273 commando heads vs. standard
The replacement seats are 1.563 OD but your cutting iron to sink these in. My 64 valves were spot on: 1.78 and 1.50 at the valve edge so the ID of the seats is smaller. still dont know where that 1.563 valve comes from but its very coincidental that the seat OD is that size. More BS? (Ha ha, good 'ol Rockauto for a reference? :eek: )
The replacement seats are 1.563 OD but your cutting iron to sink these in. My 64 valves were spot on: 1.78 and 1.50 at the valve edge so the ID of the seats is smaller. still dont know where that 1.563 valve comes from but its very coincidental that the seat OD is that size. More BS? (Ha ha, good 'ol Rockauto for a reference? :eek: )
