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Joined: May 5th, 2004, 3:15 am

May 5th, 2004, 3:18 am #1

i have a question about the motor in my fastback. i was told it was a 390 when i purchased it. the heads are the correct 390gt part numbers, the manifolds are correct also, the block is a c6me-a. i read somewhere that this is the most common 428 block. i also read somewhere that all fe motors except 428 are externally balanced. my motor doesnt have a harmonic balancer at all just a single sheave pulley. i do not have any vibrations through the drive train. any idea what i have
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Joined: May 7th, 2004, 1:38 am

May 8th, 2004, 12:40 am #2

I HAVE A 390 ON AN ENGINE STAND THAT I PULLED OUT OF A 1966 THUNDERBIRD. SAME PULLY. 428 COBRA JET ENGINES HAVE AND EXTERAL HAMMER LIKE BALANCER ON PULLY IF I RECALL CORRECTLY. IF THE ENGINE HAS NOT HAD A LOT OF WORK DONE TO IT THERE SHOULD BE AN ALUMINIUM TAG BOLTED TO THE INTAKE MANIFOLD RIGHT NEXT TO THE DISTRIBUTOR WITH THE DISPLACEMENT CLEARLY MARKED.
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Joined: December 7th, 2000, 3:26 am

May 9th, 2004, 1:30 pm #3

i have a question about the motor in my fastback. i was told it was a 390 when i purchased it. the heads are the correct 390gt part numbers, the manifolds are correct also, the block is a c6me-a. i read somewhere that this is the most common 428 block. i also read somewhere that all fe motors except 428 are externally balanced. my motor doesnt have a harmonic balancer at all just a single sheave pulley. i do not have any vibrations through the drive train. any idea what i have
http://www.network54.com/Forum/message? ... 1083769482

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Joined: December 7th, 2000, 3:26 am

May 9th, 2004, 2:12 pm #4

i have a question about the motor in my fastback. i was told it was a 390 when i purchased it. the heads are the correct 390gt part numbers, the manifolds are correct also, the block is a c6me-a. i read somewhere that this is the most common 428 block. i also read somewhere that all fe motors except 428 are externally balanced. my motor doesnt have a harmonic balancer at all just a single sheave pulley. i do not have any vibrations through the drive train. any idea what i have
http://pliverman.home.mindspring.com/index2.htm

http://www.pacificnet.net/~fastoso/castingcode.html
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