Quote:
Originally Posted by ksa8907
If you want better mileage on the highway you really need to slow the engine down more. Peak torque at 2k and you're running down the road at just under that? I'd look for better rear gears.
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Thanks for the suggestion. Yeah, that might be something I'll do down the road. I want to see where I'm at first with the new transmission though. There are lots of options for the 8.8 rear end considering that they come in Mustangs and Crown Vics, so I should be able to pick up some take-offs pretty cheap. Is there a specific target, percentage-wise, under the peak torque number that I should be shooting for? I've heard that these 4.9L motors get worse if you go too low in the RPM range too, so I want to avoid that if possible.