Excellent question - I do not know as he has no tach (!). Stock tranny as
far as I know, so it is probably winding her right up there. This is not
something that he does regularly. The Bus is currently off the road awaiting
restoration, so  I have no means of checking.

 Nice installation of the 6 - will it fit and are there kits for the Vanagon
I wonder?

> How many RPMs is he pulling when he goes 100MPH?
>
> When I do 75MPH in any of my Vanagons, the engine is turning over 4000RPMs.
> Without a 5 speed, or a completely different tranny, wouldn't your top speed
> be limited by the number of RPMs the engine can turn?