1969 GTO 400cid engine mystery
I'm driving myself nuts trying to figure out what the engine in my 1969 GTO is all about. Here's my dilemma---all of the casting numbers on the block seem correct for a 1969 400cid (i.e. Type code YS,Date code B289,Feb 28,1969,casting number 9790071, production # 0599899) except there is no VIN number stamped on the block front next to the timing chain cover like there should be. There is a nicely machined pad but no number stamped on it! Did some factory engines miss getting the VIN stamped on them or what? All the other component numbers seem right--for example the heads date coded C049/C059(march 4th & 5th, 1969), intake manifold date code C119(March 11,1969) . Any ideas anyone?