v8s plenum chamber differences

[mannik]

have seen some V8S's that have 3.9 on the plenum chamber and others with 400
what is the difference?

[GreenV8S]

The last few V8S were fitted with Chimaera spec catted engines, perhaps that accounts for it.

[mannik]

...if you look at the ash green V8S that is sold on PH it is a 1992 precat..in fact most V8S's I have seen have 400 so I not sure that this is the reason...

Would like to know if it is the same engine just a different plenum chamber or whether there are other differences

[GreenV8S]

The only variations in the engine that I'm aware of are cat / precat. The plenum top and badges are common to all the RV8 powered TVRs and it may be they just used a different badge when it was available.

[Barkychoc]

If it says 3.9 its a Range Rover plenum.
If its blank with a window for a badge that says 400 etc then its a TVR one.
As far as I'm aware there is no other difference other than the badge.