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  • October 13, 2019, 08:58:50 PM

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Author Topic: 4.0 into a Gremlin  (Read 8915 times)

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Offline Amc1320

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Re: 4.0 into a Gremlin
« Reply #15 on: November 07, 2013, 10:01:14 PM »
The intake is actually from an 83 Spirit

The aluminum intake from like  81 and up works good on a 4.0 is you are going to carb it, very little modification to make it work. Your just have to grind off the "ears" on the dowel lobes a little, then it sits on top of the 4.0 dowels

You do however have to use the 4.0 exhaust manifold, the older ones wont work at all ad the holes in the head are different. The 4.0 has a kinda sorta header type exhaust so that's a plus for a little extra power.

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

Offline Prafeston

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Re: 4.0 into a Gremlin
« Reply #16 on: November 07, 2013, 10:11:29 PM »
Here is the write-up I'm currently working on.

https://docs.google.com/document/d/1OFrPDmtJTA8cbtu0DzGItxBQdy9Wo6K3sxZqfpk-pxM/edit?usp=sharing

Will I need new exhaust and intake manifold gaskets? Do I get 4.0 ones all around or since I'm using a 4.2 intake do I need to get a 4.2 intake gasket?
1983 AMC Eagle SX/4 - Penny

Offline Prafeston

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Re: 4.0 into a Gremlin
« Reply #17 on: November 07, 2013, 10:14:55 PM »
Sorry to steal the thread a bit. Gremlin is looking good. Can't wait to see it finished! How many AMCs do you own?
1983 AMC Eagle SX/4 - Penny

Offline 1985amceagle

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Re: 4.0 into a Gremlin
« Reply #18 on: November 07, 2013, 10:20:46 PM »
looks like the gremlin is coming along well
Here is the write-up I'm currently working on.

https://docs.google.com/document/d/1OFrPDmtJTA8cbtu0DzGItxBQdy9Wo6K3sxZqfpk-pxM/edit?usp=sharing

Will I need new exhaust and intake manifold gaskets? Do I get 4.0 ones all around or since I'm using a 4.2 intake do I need to get a 4.2 intake gasket?

do you care if this would eventually be added into bothe the evo wiki and the eaglepedia?
1985 Eagle Wagon

Offline Prafeston

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Re: 4.0 into a Gremlin
« Reply #19 on: November 07, 2013, 10:30:32 PM »
Fine by me. Hoping it can be of some use when it's completed. It seems there is a lot of good 4.0 info scattered all over the place and I was just looking for a simple concise guide with everything I'd need to know to do the swap without getting too long winded about everything.
1983 AMC Eagle SX/4 - Penny

Offline Amc1320

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Re: 4.0 into a Gremlin
« Reply #20 on: November 07, 2013, 10:40:24 PM »
Good write up!

Use the 4.0 gasket for the intake/exhaust manifolds

We have run into several things but have figured them out so far!

I have three AMC's that run , my dad has 3 as well , they are all community cars and we work on the toghether, my dad, my son and I

We also have a couple of parts cars and of course a whole pile of spare parts!
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

Offline Prafeston

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Re: 4.0 into a Gremlin
« Reply #21 on: November 07, 2013, 10:56:04 PM »
Right on! A family operation! Yeah if you see anything on the write-up that needs changed/added let me know!
1983 AMC Eagle SX/4 - Penny

Offline Amc1320

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Re: 4.0 into a Gremlin
« Reply #22 on: December 20, 2013, 08:56:12 PM »
Ok, this project has had some delays due to workin all the dang time.....

But this evening got the electric fuel pump hooked up, starter on, clutch linkage on, a few other wires and such

AND IT RUNS!

Little tweak of the timing and she runs smooth like butter, no exhaust pipe so it's really loud, but smooth otherwise

Sometime this weekend I'm hoping to make it actually move under its own power......it was saved from the grave so that's a big deal

Great AMC day!
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

Offline eaglefreek

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Re: 4.0 into a Gremlin
« Reply #23 on: December 20, 2013, 09:02:21 PM »
Can't wait to go for  a ride in it.
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
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Offline vangremlin

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Re: 4.0 into a Gremlin
« Reply #24 on: December 20, 2013, 09:03:37 PM »
Congrats!  Always a great day when you start up a project car for the first time.
1981 Kammback 258 - "Pepe"
1980 Coupe 258 - "Ginger
1972 Gremlin X 304
1978 Gremlin 4 cyl 121 - sold
1964 TBird 390 - sold

Offline eaglebeek

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Re: 4.0 into a Gremlin
« Reply #25 on: December 20, 2013, 10:22:13 PM »
Can't wait to go for  a ride in it.
Even without the muffler!  :eagle:
1984 Eagle Wagon, 258, auto, 2.73 gears, daily driver
1983 Eagle Limited Wagon, parts; sold
2000 Jeep Cherokee, 4.0, auto
2007 Hyundai Accent, radical downsize from minivan, wife's car and she loves it!

"The society which scorns excellence in plumbing as a humble activity and tolerates shoddiness in philosophy because it is an exalted activity will have neither good plumbing nor good philosophy: neither its pipes nor its theories will hold water."--John W. Gardner, in "Excellence: Can We Be Equal and Excellent Too?" (1961)
 
Air-conditioning is so cool!

Offline IowaEagle

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Re: 4.0 into a Gremlin
« Reply #26 on: December 21, 2013, 11:51:46 AM »
Congrats on a successful upgrade!
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Not a Jeep.  Not a Car.  Its an AMC Eagle!

1982 Eagle SX/4 Sport;
1980 Concord DL;
1970 Ambassador 2 Dr HT, SST
2002 Hyundai Santa Fe;
2008 Jeep Patriot Sport - Freedom Drive II

 

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