318 timing mark
Not sure thinking mid 70's
Yes and no...
You can bolt the 273 timing chain on the 318, but then you will also need to use the cast iron water pump and proper pulleys for it, or else the aluminum pump radiator hose outlet will block the timing marks.
The 273 was made from 64-69.
In 70 they changed the timing marks from the pass side to the driver's side and had to move the lower radiator hose outlet on the water pump to the opposite side also, so it wouldn't block the timing marks. You have to use the 69 and earlier timing chain with the cast iron water pump, or the later timing chain and aluminum water pump.
Then you have to worry about what side the radiator outlet is on...
The timing marks on the damper also changed to match the timing cover...
What specifically are you trying to do??? What year engines and timing chain covers/balancers are we talking about???
