Whats the easiest way to tell the difference between the different mopar v8's (60'S and 70's)?

prefferably without pulling apart the engineWhats the easiest way to tell the difference between the different mopar v8's (60'S and 70's)?
Your best source of info would be http://www.allpar.com/ and click engines.



Chrysler re-engineered most of their engines in the late '60's and carried these changes into the early '70's when emission laws and insurance companies pretty much killed the big block high horsepower engines. The 383 became the 400, the 340 was dropped at the end of the '73 model year and the 360 (introduced in '71) became the midsize engine, the 440 was built until 1978 but at lower compression ratios.



All the Chrysler blocks are cast with the engine size somewhere on the outside of the block, the 440 has a pad in front of the intake manifold on the left side of the engine stamped "440", all big blocks 383, 400, 440 and 426 Hemi (massive valve covers) have a front mounted distributor on the right side of the engine that sits at an angle. All small blocks 318, 340 and 360 have a rear mounted distributor.



There are small differences as well, engine colors, air cleaner designs, and exhaust manifold configurations just to name a couple.Whats the easiest way to tell the difference between the different mopar v8's (60'S and 70's)?
the ones from the 60,s won't have smog pollution pump on them and you can also tell the difference in them by the intakes they got on them, the ones from the 60,s doesn't have the large port for the vacuum hook on in it that has the one large hose and three small ones on it,it only has a port with two vacuum lines going to it,another way to identify them was the newer ones had an egr valve and the older ones didn't,that the easy way to look at them an identify them,without going in to details,good luckWhats the easiest way to tell the difference between the different mopar v8's (60'S and 70's)?
it would be very hard to tell just by looking at them . it would be easer to tell the size then the year just by looking the for sure way to check the year would be from the casting numbers