[Keith True]

And the engines with both valves in the head were designated I head engines.You really don't hear those designations much anymore.I should've recognized that head as a Jeep right off,I had enough of them apart in the 70's.They weren't problematic,but they were used as plow rigs and would get used all winter and parked all summer.The pans,valve covers,and timing covers would rot and leak.I served a lot of time sitting behind one of those engines plowing driveways in a trailer park.I can't quite remember what that engine was called.IH's little motor was a Comanche,the Jeep six was a Hurricane,but the name of that little F head 4 escapes me.