I'm going through this debate right now - Last build of my SBF I put on too big of heads and with low CR and a small cam I have classic low end sogginess. At this point in my life I think I would really appreciate a full on OEM programmed combination - With the twins, I am never lacking for all out power, but I want it to have GREAT throttle response and OEM manners rather than me programming it on an aftermarket EFI and guessing at a good combo. The two options are LS or Coyote, and the Coyote will just not fit (custom tube chassis).
But a Mustang like mine cannot have an LS motor...Tried it in my mind, couldn't do it. So when I get back to the engine I'm thinking of ponying up having Kaase or someone equivalent take my good parts and specify a killer top end combination but even with pro help programming it will never match OEM based EFI LS driveability and startup and mileage. I love the idea that with modern heads and cam technology and a sheet metal or ITB manifold, I can have something a little wonderful compared to the past, but its definitely not going to be as ea$y as the modern LS combos.
So I hate to agree with the argument, but brand heritage is the ONLY reason I don't go with an LS. Plus, I guess its a little bit more interesting when bench racing to have the old skool motor. And that Coyote makes good power, and winds up high, but...its still just a 5.0 too.
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