Title says it all. Will the cylinder head casting from a 92 CB 1 fit a 96 CB400 super four?

I'm not 100% sure, but I'd guess at no. The CB-1 motor has gear-driven cams and I think is more similar to CBR lumps of the era than to the CB400s.

don't take my answer as definitive though

Barny

The CB-1 has gear-driven cams and the pre-VTEC Super Four has a cam chain, so no it won't fit, but interestingly, according to the parts lists the head gaskets are exactly the same...

Ciao,