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Re: 383 Stroker Vs. 454 Big Block
^ I've seen several 454's in front of OD trannies that are in the 12 - 15mpg range. I've also seen a few nasty smallblocks that couldn't get 10mpg downhill, downwind.
You're certainly right about the difference, though. A 454 is just beginning to run good at 500hp where a 383 is beginning to strain.
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