Mike there were no special markings on all T/A heads service heads also came marked as 360 castings as they had to be replaceable for 7 years after being built. I think early actual purpose built T/A 340 production complete motors may have had T/A marked heads. *Pay attention to the “think” and “may” in my last sentence for the experts.* Also IF they are T/A they require their own style offset rocker arms Harlan Sharp and T.&D. Offer roller tip rockers for them.
