Quote Originally Posted by roostracing
this is some very good info... i have a d3ve block...cant remember the following letter...i was curious to as to what i have..a 429 or a 460...i will post up with the exact info for clarification
D3VE-A2A is a cylinder head casting number. Those heads were used on both 429s and 460s from 1973 through 1986, but they were on 429s for only one year: 1973.

What you can do is remove a valve cover and look for the alphanumeric casting date in the valve train area. Should be something like "3B20" or "7D27." If you can get this number and your engine is original as from the factory (not rebuilt), then we can determine if it is a 1973 or later engine which in turn will tell us whether or not you have a 429 or 460 (unless it is a 1973 casting, in which case it could be either a 429 or 460....but there are deeper probiing markings to look for that may confirm one way or the other).

Paul