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AMC Stock rubber motor mounts |
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WesternRed 
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Joined: Aug/03/2010 Location: Australia Status: Offline Points: 5796 |
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 Posted: Jun/22/2018 at 8:01pm |
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I've welded an additional piece of flat bar on mine to make sure they can't come apart, also limits movement so the rubber doesn't get over stretched:
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401MATCOUPE
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Joined: May/20/2010 Location: Salisbury, MD Status: Offline Points: 5367 |
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Posted: Jun/23/2018 at 5:49am |
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Rich...
Here is a picture of my NOS Complete 1973 401 engine, with those mounts installed at the Kenosha Engine Assembly Plant. If you can see in the pic these are 1973 unique mounts with the studs NOT in the middle of the mount.  |
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Ross K. Peterson
68X,GoPac,343,AT,52A(1stCar) 68X,GoPac,390,4sp,52A 69X,GoPac,390,4sp,64A 70X,GoPac,390,4sp,87A,8 70X,GoPac,390,4sp,BBO,8 70 Jav SST,390,AT,BSO 74MatX,401,AT,Prototype 74MatX,401,AT |
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PHAT69AMX
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Joined: Jul/07/2007 Location: West Virginia Status: Offline Points: 5918 |
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Posted: Jun/23/2018 at 12:02pm |
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I got a '73 Ambo Wagon 401 a few years after I got my '69 AMX and of course
the stock 401 and 727 got swapped into the AMX for awhile... then another motor or two... This was before the interweb, I was not aware nor did I notice the '73 Mount offset... and have no idea if I did or did not at one time or not mistakeingly use the offset mounts or if they may be in the car as it is right now....
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304-dude
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Joined: Sep/29/2008 Location: Central Illinoi Status: Online Points: 9082 |
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Posted: Jun/23/2018 at 12:46pm |
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Just wondering myself, as I removed my original 73 engine, to swap in a 75 engine. Was the 73 offset carried over into a few years run time? Never saw any issues as for noticeable clearance with fitting tranny to the mount, and head to firewall.
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71 Javelin SST body
390 69 crank, 70 block & heads NASCAR SB2 rods & pistons 78 Jeep TH400 w/ 2.76 Low 50/50 Ford-AMC Suspension 79 F150 rear & 8.8 axles Ford Racing 3.25 gears & 9" /w Detroit locker |
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401MATCOUPE
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Joined: May/20/2010 Location: Salisbury, MD Status: Offline Points: 5367 |
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Posted: Jun/23/2018 at 6:14pm |
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Offset mounts were only used in 1973 for 80 Series cars (Ambassador), there is a left and right, with different part numbers
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Ross K. Peterson
68X,GoPac,343,AT,52A(1stCar) 68X,GoPac,390,4sp,52A 69X,GoPac,390,4sp,64A 70X,GoPac,390,4sp,87A,8 70X,GoPac,390,4sp,BBO,8 70 Jav SST,390,AT,BSO 74MatX,401,AT,Prototype 74MatX,401,AT |
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Ram Air Rick
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Joined: Jul/04/2007 Location: United States Status: Offline Points: 2668 |
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Posted: Jun/23/2018 at 10:50pm |
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Hey guys....
At this point I just wanted to say "Thank You", to all who contributed to this post here. I learned everything I'd hoped to learn and more. Please feel free to add comments and information you have. Rich C.
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Dave Z
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Joined: Jul/02/2007 Location: Massachusetts Status: Offline Points: 300 |
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Posted: Jun/24/2018 at 6:50am |
Checking the parts books, Ambassadors used the same engine brackets 67-74, the same cross member 71-74, but used mounts with left and right part numbers only in 73. So the engine sat differently in the engine compartment 73 only? I also see Matador had L/R mounts in 1973. Dave Z |
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jpnjim
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Joined: Nov/25/2007 Location: New England Status: Offline Points: 2752 |
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Posted: Jun/24/2018 at 6:58am |
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the rearset mounts are very interesting,
I never heard of them before, why a 1 year only thing? I wonder if the negatives outweighed the positives so they changed it back(?). Would be interesting how the offset would effect things if used in other bodies (like the Javelin). Very curious.
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71 P-code 4spd Javelin/AMX
some Jeeps and some Fords |
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304-dude
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Joined: Sep/29/2008 Location: Central Illinoi Status: Online Points: 9082 |
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Posted: Jun/24/2018 at 7:56am |
I would guess if you needed some clearance at the tunnel, flipping left to right could shift the motor just a whisker forward if needed. Now there would be a wee scramble to obtain them 73 Ambo mounts for some trick tranny swaps. It's not a lot of offset, but 1/2" or so, just an odd a one one at that with it being a one year thing with the V8 mounts. |
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71 Javelin SST body
390 69 crank, 70 block & heads NASCAR SB2 rods & pistons 78 Jeep TH400 w/ 2.76 Low 50/50 Ford-AMC Suspension 79 F150 rear & 8.8 axles Ford Racing 3.25 gears & 9" /w Detroit locker |
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401MATCOUPE wrote: