273 or NOT 273?
#920's.
Very similar to the #302's except no eyebrow between the valves. The top photo is with a original 273 steel shim head gasket. It looks like quite a bit of room for larger valves.
#920's.
Very similar to the #302's except no eyebrow between the valves. The top photo is with a original 273 steel shim head gasket. It looks like quite a bit of room for larger valves.