Vic’s vehicle may have had the wrong axle ratio. It seems to be geared about 10 mph / 1000 rpm, unless someone had screwed down the maximum speed screw on the pump.
The 4.99, 4.107 and 4.108s were all capable of a 4,000 rpm rated speed, with up 4,400 rpm max no load speed.
The Transits that i used as Technical Assistant were capable of 60, although that was an illegal speed for a van. The early ones with worm and wheel steering boxes could be interesting if wear developed and not taken out!
Maybe why Vic’s had been despeeded
They were very popular among taxi drivers, who wouldn’t want a slow vehicle.
Howard