so it could have been a kit car development? LD340 just had the larger 340 size ports that the LD4B. T/A heads were stock square port not sure why this got the T/A moniker? still cool as heck.
No casting datei don’t think the T/A level has any direct relationship to the 1970 Trans Am effort.
what is the casting date of the intake? (if there is one).
The 1970 T/A heads did not have W-2 offset rockers and they had unique rectangular ports. They might have had the same casting number. But they were not the same casting.
I don't believe the manifold face has been cut, and a lot of intakes, several of mine included were intentionally slotted for not only different deck heights but also aids in the ease of getting bolts started. Wall hanger to you maybe but I guess if I ever did want to use it I know enough talented people that could easily overcome any issues that a person may encounter in order to use this on any deck height.That is a W2 dual plain intake for use with W2 heads. for low end torque off the turns in roundy round or Trans am racing. I saw it and was interested but it has been cut for an extremely decked block. More then likely 900 deck height which was common. for Trans am racing or oval track short stroke. Note the holes have also been ovaled for fitment to the decked block. Basically a wall hanger. Its far from equivalent to a standard LD340
T/A heads were identical ports to 340 915 castings. The only difference was relocated pushrod hole so the pushrod bump can be ported out of the intake port.