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Flex Plate ID

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Brootal View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brootal Quote  Post ReplyReply Direct Link To This Post Posted: Aug/22/2010 at 10:21am
How about a 360 to TH400?
 
Please? :)
 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bobtdms Quote  Post ReplyReply Direct Link To This Post Posted: Sep/16/2010 at 9:40pm
  If the 304/360  flexplates at Napa, autozone.....ect  all have the same part number and weights, which engine is it more closely balanced for? Or are they the same?  If it would cause a vibration issue, how bad would it be?
(For stock 72' 360)  
  Just wondering if anyone has had any luck with them.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote poormansMACHINE Quote  Post ReplyReply Direct Link To This Post Posted: Sep/16/2010 at 9:44pm
By the looks of the one's I've seen, it's the 304 plate.
Not sure offhand on the weight difference. If you have your old weight, then just transfer it over.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mopar63 Quote  Post ReplyReply Direct Link To This Post Posted: Oct/27/2010 at 5:49pm
any one have a pic of a '69 390 Flexplate ?, or is it the same as a '70?, or is it same as 343 with the weight welded on to it, if so can anyone give me the weight's weight and position ,I am taking out my 390 soon to fix the vibration which I'm sure is due to a 343 flexplate fitted,cheers
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PHAT69AMX Quote  Post ReplyReply Direct Link To This Post Posted: Oct/27/2010 at 7:21pm
amxstv - with (6) converter mtg holes, would guess it's a BW 290 Flexplate ?
 
pmm - mrblatzman's, from weight size, looks like a BW 401 Flexplate in your 1st post ?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 1750mopar Quote  Post ReplyReply Direct Link To This Post Posted: Oct/27/2010 at 9:34pm
Bought the Autozone flex plate. Did'nt realize until now the 304/360 listed the same part number. Anyway , had my flywheel matched to it by a speed shop. Still has a vibration on take off. Smooths out after that. Still this is not good on the engine. I have it on a 72 360. I am guessing it may or may not be correct for the 304 either. Have searched for 321 2653 for years with no luck. AMC parts book says 73/74 360. Have one more flywheel that a lot of AMC'ERS say is correct for a 360. Will try again. If this does'nt work will decide on either buying a car with a 360 automatic and have that flywheel checked for the counter weight, or remove crank and one piston and rod and having it all balanced. I really would like to keep it a 4 speed. If you can get a known 360 flexplate a speed shop can match the balance.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote poormansMACHINE Quote  Post ReplyReply Direct Link To This Post Posted: Oct/27/2010 at 9:49pm
Will it vibrate in neutral?
If not, maybe it[s a driveshaft angle or tail bushing in the trans.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mopar63 Quote  Post ReplyReply Direct Link To This Post Posted: Oct/28/2010 at 4:03am
yep it vibrates in neutral,car was originally a 343 but a 390 has been swapped before I bought it, just need to know if the 69 390 plate is the same as a '70 on the pic in page one of this thread or if not what size weight and placement on the 343 flexplate??
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PHAT69AMX Quote  Post ReplyReply Direct Link To This Post Posted: Oct/28/2010 at 6:23am
1969 343 Flexplate I have has no weight on it, only balancing holes.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mopar63 Quote  Post ReplyReply Direct Link To This Post Posted: Dec/16/2010 at 3:21am
pulled the 390 and found it had the correct flexplate , though full of cracks!, it has the wrong balabcer, a  343 one instead of a 390, probably where the vibration is coming from,never mind  Ive got a good 343 to go in the car for now , the 390 has other issues so it's new owner is going rebuild it



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