8 3/4 Vent Blow-By

No I think this had to do with the cone types not needing the SG additive.

Op said he added SG additive... Wonder what Sure-Grip he is running? I will have to go back and see if he said.

Yes he said cone-type. Could the additive be the problem? I read all over the place that everyone says to use the SG additive but I wonder if it could be foaming when used with this housing?

Ok, I guess I wasted my time. There are a total of 6 pages on this TSB, 3 on another TSB and a reminder for a total of 10 pages in 1969 just fror the 8 3/4. Maybe some guru might read them and see if there is any answers.

I am interested in an accurate answer on this one.