4.0 or 40HC

[ssc1]

how can i tell by just looking at the engine if the car is a 4.0 or a 4.0HC , just been looking at a very fine example but told myself that if i go for a 4.0 then it must be a HC model , and the seller did not know ,the engine just has 400 on the top, yes i know they are all fast but the HC will get up there quicker yes......

[ssc1]

thanks for all the replies , the reason for going for a HC would have been the rarity bit . as i know only too well that TVR power is not the same from car to car and that quoted power is not allways the same as actual power. at the end of the day the car was bloody good .......