Early 544/Amazon back axle

[Derek UK]

ENV the diff comes out forward as a unit with the housing. Rear cover is fixed. Spicer the diff gears come out the back. It has a removable cover. Although the 4.10 and 4.56 ratios may be the same the parts aren't interchangeable. The Amazon Estate has a similar problem but that Spicer axle only has a 4.56 ratio available for it. Saloons use ENV.
Discussions about diff swapping have been going on forever with Jeeps usually mentioned. I have yet to see any positive results. As said the way the PV mounts the axle makes things even more difficult. In the past there were bracket kits to allow a 4.10 saloon axle to fit an Estate. I've seen pics of the brackets but none of a completed conversion.

[Salop Farmer]

Sorry to confuse you 142 Guy My PV has a ENV with 4.56 diff. I also have a Amazon Spicer/Dana axle in my shed which,I presume, came off an overdrive/estate car as it also is 4.56 ratio. So I have put an enquiry out for a 4.1:1 axle for a 544 but don’t hold out much hope. If I simply can’t live with my car as is, then, I may experiment with the larger tyre option. But this would involve modifying the front wings to prevent contact on lock. Something I’m not keen on doing!

[Salop Farmer]

So Derek UK are you saying the two ratios of crown wheel and pinion ( 4.1 and 4.56) fitted in ENV axles are not interchangeable? Or did you mean not interchangeable between the two makes ( ENV and Spicer/Dana)

[Derek UK]

I can't answer you with regard to the PV axle. I would think that there is a good chance the the PV 4.10 and 4.56 crown wheels will interchange. If you can find a pair of 4.10 ones they may have to come from Sweden. Try KG Trimning perhaps. Give John Crosskey a call johnsignwriter@aol.com mob.07957 110 158 he might be able to help. Check him in the Parts for sale here a few ads ago.
It looks as if ClassicSwede, Dai here on the forum has conversion brackets for the Amazon axles. They are about £200 or so. That doesn't help you much.