Allowing for the variables is 4th gear on the V8S as near as dam it 1:1. If not what is the nearest to 1:1 in terms of RPM & road speed? Thanks in advance.
Selecting 4th locks the input and output shafts together in the gearbox, it's direct rather than going through any gears so is 1:1. You've still got a 3.64:1 (I think) in the diff though.
If not what is the nearest to 1:1 in terms of RPM & road speed?
Not sure what you mean there - there will never be a 1:1 relationship between RPM and road speed. 4th gear is 1:1 so engine speed and prop shaft speed are the same if that's what you mean.