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Building the 2.5 Iron Duke

Started by RookieSX/4, November 12, 2015, 01:13:14 PM

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0 Members and 2 Guests are viewing this topic.

RookieSX/4

My apologies if this has already been covered somewhere else but has anyone out there beefed up an Iron Duke? Been tossing the idea around in me head lately rather than swapping engines for more power...try and see what i could get out of this little 4 banger...
1981 AMC Eagle SX/4 w/2.5l Iron Duke and no 2wd-4wd switch!

Amc1320

It's been done, they used those engines in some racing applications years ago, there is also a marine version. So there are some speed parts around.

Not sure how many hp you can get out of it, but anything more would be a big help!
Rob c
84 Eagle Limited Wagon (driven everyday)
81 Eagle Kammback
81 Spirit (undergoing surgery)
83 Spirit (parts car giving it all to keep the rest going)
Manchester, TN

RookieSX/4

Awesome! thank you! Ill have to do more research to see what i can come up with for parts...
1981 AMC Eagle SX/4 w/2.5l Iron Duke and no 2wd-4wd switch!

eaglefreek

If you want to keep it a 4 cyl. I'd be tempted to install a fuel injected Jeep 2.5L.
1986 AMC Eagle Wagon 4.2L/4.0L head, AW4,NP242, Chrysler 8.25" rear.
1981 AMC Eagle Wagon As Seen On TV  Lost In Transmission




"I know he'd be a poorer man, if he never saw an eagle fly,
Rocky mountain high"  John Denver
Click for Fayetteville,TN Forecast" border="0" height="100" width="150

RookieSX/4

Its not about keeping it a 4 cyl  its about sticking with the factory engine
1981 AMC Eagle SX/4 w/2.5l Iron Duke and no 2wd-4wd switch!

Nightpath

Remember that there are 2 types of the 4 cylinder motors in the Eagles. 1 is GM made, other is AMC. I posted the sender thing on the Facebook page. The actual GM 4 banger could be beefed up a bit.

Now the AMC was plopped into vehicles for years. It might be an idea to find one that was in a 1996+ Dodge Dakota with a manual transmission. MPFI is yummy. And there are plenty of performance mods out there.

vangremlin

Did the AMC 4 cyl ever make it into the Eagles? It was the understanding that AMC dropped the 4 cylinder as an Eagle option before they brought out their own.
1981 Kammback 258 - "Pepe"
1980 Coupe 258 - "Ginger
1972 Gremlin X 304
1978 Gremlin 4 cyl 121 - sold
1964 TBird 390 - sold

Nightpath

GM 4 bangers were in the early Eagles, the AMC made them in after 82 or 83 I think.

RookieSX/4

Ok so I guess the next topic would be what transmission/T-case to hang off the back of a beefed up Iron Duke?
1981 AMC Eagle SX/4 w/2.5l Iron Duke and no 2wd-4wd switch!

jpgreen


jpgreen

Love to see it. Had an iron duke s10 and loved it.

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