Quote Originally Posted by HK1837 View Post

10/74 (HJ) to 11/81 Holden, Commodore and Statesman auto 308 had the rear of the block drilled differently to suit the TH400 and (from 5/79) TH350.

VN-VSIII 304/350 are all TH pattern to suit TH700R4 (VN/VG), 4L60 (VP), 4L60E (VR on), T5, Getrag or whatever the HSV 6spd was called (plus Statesman derivatives).
So from this can I assume these 2 things.
1- An 11QT block from 10/74 to 11/81 will be turbo pattern (statesman 308 and all statesman's are auto?)

2- A T5 with it's correct bellhousing will bolt up to any of the earlier turbo blocks.