308 head Q

308 heads were a bandaid head.They were the predecesor to the magnum and improved on the achilles heal of the sbm head,which is the dogleg exhaust ports in the middle.
However they still used the old rocker shaft layout,small 1.88 1.60 360 valves and the open chamber design.

They can be made to breath better than an x head.But the price being asked for shipping here is retarded.