Quote Originally Posted by SLR_dave View Post
I thought Holden did make some 308s in the Chevy pattern to fit the Powerglides early on,
Sorry, I should have written Powerglide instead of Tri-Matic in my earlier post. The real early Holden Powerglides were three piece with a removable bellhousing.
Of course the same is true of the Tri-Matic. Turbo/Chev patten Holden 308 blocks didn't happen in HK-T-G.

Your engine number should give up what model your block is from.