MarkyB wrote:I have the feeling that you are fighting the laws of physics to an extent, and the law of diminishing returns.
Even if you can get more power out of the engine it will be used up trying to push an essentially flat surface though the air.
I think you will actually be getting a low pressure area at the back which will help to hold it back too.
Quite a lot more power is unlikely to achieve much more speed.
How fast does it go on a steep downhill gradient?
Dont rearly know havent managed to get up one
To be honest I have only run the van up and down the road outside work. its a nice straight with a roundabout about 2 miles apart, There are a lot of old vans in the past transit's 'etc. Much bigger and squarer and heavier. I have also seen high top moggy vans (Google Images). Id love to find out what the moggy camper (the one like the corgy toy) went like. Would anyone on here know ?