Have a 1983 ck 20 3/4 ton truck with a 350 truck motor and 400 turbo transmission,thunder was to have rebuilt both.Took two months then when l got my truck back it was not my motor and transmission.The numbers on the block had been grid off had to run a history check on the heads.The motor came out of a. 1970 to 1972 Z28 camera with a 700 r transmission in it cost me $6,463.68 for a rebuild job.Told Steve this was not my motor and transmission in my truck told me this was what they took out of my truck.I can not tow anything now because motor is not right size.