small block heads

Yes bore is 3.91
I wasnt arguing I dont really dont know either that why I posted the pics so if someone on here know they could educate me on it , sorry if i came of like i was argueing cause that was not my intent so please forgive me if it did
It's all good brother I was just clarifying that noone was disputing you. Sometimes its hard to interpret ppls responses thru text lol no apologies needed.