Quote Originally Posted by HK1837 View Post

It also says the 2.7":1 was not available with XT4 (ADR27A) so I deduce from that 2.78 phased out near the end of HJ with 2.6 becoming standard on HJ Statesman a little earlier in 1976.
and this is where the books are wrong from hands on experience byron...i have never wrecked any hj hx hz statemans that have had a 2.60 diff...always 2.78 or 3.08 and as you know i have wrecked a hell of a lot just in the last 20 years..
there is no way that so many original statesmans would have had the diffs changed from 2.6 to 2.78..
i have wrecked a couple of wb statesamns with 3.08 but never any with 2.78..always 2.60.