1971 factory 318

From "How to rebuild your small-block mopar"

year cid material cast#/forge#

64-67 273 forged 2128278, 2128869, 2205700

68-69 273 cast 2658268, 2658393

67-73 318 cast 2658278, 2658393

74-86 318 cast 2658278, 2658393, 3462387
2658391

68-72 340 forged 2532457, 2843868

73 340 cast 3462387

71-86 360 cast 3418640, 3418641, 3418642


My engine has a 2658393 crank. It even still has the original steel shim head gaskets so I know its never been apart.