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Old 01-12-2010, 04:12 PM
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Originally Posted by cobalt327
The "CMJ" suffix is:

Code Year CID Vehicle HP RPO Trans Carb Comments
CMJ '75 350 Impala 145 L-65 TH 350 2-Brl A.I.R.
CMJ '75 350 Chevelle 145 L-65 TH 350 2-Brl A.I.R.
CMJ 80 305 Impala 155 LG-4 TH 350 4-Brl
CMJ 91 350 Cadillac 185 L-05 700R TBI

Combined w/the casting number 3970010, which is:

350...69-80...2 or 4,

this is a 1975 350 from either an Impala or Chevelle.

I think you decoded the block in the Chevelle.
"Suffix casting on right front of block#VO482400, No letters or partial vin."
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