It won't matter now but I do need to know if the length of the big block Z bar is the same as the small block one I'm currently using.
I sat an old blow-proof bell housing in and used the pivot that was on the 318 poly bell housing.
Everything is level and the clutch rod when going thru its travel doesn't touch or rub anywhere. It seems centered in the hole vertically.
Ultimately this is what I'll use to locate the engine and transmission mounts since I have to fab everything anyway.
Just one more small piece that's 1/2 done...
I added an extra brace back to the firewall to make sure there is no movement left to right at the pivot.
I really wanted to get started tying in the 2 support bars on the front frame but I haven't been able to locate a set of fender well headers for a big block.