1961 Aston Martin DB4 Competition Saloon
- Engine
- Enlarged 4.5L inline-six with RSW cams, Cosworth pistons, Carrillo con-rods, triple twin-choke Weber 55 carburettors, ~416 bhp
Chassis DB4/725/R is a 1961 Aston Martin DB4 prepared as a full competition saloon by marque specialist R S Williams in 2003, featuring a 4.5-litre inline-six producing approximately 416 bhp. Built to AMOC regulations, it incorporates bespoke camshafts, Cosworth pistons, Carrillo connecting rods, triple Weber carburettors, a Hewland limited-slip differential, and an internal roll cage. The car competed with notable success in North American historic events between 2004 and 2007 before entering static storage around 2010.
Ownership
- 2022-04-10Auction saleSold £205,000 (≈ $256K)
- 2003 →Acquisition unknownR S Williamspartial documentation
Richard Williams built the car from scratch as a competition vehicle for the AMOC racing series; his firm completed it in 2003.
- → 2010Acquisition unknownPeter Readpartial documentation
Based in Berkeley, California; described as a prominent Aston Martin collector who sold the car at a US auction.
- 2010 →AuctionCurrent vendorpartial documentation
Acquired at a US auction; car was noted to be in excellent cosmetic condition at that time and has since been kept on static display without use.
Competition
- 20042004 Monterey Historics
Part of the car's North American historic racing campaign following completion by R S Williams.
- 20052005 Monterey Historics
- —HMSAHMSA series roundsClass dominant
Competed across multiple rounds of the HMSA series between 2004 and 2007, reportedly dominating its class.
- —CSRGCSRG series roundsClass dominant
Competed across multiple rounds of the CSRG series between 2004 and 2007, reportedly dominating its class.
Maintenance & restoration
- 2003RestorationR S Williams
Complete build to full competition specification by R S Williams, including engine enlargement to 4.5 litres, bespoke camshafts, Cosworth pistons, Carrillo connecting rods, triple twin-choke Weber carburettors, triple-plate clutch, modified gearbox, reinforced rear axle with doubled wheel bearings and Hewland limited-slip differential, upgraded brakes, revised front suspension geometry with uprated springs and dampers, oil cooler, aluminium radiator, fuel cell, internal roll cage, and fire suppression system.
Build was intended specifically for AMOC-series competition and constructed within the regulations then applicable.
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