engine id

BIGSARGE

Junior Member
Location
ft riley ks
please help me with identifying this motor in my truck:
casting #3999289 motor#TO327TSD T5F716883. I think it is a 454 but know nothing else about it such as what it came out of, year, 2 or 4 bolt mains, compression, hp/torque etc.... any help you guys can give would be greatly appreciated.
 
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BIGSARGE

Junior Member
Location
ft riley ks
thanks for the info. Mortec only had the casting # which showed a 454 2 or 4 bolt mains. so I guess I need help with the actual engine # which I think maybe a GMC motor but other than that I'm stumped. Can't call the 1-800 number yet as I am in the Army and in the field! Once again I appreciate your help in this!
 

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