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391 fe pistons

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Old Apr 21, 2013 | 10:29 AM
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391 fe pistons

I read the other day that some of these low compression 391s have 410 pistons in them. I am looking to swap a 428 crank in it and I'm wondering if I have a chance to use these pistons. I know I can pull them out and read the numbers on the side I just want to know what you guys have to say first.
 
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Old Apr 21, 2013 | 04:31 PM
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Originally Posted by 428stang
I read the other day that some of these low compression 391s have 410 pistons in them. I am looking to swap a 428 crank in it and I'm wondering if I have a chance to use these pistons. I know I can pull them out and read the numbers on the side I just want to know what you guys have to say first.
The 390 TRUCK FE used 410 pistons to lower the comppression.

The 391 is an FT engine. Same block, but different cylinder heads, intake etc.

I wouldn't re-use used pistons.

Josh
 
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Old Apr 21, 2013 | 07:08 PM
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Why wouldnt you reuse the pistons. They are actually fairly new already and I was trying to stay away from buying new ones.
 
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Old Apr 21, 2013 | 07:17 PM
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Just make sure the piston is cast with either 410 or 390. 390-4V won't work.

Josh
 
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