318 differences 1972/1973

Compression:

67 - 69 318 had 9.2 compression.

70 - 71 had 8.8 compression.

72 - 75 had 8.6 compression.


Camshafts:

67 US had 244/244/22 .390/.390 lift 14-50-56-8
67 Can had 248/248/26 .390/.390 lift 14-54-56-12

68 - 70 had 240/248/20 .373/.399 lift 10-50-58-10

71 - 75 had 240/248/26 .373/.399 lift 10-50-52-16


All per factory service manual.

I don't go beyond 75.....