Is there a simple/easy way to ID a 273 engine vs 318?

For starters look to see if it has a driver's side exit Cast Iron (thinner) Water pump. Common with the 273, and 68 - 69 318s.
If it has an aluminum water pump then you know it is a later 318.

Timing marks on the passenger side instead of the drivers side like the later 318s.

Just for starters.

Then there is the block casting over the starter on the Drivers side if you can get to it, will show 273 or 318.

Have fun.....


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