EYY
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one tonners had the larger yoke. AFAIK, all other v8 unis are the same for the old holdens. If it did have a 6 cylinder diff and tailshaft in it, it was probably because somebody broke the original one and replaced it with a 6 cylinder one that they had access to.All due respect, the 2.78 geared disc braker I have came from a VH SLE, fitted with a factory 308 and it has a small yoke on the diff (ie 6cyl unis)...The 3.08 disc braker came out of a 253 powered VB and it is fitted with the larger unis (ieV8)
You can't switch diff yokes between the 2 different diffs....the spline on the diff yoke is different between the 2...the tailshaft needs to have the universal section replaced.
Make sure you don't get a 2.78 diff with the intention of changing the diff gears to a shorter ratio - apparently the centres are different. 3.08 - 4.44 are the same though if you're looking to mess around with the gears. The real 10 bold salisburys are more oval shaped, a bit like an egg. The smaller ones are the 8 bolt type which i think ari may be talking about which have a more circle looking back cover.
Alot of people think that '10 bolt' refers to the number of bolts holding the cover on, but it's actually referring to the number of bolts for the crown wheel