Re: 1970 CKN engine code
CKN is the engine code for 1970 Chevelle or Monte Carlo LS3 402-330HP engine with M40 T.H. 400 transmission and is listed on the build sheet in box 97-98 as AC-LABELS 400-330HP and in the lower section in box 107 under the RPO code listings for LS3 V8 400 CI 4 B
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