The other question is regarding the hole mod for the timing plate:
The drawing suggest 1/2" hole - the bolts I understand are 7/16" carriage - so I presume the 1/2" holes reflect clearance for the square 'carriage' section
So ideally I should really drill 7/16" holes and file square if I want the anti-rotation capability of the carriage - yes?
It must be hard otherwise if you use a carriage bolt - or do you use a regular hex bolt and get a wrench on it BEFORE installing the Balancer (in which case, why not still 7/16" hole?)
My ‘59 235 was already installed when I bought my ‘52. When I rebuilt the engine, I found my plate was drilled round. “Pre ‘68 Dave”, on his website shows the plate having square holes. Maybe he could elaborate if he sees this post. Here is a link.
http://chev235guy.blogspot.com/search/label/Timing%20Plate%20Drill%20Template
