question about heads...
Also, they have press on studs. Could that be an indication of their size? I had a 305 that was like that so Im hoping thay also made some for 350's like that.

BTW the # on the block is 3956618, but ive found the specs on that one already. thanks for any help.
Most non performance sbc heads come with pressed in studs.
If you wire brushed both numbers and still can't read them you can somewhat ID them by the shape on the front and rear between the valve cover and block.
As for the heads you really need pics but typically a 302 or 327 originally came with double hump heads like these. There are several other shapes also but this is all I can find online.
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