390 or 352


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By c1flyout - 14 Years Ago
I got a 63 t-bird from a auction the owner said that it had a 390 motor in it, but i dont think it is. I looked on the motor and the only things i found stamp on it was c3ae9425b, c6aeu and 25/352. so what is it any help would be great.
By MoonShadow - 14 Years Ago
The 352 casting is found on 390's. You probably have a 390. Chuck in NH
By Missouri Mike - 14 Years Ago
  c1flyout-

 I seem to recall reading all FE motors (352,360,332,390etc) were stamped with that 352 and it had nothing to do with the displacement although I don't recall the reason for that particular number being on the FE blocks.

 My Ford reference books show nothing smaller than a 390 being offered in the T Bird in 1963. The T Bird engines all carried a name like Thunderbird V8,Thunderbird Special,Thunderbird High Performance or something to that effect.

  My guess would be it probably is a 390.

  Good luck with your "new" car.

      Mike

By speedpro56 - 14 Years Ago
My 390s have the 352 on them as well which is common. The 63 bird should without a dought have a 390 in it.
By Ted - 14 Years Ago

You give several numbers.  What were the numbers on the block?  If you can clarify the locations of the various numbers, that may help.  If you look directly under the oil filter pad, the date code for the block will be located there.

By Y block Billy - 14 Years Ago
The 9425 "B" (4bbl) is a manifold number, the c3ae designates it is a 63 auto engine.

I have a 62 Galaxie that had 390 decals on it but believed to be 352. I was told the oil pan is shaped different, and if a freeze plug is removed there is an identification mark in there.