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360 iin a SX/4 = how difficult?

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greasygt View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote greasygt Quote  Post ReplyReply Direct Link To This Post Topic: 360 iin a SX/4 = how difficult?
    Posted: Feb/13/2012 at 6:20pm
Presently I don't know what size the motor is in it. But if its the 6 what would need to be changed other than the cross member?, and if its the 4, could it be done without cutting and welding?  Thanks Steve
greasy                        83 Spirit GT. 79 Ranchero GT.             
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fast401 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote fast401 Quote  Post ReplyReply Direct Link To This Post Posted: Feb/13/2012 at 10:09pm
I saw a spirit/eagle with a 401 in it several years ago.  I do remember that he had to use an oil filter adapter from a V8 Pacer for clearance.  He also could not keep axles in it!!!
Disturbing the peace since 1970!!!   AMX 19245

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Post Options Post Options   Thanks (0) Thanks(0)   Quote amxdreamer Quote  Post ReplyReply Direct Link To This Post Posted: Feb/13/2012 at 10:17pm
Not mine but was at a Rendezvous show a couple of years ago. Well done car!
 
 


Edited by amxdreamer - Feb/13/2012 at 10:17pm
Tony

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1970 AMX 360/auto
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billd View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote billd Quote  Post ReplyReply Direct Link To This Post Posted: Feb/13/2012 at 10:25pm
The 4 will take a whole lot more work. The engine mounts for the 4 are totally different, the crossmember, transmission, a lot. The engine mounts for the iron duke are really weird, the engine sits on rubber donuts and there are bolts sticking up through, not at all like you think of with the 6 or 8.
You'll have to make supports for the front differential, you'll have to offset the engine to the right a bit, exhaust will be harrowing.
The crossmember is unique to the Eagle - no other AMC car crossmember will bold in directly.
Here is how the right side of the differential is hung:
 
Left side - the differential is hung from a bracket by the motor mount, and kept from twisting by a bracket on the block going to the pinion area - here I had to make a new one due to exhaust clearances
 
Normal brackets that hold differential on engine
 
The Eagle crossmember - for the 6
 
Differential in place hanging from engine
 
Right side - differential in place, hub where axle half-shaft bolts on
 
Another view of cross-member
 
 
Putting engine back in
 
 
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Post Options Post Options   Thanks (1) Thanks(1)   Quote AMC instigator Quote  Post ReplyReply Direct Link To This Post Posted: Feb/13/2012 at 10:49pm
I have made a couple Eagle v-8 cars, it is not too bad, but as you can see from what Billd shows you, there is work to do and fabrication involved. As he suggested the crossmemeber for the Eagle is not replaceable with a std v-8 Gremlin or such, you have to "make" the Eagle one work. Along with the differential brackets that have to be built, the v-8 small car manifolds work good, but the best set is from a 70[log style dog leg port] on both sides, or the 81 and up Jeep driver side, 78-79 v-8 pacer driver side and the small call pass side, or 75 and up all model pass side [still the log style]. This allows the clearence for ex and the bracketry. It can be done, fabbing and work, but is not a bolt in deal. Thinking out of the box is needed alot of the time. Hope that helps, SH
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Post Options Post Options   Thanks (0) Thanks(0)   Quote cmyamc Quote  Post ReplyReply Direct Link To This Post Posted: Feb/14/2012 at 7:25am
Here is a site with more help with the eagles.
http://forums.amceaglenest.com/
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billd View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote billd Quote  Post ReplyReply Direct Link To This Post Posted: Feb/14/2012 at 7:43am
Originally posted by AMC instigator AMC instigator wrote:

I have made a couple Eagle v-8 cars, it is not too bad, but as you can see from what Billd shows you, there is work to do and fabrication involved. As he suggested the crossmemeber for the Eagle is not replaceable with a std v-8 Gremlin or such, you have to "make" the Eagle one work. Along with the differential brackets that have to be built, the v-8 small car manifolds work good, but the best set is from a 70[log style dog leg port] on both sides, or the 81 and up Jeep driver side, 78-79 v-8 pacer driver side and the small call pass side, or 75 and up all model pass side [still the log style]. This allows the clearence for ex and the bracketry. It can be done, fabbing and work, but is not a bolt in deal. Thinking out of the box is needed alot of the time. Hope that helps, SH


THANK YOU for that much better explanation. I thought someone here had done it. I know I've seen a couple somewhere.
The nice thing about the Eagle is that you can do what I did.... Drop the ENTIRE drivetrain out the bottom. take a lot of photographs, measure in a lot of places point to point, take notes, and you can fabricate quite a bit with the drive-train on dollies on the floor. You could even test fit as well, as rolling the assembly under the car and lowering the car down onto it is really simple.
In fact, so simple I did it one-handed while my arm was in a sling after surgery to have my bicep reattached. I'm left handed and it was my left arm. If I could do the mock-up, and slide it under and get the car aligned for a test fit like that, seems anyone here could do it.

Good info on the exhaust fitment, too. There's a problem on the left side since the differential and driveshaft and t-case are in the way on the left, that's why the exhaust pipe makes a sudden right turn under the bell housing, then back along the right side.

OH - anyone putting a V8 in an Eagle needs to keep in mind - these are the 15s, not the 20s turning the wheels, so beware.......... They are not heavy differentials.
But in my opinion, will still take a lot of load.
The V8 will be a bit heavier as well, not sure what that will do to the front springs. I know I had to put a bit heavier springs in my car, but the fronts were AMC 6 cyl springs I had in it - WAY too wimpy! The Eagle comes factory with V8 springs under the front to support the weight of the drive-train.


Edited by billd - Feb/14/2012 at 7:46am
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Post Options Post Options   Thanks (0) Thanks(0)   Quote nickleone Quote  Post ReplyReply Direct Link To This Post Posted: Feb/14/2012 at 2:49pm
My 390V8 AWD  AUTOMATIC SX/4 Pro Rally car had the eagle crossmember.  The front differential was hung from the crossmember.  New motor mounts were fabbed to fit the V8 to the cross member.  The auto trans softened the blow to the drive train.  I do not think the eagle 4 or 5 speed will stay together.  The previous owner of the car had manual trans problems with a hot 6.  He rebuilt the trans after every race.  I would recomend the 727 behind the 360. Suspension wise the fronts were 400# springs which kept the car off the crossmember.  The rears needed traction bars to keep the axle from winding up and bending the leafs.
 
Have fun,
Nick
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Hypereagle Quote  Post ReplyReply Direct Link To This Post Posted: Aug/07/2012 at 3:39pm
Originally posted by greasygt greasygt wrote:

Presently I don't know what size the motor is in it. But if its the 6 what would need to be changed other than the cross member?, and if its the 4, could it be done without cutting and welding?  Thanks Steve

Go into the eagles nest forum and you can see the mounts that I fabricate for AMC V8 s. cutting and welding are needed but is fairly minimal. For oil filters I did use a Pacer filter housing. A remote will be easier to use.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Hypereagle Quote  Post ReplyReply Direct Link To This Post Posted: Aug/07/2012 at 3:40pm
Originally posted by greasygt greasygt wrote:

Presently I don't know what size the motor is in it. But if its the 6 what would need to be changed other than the cross member?, and if its the 4, could it be done without cutting and welding?  Thanks Steve

Go into the eagles nest forum and you can see the mounts that I fabricate for AMC V8 s. cutting and welding are needed but is fairly minimal. For oil filters I did use a Pacer filter housing. A remote will be easier to use.
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