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Howdy all,
I have two questions for you casting number gurus. This is in reference to the 460 (supposedly) from a 70's something Lincoln now in my '73 F-100.
One: What do the casting numbers 02VEAA mean on my cylinder heads?
Two: Where are the block casting numbers? Do I have to pull the starter to see them or can I just remove the passenger wheel and peek in maybe?
I dont know what the numbers mean but i am pretty sure you have to pull the starter off(i did) to read the numbers. I just found out what year my motor is the other day.
Good luck
Chase
1979 F-250 4x4
460 Holley650, MSD OFFROAD, Flex-a-lite fan
C6-B&M Transpack
Dana HD44Front/60Rear 3.73 Limited Slip
35 inch Goodyear Implement Tires
4 inch Skyjacker System
[font size="1" color="#FF0000"]LAST EDITED ON 16-Aug-01 AT 01:48 PM (EST)[/font][p]
Howdy all,
I have two questions for you casting number gurus. This is in reference to the 460 (supposedly) from a 70's something Lincoln now in my '73 F-100.
One: What do the casting numbers 02VEAA mean on my cylinder heads?
Two: Where are the block casting numbers? Do I have to pull the starter to see them or can I just remove the passenger wheel and peek in maybe?
The actual # you're looking at is D2VEAA. The D means it was a 70s casting, the 2 means it was a '72 casting, the V stands for Lincoln although most 460s, even the ones in trucks, have the V designator and the E stands for Engine. The AA is a revison code. Basically what you have there are the first generation of "smog" heads for the 460. They have 91 cc comb. chambers, 2.08/1.66" I/E valves and non adjustable rockers.
You will probably have to remove the starter to check the casting # on the block although you may be able to sneak a peek with a "mirror on a stick".
also, you can look at the build date number stamped into the front of the block....it is on the machined surface high and to the passenger side of the timing cover...you will probably need a small wire brush to clean the area if it's too dirty to see anything....
well i know ford has done some different things in the many years they have been around. about the D2VE heads they might be the first gen. pollution heads, but these heads have no e.g.r. recirculation port drilled into the casting for the exhaust ( crazy eh ) they might have a big c.c. volume they have nothing to up any pollution crap to. it's also kind of crazy that they have the V for the cast referring to Lincoln, but all of these heads that i've gotten and i've seen several have come of Thunderbirds. i don't ever recall seeing these casting numbers on Lincoln's. has anyone seen this casting number on a Lincoln? i know this because i have 4 sets of these heads and i checked them all,( D2VE-AA & A2A ) no holes to plug. now this might throw all of ya for a loop. i also have a set of 1971 yes '71 460 heads ( D0VE-C ) that has the e.g.r. port drilled thru the head. these are a matched pair 0L11 & 0L12.. unless these were a late cast for the '72 model year. i don't have any refernces right at the moment to find out... ya'll have a great weekend! C.J. .................................
Correcto-mundo, no "smog" ports drilled in the exhaust runners on mine either. Actually if they had drilled ports they would technically be fresh air ports and not EGR. EGR is bled-off exhaust that is recirculated back through the intake manifold for a second burn. The drilled ports in the exhaust runners are there for the "smog pump" to pump fresh air into to promote oxidation of the dirty hot exhaust gases as they leave the engine. So anyway, if I find a big blue motor in a 1968 T-Bird is it likely to be a 460 or a 429 then?
If we really want to split hairs, technically the EGR gas that is bled off to recirculate is considered inert and does not get burned "again". It used to absorb combustion chamber heat and prevent the burning of nitrogen gas that creates NOX pollutants.
Well, that sounds just a little too text book to be entirely accurate in the real world. Exhaust gas, especially on "low tech" engines like the 460, can be full of unburned hydrocarbons that will quite happily "burn again" when recycled through the combustion process. I can also see how EGR would serve to quench combustion temperature though. Apparently NOx is formed at elevated combustion temps then? I thought it was a product of an excessive lean burn. Of course lean burn means elevated temps. Hmm....
Your right, this is all text book engineering side explaination. Your conclusion on the elevated temps forming NOX is right on. As you point out even when the engineers call it 'inert' the EEC computer will lean the injectors when it opens the EGR valve - so the engineers figure something in there is still burnable. Also this leaning of the mixture may be the reason people get worse performance from EFI engines when they simply unplug the EGR system.
Also a lean mixture burns hotter than a rich mixture. I didn't understand where you were going with that train of though...
I`m a newbie here, but i have a set of D2VE-AA that still have the old fashioned big sparkplug. might I be lucky enough for those heads to still be tight chambered also? I mean, i know the D2`s were the first with 14mm spark plugs but mine arent. there still on the engine so I cant just flip`em over. also does the cam behave the same way in either engine 429-460 or does the shorter travel time and dwell at t.d.c. affect carge?, will it be more in a 429 or less?