Please note that a lot or most of the main parts for a MkIII are the same, common to, as the Earlier DB2 & DB2/4s - Look on those parts pages if you cant find the parts you require on the MkIII pages.
The Aston Martin DB MkIII's were built from March 1957 to July 1959, from Chassis No's AM300/3/1300 to AM300/3/1850, they were the last of DB2 variant's & the last of what are considered to be 'Feltham' cars as they were built there, although the bodies were made at Tickford's at Newport Pagnell which was to become the home of Aston Martin for the next 45 or so years, the Service Dept is still there (2012).
The car saw the 1st use of the famous Aston Martin grille shape since used on all subsequent Aston's, it also heralded the 1st use of the dashboard shape used up to & including the DB6 Mk2.
There were 3 body versions produced, a Saloon, a Drop Head Coupe & in 1959, a Fixed Head Coupe (5 of which), a total of 550 cars were manufactured.
4 engine options were offered, DBA - std twin SU carburettor engine giving 162bhp, DBD - triple SU carb engine giving 180bhp (all 5 FHCs came with this engine option & many DHCs), DBB - special triple Weber 35 DCO 3 carb engine giving 195bhp, DBC - very special competition engine with triple Weber 45DCO 3 carbs, race cams, pistons, etc. (1 of which made) giving 214 bhp.
A single pipe exhaust system was fitted as STD, with Twin exhaust pipes being an option, offering a supposed 16bhp increase.
Two gearbox options were supplied, a STD ratio & an optional Close Ratio gearset, and after Chassis No AM300/3/1401 an optional Laycock De Normanville overdrive was introduced, many cars were fitted with this (possibly 50% or slightly more), a few of these with Close Ratio gearsets.
Alfin Drum brakes were fitted all round to the 1st 100 cars with Girling front disc brakes an option, they became STD after AM300/3/1400, to fit the disc brakes a small change in spec of the wire wheels was required.
Although there were 4 options of diff ratio fitted to the 4HA Salisbury axle, mainly 2 were actually used, 3.77:1 to most of the cars, with 4.1:1 often being fitted to Overdrive cars as it offered a faster 0 to 60 time.
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