate a wide customer base.

The twelve-cylinder engine had a reputation for its dependability, durability, and smooth and quiet ride. The 90-degree, L-head eight-cylinder engine with cast iron on an aluminum crankcase was capable of producing nearly 100 horsepower. The hydraulic shock absorbers and large, low-slung rear springs gave the occupants a level of comfort that was unmatched. The transmission was synchromesh with three gears and the large mechanical drum brakes provided excellent stopping power. There was plenty of optional equipment that could be purchased to suit the buyer's needs such as a trunk, tire covers, mirrors, heater, and more.

Unfortunately, the Great Depression was responsible for the low production numbers of Cadillac's most prestigious automobiles. Many manufacturers, especially those that catered to the wealthy clientele, were affected and many went out of business.

This example is of 74 1931 370-A, V-12 Fleetwood Roadsters built and one of seven known survivors. Bodied in the Fleetwood, Pa plant prior to GM moving the entire Fleetwood Body Works to Detroit. This car was delivered to Don Lee Cadillac, Inc. Dealership in San Francisco on 10/29/1930. This car has been given a restoration which took 8,000 man-hours to complete.

In 1931, a V-12 Roadster was used as the Indy Pace Car. The original price was $3,945.


First Place AACA National Winner- #W17611, CCCA Premier Winner- #2689SP

No auction information available for this vehicle at this time.

1931 Cadillac Series 370-A Twelve Auction Sales

Recent Sales of the Cadillac Series 370-A Twelve

(Data based on Model Year 1931 sales)
1931 Cadillac V-12 Fleetwood Convertible Coupe
Sold for USD$154,000
  2024 Broad Arrow Auctions : Amelia
1931 Cadillac Series 370-A Twelve image  1931 Cadillac Series 370-A Twelve image  
1931 Cadillac 370-A V-12 Roadster by Fleetwood
Chassis#: 10-894
Sold for USD$187,000
  2023 RM Sothebys : Hershey
1931 Cadillac Series 370-A Twelve image  1931 Cadillac Series 370-A Twelve image  
1931 Cadillac V-12 Dual Windshield Sport Phaeton
Sold for USD$162,400
  2023 Worldwide Auctioneers : The Auburn Auction
 
1931 Cadillac convertible coupé V12 370A par Fleetwood
Chassis#: 1005430
Sold for USD$129,090
  2023 Artcurial : Retromobile
 
1931 Cadillac Model 370A V-12 Sport Phaeton
Sold for USD$224,000
  2022 Broad Arrow Auctions : The Passion for the Drive
 
1931 Cadillac V-12 Convertible Coupe by Fleetwood
Sold for USD$198,000
  2022 RM Sothebys : The Hershey Auction
1931 Cadillac Series 370-A Twelve image  1931 Cadillac Series 370-A Twelve image  
1931 Cadillac V-12 Victoria Coupe
Chassis#: 1002367
Sold for USD$68,100
  2022 Worldwide Auctioneers : The Auburn Auction
 
1931 Cadillac 370A V-12 Fleetwood Sport Phaeton
Chassis#: 1003326
Sold for USD$418,000
  2022 Mecum : Monterey
 
1931 Cadillac 370A V-12 Roadster
Chassis#: 1004524
Sold for USD$257,600
  2021 Worldwide Auctioneers : The 14th Annual Auburn Auction
 
1931 Cadillac 370A V-12 Dual Cowl Sport Phaeton
Chassis#: 1001581
Sold for USD$346,000
  2021 Worldwide Auctioneers : The 14th Annual Auburn Auction
1931 Cadillac Series 370-A Twelve image  1931 Cadillac Series 370-A Twelve image  
1931 Cadillac V-12 370-A Convertible Coupe
Sold for USD$100,800
  2021 Gooding & Company : Pebble Beach Concours Auction
1931 Cadillac Series 370-A Twelve image  1931 Cadillac Series 370-A Twelve image  
1931 Cadillac V-12
Sold for USD$192,500
  2021 Mecum : Kissimmee
 
1931 CADILLAC V12 PHAETON
Chassis#: 1001774
Sold for USD$187,000
  2020 Barrett-Jackson : Scottsdale, AZ
1931 Cadillac Series 370-A Twelve image  1931 Cadillac Series 370-A Twelve image  
1931 Cadillac 370 Roadster
Sold for USD$88,000
  2019 Mecum : Chicago
 
1931 Cadillac V-12 Five-Passenger Sedan
Sold for USD$36,850
  2019 RM Auctions : Auburn Fall
 
1931 Cadillac V-12 Phaeton by Fleetwood
Sold for USD$192,500
  2019 RM Auctions : Auburn Fall
 
1931 Cadillac 370-A All Weather Phaeton
Chassis#: 1004488
Sold for USD$121,000
  2019 Mecum : Monterey
 
1931 Cadillac V-12 Five-Passenger Sedan
Sold for USD$36,850
  2019 Auburn Spring : RM Auctions
 
1931 Cadillac 370A 5-Passenger Sedan
Sold for USD$26,950
  2019 Mecum : Indianpolis
 
1931 Cadillac 370-A V12 Roadster
Sold for USD$133,547
  2019 H & H Classics - Imperial War Museum, Duxford
 

Cadillac Series 370-A Twelves That Failed To Sell At Auction

1931 Cadillac Series 370-A Twelve's that have appeared at auction but did not sell.
VehicleChassisEventHigh BidEst. LowEst. High
1931 Cadillac V12 Series 370A Five Passenger Phaeton 2024 Bonhams : Amelia Island Auction $90,000$120,000
1931 Cadillac V-12 Series 370A Seven Passenger Dual Windshield Touring Coachwork by Fleetwood 2024 Bonhams : The Scottsdale Auction $100,000$125,000
1931 Cadillac V-12 Roadster 2020 Mecum : Glendale$100,000  
1931 Cadillac V-12 Convertible Coupe by Fleetwood 2020 RM Sothebys : Scottsdale Arizona $225,000$275,000
1931 Cadillac 370-A V-12 Roadster10020702020 Worldwide Auctioneers : Scottsdale Arizona Auction   
1931 Cadillac V-12 Series 370A Roadster10033332019 Worldwide Auctioneers : Pacific Grove Auction   
1931 Cadillac V-12 Phaeton in the style of Fleetwood 2018 RM Sothebys : Fort Lauderdale $160,000$200,000
1931 Cadillac 370A Two Door Sport Coupe 2017 Russo & Steele : Newport Beach   
1931 Cadillac 370-A V12 Coupe10004512015 H & H Auctions Imperial War Museum   
1931 Cadillac V12 Seven-Passenger Phaeton 2014 WorldWide Auctions The Houston Classic Motorcar Auction $160,000$180,000
1931 Cadillac V-12 Rumble Seat Coupe 2013 CCCA Senior First Place10011412013 Mecum Auction Anaheim 2013$180,000  
1931 Cadillac V-12 Convertible Coupe 2013 Auctions America Auburn Fall$170,000  
1931 Cadillac V-12 Roadster Restored with Only 47,481 Original Miles 2012 Mecum Dallas, TX$145,000$150,000$200,000
1931 Cadillac 370-A V-12 Roadster10020702012 RM Auctions St. Johns, Michigan$160,000$190,000$225,000
1931 Cadillac Series 370A Fleetwood Roadster 2012 Leake Auctions Tulsa$18,000  
1931 Cadillac V-12 Roadster 2012 Branson Auction Spring 2012$197,100  
1931 Cadillac Model 370 V12 S1162-10-12011 RM Auctions Hershey$70,000$90,000$110,000
1931 CADILLAC 370A V12 ROADSTER10034732011 Worldwide Auctions The Auburn Auction $175,000$225,000
1931 Cadillac V-12 Five-Passenger Phaeton by Fleetwood10003782011 RM Auctions Concours d'Elegance at St. Johns$200,750$170,000$210,000
1931 CADILLAC FLEETWOOD ROADSTER 2011 Auctions America Spring Carlisle$95,000  
1931 Cadillac 12 Cyl Dual Cowl Phaeton 2009 Leake Auctions Dallas 37th Annual Leake Auto Auction Market Hall$102,000  
1931 Cadillac 12 Cyl Dual Cowl Phaeton 2009 Leake Auctions Dallas 37th Annual Leake Auto Auction Market Hall$95,000  
1931 Cadillac 370A Phaeton 2009 Mecum Monterey Auction$90,000  
1931 Cadillac V12 All-Weather Sport Phaeton10026542009 Bonhams Automobiles d'Exception à Retromobile $180,000$240,000
1931 Cadillac V12 Convertible Coupe1010392004 Vintage Motor Cars at Meadow Brook Hall$96,000$100,000$125,000
1931 CADILLAC FLEETWOOD CONVERTIBLE 2003 Kruse Auction Auburn, IN$72,000  
1931 CADILLAC FLEETWOOD ROADSTER 2003 Kruse Auction Auburn, IN$340,000  
1931 CADILLAC FLEETWOOD 370 A 4 DR PHAETON 2003 Kruse Auction Auburn, IN$100,000  
1931 CADILLAC SERIES 370 DUAL COWL PHAETON 2003 Kruse Auction Auburn, IN$67,000  
1931 Cadillac V-12 Coupe 2003 Michigan Spring Classic Car Auction$34,000  

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1931 Cadillac Series 370-A Twelve vehicle thumbnail image  1931 Cadillac Series 370-A Twelve vehicle thumbnail image  
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1931 Cadillac Series 370-A Twelve

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