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Flex Plate ID

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Samuelsc360 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Samuelsc360 Quote  Post ReplyReply Direct Link To This Post Posted: May/10/2018 at 2:47pm
I have several flexplates for a 360 TF. They have a 1"X3" weight on them. I have another one that is identical except the weight is 1"X2.5". What is this one for? According to this thread the 304's have a narrow weight.  
1971 SC360
1973 Ambassador Sedan 360
1973 Hornet X 360
1973 Javelin AMC 401
1975 Sportabout X 258
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Samuelsc360 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Samuelsc360 Quote  Post ReplyReply Direct Link To This Post Posted: May/12/2018 at 4:12pm
Anyone?  
1971 SC360
1973 Ambassador Sedan 360
1973 Hornet X 360
1973 Javelin AMC 401
1975 Sportabout X 258
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SC397 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote SC397 Quote  Post ReplyReply Direct Link To This Post Posted: May/17/2018 at 12:22pm
They are all listed here:
http://rebsamcandjeep.proboards.com/thread/585/amc-290-401-flywheels-flexplates
The 304 -727/904 Flex Plates had 2 different types of weights, a curved one and one with a 1"x 2 3/4" rectangular pad welded on.
The 360-727 had a 1"x 3 1/8" pad welded on it.
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keiths 70 AMX View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote keiths 70 AMX Quote  Post ReplyReply Direct Link To This Post Posted: Oct/20/2018 at 3:01pm
I have 1970 AMX with a 360 and the M-B11 trans. Some how 1 of the 3 bolts for the torque converter to bolt to the flexplate broke, leaving some of the bolt in the torque converter. I found this chasing a vibration. I am going to pull apart and try to remove the busted bolt from the tc. Problem is the bolt hole in the flexplate has been elongated and I wouldn't want to trust just replacing the bolt. Am I understanding what I have read here that even if I only replace the flexplate and reuse the tc, I have to have the new flexplate and crank rebalanced as an assembly? Please tell me I am wrong and can just replace the fp. I will be replacing all 3 bolts and spacers to the torqconverter.

1970 360 AMX
1980 Spirit DL
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SC397 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote SC397 Quote  Post ReplyReply Direct Link To This Post Posted: Oct/20/2018 at 3:38pm
I would weld the half a hole shut and make it round again with a die grinder.
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keiths 70 AMX View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote keiths 70 AMX Quote  Post ReplyReply Direct Link To This Post Posted: Oct/21/2018 at 6:46am
 Didn't think of that option, Thank You SC397.
1970 360 AMX
1980 Spirit DL
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Wagon Nut View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Wagon Nut Quote  Post ReplyReply Direct Link To This Post Posted: Feb/19/2019 at 2:31pm
I see that most of the info here pertains to late 60’s forward. I was hoping to get info, recommendations on finding a flexplate for an early 60’s 327. Will be bolted up to a stock 59 trans with torque tube.
Thanks for the help.
Benjamin
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SC397 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote SC397 Quote  Post ReplyReply Direct Link To This Post Posted: Jul/30/2019 at 1:02pm
I added a picture of the TH400 crank bushing to this post with some info.  It is a Jeep thing but if you are transplanting a AMCJeep engine which was mated to a TH400 in to a car with a 727 you need to know this.
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matty 401 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote matty 401 Quote  Post ReplyReply Direct Link To This Post Posted: Jul/30/2019 at 1:19pm
so if the 360 and 401 have the same weight  can you inter change them 
72 matador 401 the beast
79 concord 2 door
72 matador 304 grasshopper
68 Rogue 406
93 Cherokee 4.0 5 speed

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SC397 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote SC397 Quote  Post ReplyReply Direct Link To This Post Posted: Jul/30/2019 at 1:31pm
You can't or, shouldn't, inter change any of them .  Each engine was balanced individually with the vibration damper and flywheel/Flex plate mounted to the rotating assembly.
Normally the 360 and 401 does not have the same weight. 

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