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4.2 really that underpowered?

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mechanic80:
My 87 Eagle with the straight 6, neutered and with a 2100 Motorcraft carb  (jetting is best selected for this altitude) has little if any reserve power. Ignition advance is per formula taking altitude into account.   Granted, @ 7300' altitude in New Mexico you see few Eagles soaring that high (real or otherwise.)  I've found that letting it warm up for at least 5-8 minutes is necessary for any reasonable stoplight getaway, and it'll do 85 MPH downhill on the freeway!  I guess the question is, does anyone have any tips on squeezing an extra few horses from the engine?   Mileage on the car is about 154000, no smoking and when warm idles great.  MPG varies but being mostly highway,  is between 18-222 depending on weight of right foot.    I primarily use it for heavy snow days and boy, does she love that!   It'd just be great to have a little more "oomph" climbing those hills outside Albuquerque on the way home.  :amc:

youngkyle:
222 MPG? man I wanna get in on that action.  I don't know anything, but I'd be interested in this too.

eaglefreek:
Auto transmission? They are pretty anemic. The high axle gearing and a very mild camshaft are probably the major reasons they seem underpowered. My first Eagle, an 81 wagon with a manual 4 speed, seemed a bit quicker than my 86 automatic. Installing a 4.0l head and a different camshaft made a world of difference on my 86. I've also installed 3.08 gearing, but plan to go to 3.55's since I've installed an AW4 transmission.

IowaEagle:
Any smog stuff still active on it?

mechanic80:
Would you believe.....22 point 2?  :amc:  Lets mark that up to fat fingers.  And no, no emission systems are active.  The neutering was very successful .  :amc:  I'd consider the head swap, but as little as I use it, I can deal with an extended warm-up and lackluster power.  BUT IT SURE TACKLES THE SNOW!!!!!!!!!!!!

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