Looks like the SC block has a bit more meat for 4 bolt mains.
I was hoping it had even more ? but maybe my 89 block
is different? What year is that SC block?
PS: last SC pic did not load...
I think both the ones I had were D8 castings. The first one was
A Duracast Crank but this one is FORGED
Hopefully the first years had good blocks...