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Originally Posted by Kenney Kelley
How do you tell the difference between the 520 and the 520 T head and also what did they come on.? Does the T stand for Truck? Thank you in advance ,Kenney Kelley
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There will literally be a "T" casted into the top on the head. I believe that it refered to Tonowanda, casting facility? I personally have found them on the "truck" engines, replacement engines and even some passenger cars. Don't forget to look on 327's. They are just a better casting. Now if they ever made a 520X head that would be great!! LOL Hope this helped.