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By 1965, Shelby needed more speed from his Ford 289-powered small block Cobra. Constructor and driver Ken Miles recommended switching to the 510 horsepower, 427 cubic-inch 'sild-oiler' V-8 big-block. Along with the larger engine, the Cobra received a much bigger tube frame that was five inches wider, coil spring suspension and flared fenders to accommodate wider wheels. The 427 Cobras used the Ford top-loader 4-speed transmission and had independent rear suspension with a Salisbury-type 4HU center housing, like that used on Jaguars. Unlike the Jaguar E-Type, the Cobra's disc brakes were mounted on the ends of the axles rather than inboard. Due to supply issues, the last 100 or so Cobras received a 428 engine instead of the legendary 427. The 427 side oiler Cobras, like this example, are more desirable. Shelby built 998 Cobras from 1961 until 1968.
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1966 Shelby Cobra 427 Auction Sales
Recent Sales of the Shelby Cobra 427
(Data based on Model Year 1966 sales)
| 1966 Shelby 427 Cobra Roadster Sold for USD$2,145,000 2024 Mecum : Indy | |
| 1966 Shelby 427 Cobra Roadster Sold for USD$1,430,000 2023 Mecum : Kissimmee | |
| 1966 SHELBY 427 COBRA Chassis#: CSX 3192 Sold for USD$1,050,000 2022 Gooding & Company : Amelia Island Auction |  |
| 1966 Shelby Cobra 427 Chassis#: CSX3205 Sold for USD$995,000 2021 Bonhams : Quail Lodge |  |
| 1966 Shelby 427 Cobra Chassis#: CSX 3242 Sold for USD$1,050,000 2021 Bonhams : Quail Lodge |   |
| 1966 Shelby 427 Cobra Roadster Chassis#: CSX3173 Sold for USD$2,420,000 2019 Mecum : Indianpolis | |
| 1966 Shelby 427 Cobra Chassis#: CSX 3359 Sold for USD$1,792,500 2019 RM Sothebys : Amelia Island |   |
| 1966 Shelby 427 Cobra Chassis#: CSX 3284 Sold for USD$882,586 2019 RM Sothebys : Paris | |
| 1966 Shelby 427 Cobra Chassis#: CSX 3102 Sold for USD$995,000 2018 RM Sothebys : Monterey |   |
| 1966 Shelby 427 Cobra Chassis#: CSX 3283 Sold for USD$1,457,500 2018 Gooding & Co. : Amelia Island |  |
| 1966 Shelby 427 Cobra 'Semi-Competition' Chassis#: CSX 3040 Sold for USD$2,947,500 2018 RM Sothebys : Scottsdale, Az. |   |
| 1966 Shelby 427 Cobra Chassis#: CSX 3293 Sold for USD$1,100,000 2017 RM Sotheby's : Arizona Auction |  |
| 1966 Shelby 427 Cobra Chassis#: CSX 3259 Sold for USD$1,210,000 2015 RM Sotheby's : Monterey |   |
| 1966 SHELBY COBRA 427 'SUPER SNAKE' Chassis#: CSX3015 Sold for USD$5,115,000 2015 Barrett-Jackson - Scottsdale |   |
| 1966 Shelby 427 Cobra Chassis#: CSX 3102 Sold for USD$990,000 2015 RM Auctions - Automobiles of Arizona | |
| 1966 SHELBY 427 COBRA ROADSTER Chassis#: CSX3172 Sold for USD$1,000,000 2014 Mecum - Monterey | |
| 1966 Shelby 427 Cobra Chassis#: CSX 3359 Sold for USD$1,705,000 2014 RM Auctions at Monterey | |
| 1966 Shelby 427 Cobra Sold for USD$962,500 2014 Auctions America : California | |
| 1966 Shelby Cobra Roadster Sold for USD$28,000 2014 Leake Auction : Dallas Spring | |
| 1966 Shelby Cobra Sold for USD$36,000 2014 Leake Auction : Dallas Spring |
Shelby Cobra 427s That Failed To Sell At Auction
1966 Shelby Cobra 427's that have appeared at auction but did not sell.
| Vehicle | Chassis | Event | High Bid | Est. Low | Est. High |
|---|---|---|---|---|---|
| 1966 Shelby 427 Cobra | csx3220 | 2024 Mecum : Indy | $1,100,000 | $1,500,000 | $1,750,000 |
| 1966 Shelby 427 S/C Cobra | CSX 3040 | 2024 Broad Arrow Auctions : Amelia | $3,000,000 | $3,750,000 | |
| 1966 Shelby 427 Cobra | CSX 3237 | 2024 RM Sothebys : Arizona | $1,100,000 | $1,300,000 | |
| 1966 Shelby 427 Cobra Roadster | csx3283 | 2024 Mecum : Kissimmee | $1,300,000 | $1,600,000 | $1,800,000 |
| 1966 Shelby 427 Cobra | CSX 3259 | 2023 RM Sothebys : Monterey | $1,200,000 | $1,400,000 | |
| 1966 Shelby 427 Cobra Roadster | CSX3162 | 2020 Mecum Auctions : Kissimmee | $1,500,000 | $1,500,000 | $1,900,000 |
| 1966 Shelby 427 Cobra | CSX 3237 | 2019 RM Sothebys : Monterey | $1,100,000 | $1,250,000 | |
| 1966 Shelby 427 Cobra | CSX3107 | 2019 Gooding & Company : Scottsdale Arizona | $1,100,000 | $1,400,000 | |
| 1966 SHELBY COBRA ROADSTER | 6F08C259774 | 2018 Premier Auction Group | $40,000 | ||
| 1966 SHELBY COBRA CSX3239 ROADSTER | CSX3239 | 2018 BarrettJackson : Scottsdale | |||
| 1966 Shelby 427 Cobra | CSX 3359 | 2017 Bonhams : Quail Lodge | $1,600,000 | $2,000,000 | |
| 1966 Shelby 427 Cobra | CSX3165 | 2016 Gooding & Company : Pebble Beach | $1,200,000 | $1,600,000 | |
| 1966 SHELBY 427 COBRA | 2014 Mecum Dallas | $300,000 | |||
| 1966 Shelby 427 Cobra | 2013 Worldwide The Houston Classic | ||||
| 1966 AC Shelby Cobra 427 MkIII | CSX3259 | 2010 Bonhams Quail Lodge | $650,000 | $750,000 | |
| 1966 Shelby Cobra 427 Roadster | CSX3209 | 2010 Mecum Auctions Monterey | $850,000 | ||
| 1966 Shelby Cobra 427 Roadster | CSX3301 | 2009 Mecum Original Spring Classic Auction 22nd Year | $600,000 | ||
| 1966 Shelby Cobra 427 | 2009 The Scottsdale Auction : Gooding & Company | $750,000 | $850,000 | ||
| 1966 Shelby Cobra 427 | CSX3301 | 2008 Sports & Classics of Monterey by RM Auctions | $775,000 | $800,000 | $900,000 |
| 1966 Shelby Cobra | 2008 Dana Mecum's Original Spring Classic Auction | $80,000 | |||
| 1966 Ford Cobra 427 | 2008 RM Auctions Classic Car Auction of Toronto Spring | $17,250 | |||
| 1966 Shelby Cobra 427 | 2007 Gooding & Company | $800,000 | $900,000 | ||
| 1966 SHELBY COBRA REPLICA | 2007 Palm Springs Exotic Car Auctions February 2325, 2007 | ||||
| 1966 Shelby 427 Competition Cobra | 2002 Monterey Sports and Classic Car Auction | $530,000 |
Vehicles With Comparable Market Values
Similar sales to the $980,177 range.
| 1973 Porsche 911 Carrera RS 2.7 Touring Chassis#:9113601235 Sold for $989,500 2023 RM Sothebys : The White Collection | |
| 1961 JAGUAR E-TYPE SERIES I 3.8-LITRE ROADSTER Chassis#:850004 Sold for $983,049 2023 Gooding & Company : London Auction | |
| 2005 Ferrari Superamerica Chassis#:ZFFGT61A650144855 Sold for $978,500 2023 RM Sothebys : Monterey |   |
| 1932 Aston Martin Le Mans 'LM8' Chassis#:LM8 Sold for $972,783 2023 RM Sothebys : Le Mans | |
| 1956 MERCEDES-BENZ 300 SL GULLWING Chassis#:198.040.6500278 Sold for $970,631 2022 Gooding & Company : London Auction | |
| 1926 Bugatti 37A ex-Jacques Dufilho Chassis#:37211 Sold for $987,388 2022 Artcurial : Retromobile | |
| 1973 PORSCHE 911 CARRERA RS 2.7 LIGHTWEIGHT Chassis#:9113600196 Sold for $973,000 2022 Gooding & Company : Amelia Island Auction |   |
| 1986 Lancia Delta S4 Chassis#:227 Sold for $975,525 2021 Artcurial : PARISIENNE 2021 | |
| 1965 Aston Martin DB5 Vantage Chassis#:DB5/1767/L Sold for $975,525 2021 Artcurial : PARISIENNE 2021 | |
| 2018 Ford GT Chassis#:2FAGP9CW9JH100096 Sold for $971,299 2020 RM Sothebys : London Online | |
| 1957 Mercedes-Benz 300 SL Roadster Chassis#:198 042 7500518 Sold for $986,346 2020 Artcurial Motorcars : Monaco | |
| 2019 McLaren Senna Chassis#:SBM15ACA1KW800247 Sold for $978,500 2020 Gooding & Company : Amelia Island | |
| 1967 Serenissima 3000SP Prototipo Chassis#:MK 168-001 Sold for $985,402 2020 Artcurial : Retromobile | |
| 1957 Mercedes-Benz 300 SL Roadster Chassis#:198.042.7500555 Sold for $973,000 2020 RM Sothebys : Scottsdale Arizona | |
| 1985 Lancia Delta S4 Rally Chassis#:ZLA038AR000000202 Sold for $979,319 2019 RM Sothebys : London | |
| 2017 Ferrari F12tdf Chassis#:ZFF81BFA3H0223691 Sold for $975,000 2019 RM Sothebys : Fort Lauderdale | |
| 1936 Bugatti 57 Atlantic modifiée Erik Koux Chassis#:57654 Sold for $970,559 2019 Artcurial : Retroobile | |
| 1957 Mercedes-Benz 300SL Roadster Chassis#:198042-7500328 Sold for $984,672 2018 Bonhams : Goodwood Revival | |
| 1976 Lamborghini Countach LP400 Periscopica Chassis#:1120182 Sold for $979,000 2018 Gooding & Company : Pebble Beach | |
| 1968 Lamborghini Miura P400 Chassis#:3649 Sold for $980,764 2018 Artcurial : LeMans Classic |
1966 Shelby Cobra 427
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