diffs gearboxs and tyres HELP!!!

[BusyKiwi]

early commodores and falcons

ford usually 2:... and 4:... while holden around the 3:...   

[vuuup]

2:... 4:... 3:... ? is this got to do with ratios?

[Bas / NZ]

2= ratio 2.7 etc 4= 4.1 etc 3=3.5 etc... these will only fit the 9" diff...

[vuuup]

oh ok,cheers. would the 9" be what i have?

i dont really know what i am looking for so will talk with my drive line guy on monday and give him this info. 

[Bas / NZ]

Dual wheel, no you have a 10", 9" were on the SWB Mk 1 models, square shape backing plate, 10" round  on Jumbo's single and Dual and Mk2 Bedford Vans (well standard, anyway)

[vuuup]

oh well looks like broaching or key cutting (whatever its called) the gears for lsd is my best option? anyone know much that costs?

looks like this diffs going to make me bankrupt (still paying my debts off from the van rebuild) as also need bearings and seals and possibly a pinon and crown

[Bas / NZ]

If you want to keep the drual wheels, you have one other option to fit a 9" form the Ford Galaxie family, but post 1970 models as they had the bigger spline axles in them as per your 10" shaft on the Bedford, per 1970 they had the step down spline as per the 9" Bedford. I have seen this down in NZ and was told by the guy who did it it is a straight swap with the Dual axles only, but please check this out as it was a long time ago and can't remember all the details...

Does anyone know the spline count on the 9" and 10" axles, have both here but hard to get to at the moment...

[vuuup]

will check it out

this may help with axle spline count
http://www.buga.com.au/index.php?option=com_smf&Itemid=2&topic=1966.msg19587#msg19587

[vuuup]

can only find ford galaxy 28 or 31 spline 

[Bas / NZ]

Yes this is correct, but know it was done, with out any machine work, may be the center was bolted into the dual wheel diff then bedford dual axles used, the diff width was the same. But all in all something is not right, because on the link they say that no axles fit the Holden centre but they use the Holden centre here with the Bedford axles, so what ever is changed to accommodate this may be what is used on the Galaxy swap... but stand by the fact is is inter-changeable..