Quote:

Quote:


You need to re-visualize this.

early BB has a longer crank than a later one.

A spacer for the later crank would fix that.

Nothing special about it, though I dunno if anyone makes them, but building one should be easy for a machine shop or someone with the machine tools. Not sure if the early cranks use nuts and bolts



That's the rub, the early converter has 8 studs with nuts on the front side of the crank flange.


as I understand it, the crank flange pattern is the same as the 8 bolt later hemi. the hole size is 7/16", which is close to the tap drill size required for a 1/2-20 thread which is 29/64" [.453]. so a quick ream and tap would make the early crank flange useable for a modern flexplate. am I thinking right ?