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Speed Demon 850!
I have a Speed Demon 850 on my 427fe and it runs great!
It was not 'out of the box'.
It was 'tweeked' by Tom at FE Specialties when he installed it.
I'm very happy with my Demon.
It was part of the complete 66' 427fe side oiler engine package that dyno'ed at 603/635. Wow!
What more could you want from a 40 year old iron block?
jdog
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"If you can't run with the BIG DOGS, stay under the porch!"
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