Här är en rapp V8 TVR Cerbera lätt o varvvillig
AJP 4,2ltr 360BHP 129kg eller 4,5ltr 420BHP med "lilla motorn gjorde TVR Cerbera 297km/h även 440BHP fanns
The AJP8 has one of the highest specific outputs of any naturally aspirated V8 in the automotive world at 83.3 hp/litre for the 4.2 and 93.3 hp/litre for the 4.5. Later models of the 4.5 litre engine were given the option of being to the 'Red Rose' specification, which increased its output to 440 bhp (97.7 hp/litre) when fuelled with super-unleaded (high octane) and the driver pushed the unmarked button on the dashboard which altered the engine mapping to suit.
http://en.wikipedia.org/wiki/TVR_Cerbera