1965 Shelby 427 Cobra (CSX 3125), street-spec converted to SCCA A-Production race configuration
- Engine
- 427 cubic inch V8, side-oiler block, with aluminum cylinder heads
- Colour
- Blue with white stripes

CSX 3125 is the 25th coil-spring 427 Cobra built, originally a street-specification example delivered in September 1965 to a Texas dealership and quickly converted by its first owner to full SCCA A-Production racing trim using factory-sourced Shelby components. It compiled an impressive period competition record, including Northeast Division championships in 1968 and 1969 under John Paul Sr., before eventually passing to European ownership and later undergoing a comprehensive restoration returning it to its period blue-with-white-stripes racing livery and specification.
Ownership
- —Auction saleEstimate US$1,250,000 – US$1,500,000
- 1965 →Private saleRon Lambethpartial documentation
Dallas, Texas resident believed to be the original retail owner; shortly after purchase he converted the car to SCCA A-Production specification using components obtained directly from Shelby.
- 1965-09-17 →Factory deliveryGene Hamon Fordfull documentation
Receiving dealership in Texas City, Texas; car was invoiced to this dealer on the date noted.
- → 1970Acquisition unknownJohn Paul Sr.partial documentation
Burlington, Massachusetts racing driver who campaigned the car very successfully in SCCA competition; placed a for-sale advertisement after the 1969 season detailing the car's race record.
- 1970 → 1974Private saleSylvia Smithpartial documentation
South Burlington, Vermont owner who acquired the car through her driver Paul Chroinere, partly exchanging a road-spec 427 Cobra; she campaigned it through 1971 and offered it for sale in early 1972 but retained it until 1974.
- 1974 → 1980Private salePeter Sheridanpartial documentation
London, England owner who had the car shipped to the UK, registered it as RRB 500, and returned it to road use.
- 1980 → 1996Private saleRolf Saxerpartial documentation
Swiss owner who held the car for approximately sixteen years.
- 1996 → 2005Private saleBertold Theussenpartial documentation
Xanten, Germany owner who commissioned a thorough restoration beginning in 1997; paint removal confirmed original and race livery layers and verified the car retained its original chassis, body, drivetrain, and interior.
- 2005 →Private saleMr. Fonviellepartial documentation
Had the car sent to a respected Cobra specialist for a further restoration returning it to as-raced appearance with blue and white stripe livery; original components were preserved where possible.
Competition
- 1966SCCASCCA Regional Races 1966Driver: Ron Lambeth
Car raced in multiple regional events during this season after conversion to A-Production specification.
- 1967SCCASCCA Regional Races 1967Driver: Ron Lambeth
Continued regional competition during the 1967 season, leading to qualification for the national championship.
- 1967SCCA1967 American Road Race of ChampionsDriver: Ron Lambeth
Held at Daytona; car qualified for this national championship event.
- 1968SCCASCCA Northeast Division Championship 1968Driver: John Paul Sr.1st, Northeast Division
Per the owner's own advertisement, the car also won the Area 1 title this year.
- 1969SCCASCCA Northeast Division Championship 1969Driver: John Paul Sr.1st, Northeast Division
Combined record for the two seasons under this driver was eleven wins and two second-place finishes from fifteen starts.
- 1971SCCA1971 American Road Race of Champions8th in class, 14th overall
Held at Road Atlanta; car ran a freshly built engine and was the top-finishing A-Production Cobra in the field. Period photographs of this event are included in the car's documentation.
Maintenance & restoration
- 1965Modification
Street-specification car converted to SCCA A-Production racing trim by its first owner: wheels widened, larger brakes fitted, competition windscreen, roll bar, side pipes, 36-gallon fuel tank, and aluminum cylinder heads added, all sourced directly from Shelby.
Components were ordered through Lew Spencer at Shelby American; Spencer's direct contact number was recorded in the owner's manual.
- 1970Mechanical
Drivetrain and chassis refreshed and the exterior repainted prior to sale.
Work carried out while the car was unsold following John Paul Sr.'s 1969 advertisement.
- 1974Service
Car recommissioned for road use following export to the UK, and registered for street use.
- 1997Restoration
Full restoration commissioned by the German owner; paint stripped to reveal original white base coat beneath the blue-with-white-stripe racing livery. Confirmed that original chassis, body, engine, transmission, and interior were all present and intact.
Work began in 1997 following purchase in 1996.
- 2005RestorationCobra specialist (unnamed)
Comprehensive restoration to as-raced specification carried out by a respected Cobra specialist. Car returned to blue-with-white-stripes livery; original seats and interior retained. Engine block replaced with a correct side-oiler unit as the original was beyond economical repair; new aluminum cylinder heads fitted to preserve the originals as spares.
As many original components as possible were retained; replaced parts were kept with the car. A substantial collection of original parts accompanies the vehicle.
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