Small Block Heads

TA heads are not the same casting as the X head...they are basically J heads or wait...O...or U heads...has 360 casted into the head under the valve cover....TA heads share the same casting number as the J head....but are listed under a different part number due to the intake pushrod being drilled at an angle,,,,so stock they offer no performance increase of the standard head but they come with their own rocker arms....

many time on Ebay you will see someone advertising TA heads but the intake pushrod is not offset.....that is becuase they are the same casting number....and they dont know how to tell them apart.