AAWJ vs.CFD 360 crank strength

[abdywgn]

was the CFD "casting" stronger than the AAWJ? Is that why it started use in the manual transmission engines? How long of a run did they have, IE, how many years was it used? Thanks1

 

[dogbreath]

CFD was supposed to be shot peened . I just picked up a steel 318 crank that has CFD cast on it.

 

[abdywgn]

way back when, I thought I had read that it was cast by GM. but I like the shot peening part. maybe need to dig out an old DC manual or catalog and look. Thanks again for your reply1

 

[oldkimmer]

Late 1972 and 1973 340 had shot peened cranks. 1974/75/76 360s had shot peened cranks. These were the HP motors. All mine were 4 manual trans cranks. Not sure if the HP auto cranks were shot peened. Kim