In January 1960, Aston Martin addressed overheating issues with a larger oil sump and optional front oil cooler. The Aston Martin Owner’s Club (AMOC) later determined this was sufficient to consider the larger-sump cars to be considered Series II
While Aston enlarged the sump, they also fitted larger front disc brakes and changed the hood to hinge from the front.
DB4 Series II production lasted from January 1960 to April 1961. This includes chassis DB4/251/L to DB4/600/R which should be around 350 cars.
Series Production Car
1960 – 1961
3670 cc / 224.0 in³
91.95 mm / 3.62 in
91.9 mm / 3.62 in
179.0 kw / 240 bhp @ 5500 rpm
65.4 bhp per litre
183.49 bhp per tonne
332.2 nm / 245.0 ft lbs @ 4000 rpm
body / frame
Aluminum Panels over Box-Section Steel & Tubular Steel Chassis