Originally Posted by stoneheart
I have a 460 or 429 engine...But i am not sure which...It has D9TE-AB on the block also i see GP 82859 on the block, intake manifold says C8SE-9425-B DATE CODE IS 8A19, HEADS SAY D3VE-AZA and DATE CODE IS 5C31..Eric
The 429 crankshaft will NOT fit into a D9TE block (without modification) because that block was revised and used from 1979 through the end of 460 production. The revision included extending the cylinders deeper toward the rotating assembly...so the pre-1979 429 and 460 cranks will not fit. Since the 429 ended production long before that block was made, it is not possible to have a 429 crank that will drop into it. So you must have a 460 bottom end (unless the block was modified to accept the 429 crank--highly unlikely).
A heads are a 1973 engineering revision head; your particular heads were cast in 1975. Your intake manifold was cast long before that. It appears as though your engine was assembled from various year 460's. Not necessarily a bad thing.
Other ways to evaluate whether you ahve a 429 or 460:
One way is to flip the motor over and unbutton the pan. One of the crankshaft countrerweights has alphanumeric markings stamped on it's edge
, and these markings identify whether it's a 429 or 460 crankshaft.
429 = 4U, 4UA or 4UAB
460 = 2Y, 2YA, 2YAB or 2YABC....or 3Y or 3YA.
Also, for quick identification of the crankshaft, you may look for the nodule or embossment between the first main journal and counterweight. The 460 is embossed there, while the 429 is not: