....from what I understand the D2ve's have no quench area and are completly open chamber which are prone to detonation.
Correct, the D2VE-AA cylinder head is a single year 1972 production model cylidner head...comes in at about a 100cc combustion chamber volume. It is the only 429/460 mass produced passenger car applicable open chamber head.
A lot of people view the D3VE as the original "smogger" head, but the fact is that the D0VE's were used through the 1971 model year and then the D2VE replaced the D0VE's for 1972, thereby making it the true original smogger head. Ford's idea was to dramatically lower compession with its big cavernous open chamber. The heads proved to be so horribly detonation prone that Ford quickly ditched them and came out with the the D3VE. What they actually did was look back at the head that worked--the D0VE--and then recreated it
but lowered the combustion chamber 0.100" deeper into the head so as to increase volume and lower compression. This way, the combustion chamber volume was increased but the quench pad was retained.
Incidentally, since the chamber is 0.100" lower in the head, the D3VE (and later) heads use a valve with a 0.100" shorter overall length than the earlier (C8VE, C9VE, D0Ve) heads. Trade Secret: This means that the early head spec'd valves can be used as +0.100" long valves in a D3VE head!
As with all 429/460 factory iron used in high performance builds, porting helps measurabley.
LO
