Re: [AMC-list] 4.0L mileage

[Bruce <bruce.griffis@xxxxxxxxx>]

Dan - will we see your '79 AMX in a Hemmings issue? I love the AMC 
content of the magazine, and especially love the daily drivers. Need to 
re-up my subscription. Been missing the Hemmings!

On 03/20/2013 02:30 PM, Dan Strohl wrote:
> I get about 25 MPG +/- 2 or 3 from the 4.6-liter stroker in my '79 AMX.
> I'm still fiddling with the MAP sensor voltage, so there may be some
> improvement there. Of course, I'm driving it more for smiles than
> mileage, so I tend to be a little heavy with the right foot.
>
> dan
>
>
> Date: Wed, 20 Mar 2013 09:31:47 -0700 (PDT)
> From: Jesse <j2sax@xxxxxxxxx>
> To: "wrambler242@xxxxxxxxxxx" <wrambler242@xxxxxxxxxxx>,	"Rambler
> AMC,
> 	Nash, Jeep and family" <amc-list@xxxxxxxxxxxxxxxxx>
> Subject: Re: [AMC-list] Mileage with AMC/Jeep 4 Cyl 2.5 EFI or 4.0 in
> 	an	80's AMC
> Message-ID:
> 	<1363797107.42934.YahooMailNeo@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>
> Content-Type: text/plain; charset="iso-8859-1"
>
> That's good to know! ?I imagine the numbers in a Spirit might be even
> better as they are a tad lighter and more aerodynamic. ?
>
> Then again, if a 4.0 could get 30, I wonder if an EFi'd 2.5 could get
> closer to 36 or even 40? ?I know there is a point of diminishing returns
> when a lack of power can translate into worse mileage for a smaller
> engine, but as light as the Spirits are (and they can be made lighter)
> It seems that like that would not be an issue. ?
>
> Either way, 30 is 50% better than he gets now! ?
>
> Have a great week,?
>
> Jesse
>
>
> ________________________________
>   From: wrambler242 <wrambler242@xxxxxxxxxxx>
> To: Jesse <j2sax@xxxxxxxxx>; "Rambler AMC, Nash, Jeep and family"
> <amc-list@xxxxxxxxxxxxxxxxx>
> Sent: Wednesday, March 20, 2013 10:59 AM
> Subject: Re: [AMC-list] Mileage with AMC/Jeep 4 Cyl 2.5 EFI or 4.0 in an
> 80's AMC
>   
>
> A properly setup 91-95 4.0L with a standard trans will get you knocking
> on the 30mpg highway number in stock form.
>
> My American will get almost 29mpg with it's AMC T5, 3:31 axle and 60
> series tires on all 4 corners. A narrower tire and keeping your rpm
> around 2000-2200 at highway speeds should get you at 30 + -. Lugging the
> engine down to lower rpms will probably cost you mpg as will getting to
> far above this window. A narrow low rolling resistant tire likely get my
> American there if traveling on level ground and not all the hills and
> winding roads around here.
>
> Slam it to the ground! Lower is better :-) keeps the air out from under
> it.
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