Thanks for the info and the link...I'll continue on the old thread.  

Here’s the link to the previous discussion.
http://forums.y-blocksforever.com/Topic163602.aspx

Lorena, Texas (South of Waco)

4.680”  diameter.

I can’t tell you the hole diameter, but just search eBay for y block bellhousings. The truck version has a large hole and the mounting ears on either side. The car is a pretty standard looking bellhousing. The truck bell is deeper too I think.

In at least some cases later model transmissions can have the front bearing retainer turns down (about 1/4” if memory serves) to fit the y bell, and a couple holes redrilled.

I don’t recall your earlier post about what you’ve got going on.

miker
55 bird, 32 cabrio F code
Kent, WA
Tucson, AZ

Anyone know the diameter measurement of the hole that the transmission bearing retainer slides into on the Y block bellhousing?  I know I asked before but I am not sure how to search.
I am pretty sure I have a car bellhousing, but if anyone has the measurement for the car and the truck, it might be helpful.

Thanks.