I have a 1970 Challenger R/T with a 383 engine currently in it. I have two questions. 1. The cast date code is 8-28-69 (1970 model year engine) and there are no stampings on the machined boss by the distributor so is this a warranty replacement block? 2. Do all 383 HP engines have the "letter-year 383", "HP", and date stampings on that machined boss? This engine has the last 8 digits of the VIN of the car stamped on the pan rail but I'm almost positive that it isn't numbers matching. Thanks!
