head gasket thickness??

I do the same. Just curious what are you building with your 85? I have a 86 318 I'm building.
85 318 with 302 heads bunch other craigs list junk gonna throw together and stick it in an 73 duster as light as i can get it and see what it runs, no budget, few brains, even less manners, no street,digger only with only safety and speed in mind, just something to do...