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 Blocks / Cranks/ Rods and Pistons
 70 455 9799140 FX code 4 bolt mains
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bober
Sitting Bull

142 Posts

Posted - 11 Jul 2017 :  10:32:14 PM  Show Profile  Reply with Quote
Other than only year for High compression eng. Anything special ?

cortcomp
Coyote

USA
5335 Posts

Posted - 12 Jul 2017 :  10:09:11 AM  Show Profile  Visit cortcomp's Homepage  Reply with Quote
I'm pretty sure that's what's in my 69 gto (70 gto block transplant.) AFAIK, it's the same as any other 455 block along the line except the SD.
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bober
Sitting Bull

142 Posts

Posted - 14 Jul 2017 :  10:02:56 PM  Show Profile  Reply with Quote
It is actually a 70 455 XF w/4/bolt mains . Listed as High compression 455 . Thanks

Edited by - bober on 14 Jul 2017 10:03:35 PM
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cortcomp
Coyote

USA
5335 Posts

Posted - 14 Jul 2017 :  11:17:31 PM  Show Profile  Visit cortcomp's Homepage  Reply with Quote
The heads would determine the compression, and many 455 blocks were drilled and tapped for 4 bolt mains but didn't get the caps. I don't recall there being a weaker 455 block like the 557 400 block. A good score for anyone restoring a 70 goat for sure.
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