Block saver thickness?

Scott's dart said
I bought an older lakewood 2 piece bellhousing for my big block and it didn't come with a block saver and I would like one because right now it looks like I'd have to lop off a lot of my input shaft because my crank isn't drilled for a 4 speed. Just wondering what's the normal thickness or if I can just get whatever thickness to suit my needs?

I will go out and measure mine for you, but off the top of my head, IIRC, it’s 3/16 (.187) thick. You can’t get too thick on the block plate because it will run into the flywheel. How much that is...I’d have to put mine back together and measure it, but I think a 1/4 inch would be the maximum.

Again, that’s off the top of my head.