Stop in for a cup of coffee
@Icetech
Looks like it may be this....................70's casting, TE for truck engine part
The D2TE-AA (as with most FE heads since the start of 1966) have smaller intake runners (increases fuel/air velocity to improve emissions), lowered exhaust runners (apparently a unibody change - can be a problem with tube header alignment), smaller combustion chambers (more valve shrouding apparently improves fuel atomization), thermactor emissions bosses (often undrilled), and unibody exhaust manifold bosses (generally undrilled).
The D2 heads are 70's casting and have induction hardened seats for unleaded gas. Other than that both castings for the most part are identical. Just watch the exhaust bolt patterns as some are drilled for 8,14 and 16 bolt holes depending on the application and exhaust manifolds. Neither are a performance head but std FE heads used on cars and trucks over the years. The most common of upgrades is to install CJ size valves. A little port work and some chamber polishing will help also. Casting numbers will denote the decade,year,application (car or truck) and production changes. Ex C8AE-6090-H, C = 60's, 8 = 68, A = Ford part, E =engine part. 6090 = production part number for heads, H = 8 levels of changes made to design. Also parts will have a date code. The D2TE-AA heads are 72 heads hence the D2. The TE is truck engine part. 6090 the head part number and AA the level of changes.
@Icetech
Looks like it may be this....................70's casting, TE for truck engine part
The D2TE-AA (as with most FE heads since the start of 1966) have smaller intake runners (increases fuel/air velocity to improve emissions), lowered exhaust runners (apparently a unibody change - can be a problem with tube header alignment), smaller combustion chambers (more valve shrouding apparently improves fuel atomization), thermactor emissions bosses (often undrilled), and unibody exhaust manifold bosses (generally undrilled).
The D2 heads are 70's casting and have induction hardened seats for unleaded gas. Other than that both castings for the most part are identical. Just watch the exhaust bolt patterns as some are drilled for 8,14 and 16 bolt holes depending on the application and exhaust manifolds. Neither are a performance head but std FE heads used on cars and trucks over the years. The most common of upgrades is to install CJ size valves. A little port work and some chamber polishing will help also. Casting numbers will denote the decade,year,application (car or truck) and production changes. Ex C8AE-6090-H, C = 60's, 8 = 68, A = Ford part, E =engine part. 6090 = production part number for heads, H = 8 levels of changes made to design. Also parts will have a date code. The D2TE-AA heads are 72 heads hence the D2. The TE is truck engine part. 6090 the head part number and AA the level of changes.