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AMC 401 tranny |
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Vezzzzzzz 
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Joined: Jun/01/2014 Location: TX Status: Offline Points: 53 |
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 Topic: AMC 401 trannyPosted: Jul/18/2014 at 9:12pm |
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How many different trannys will mount to a 1974 401?
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Jeffry
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purple72Gremlin
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Charter Member Joined: Jul/01/2007 Location: Illinois Status: Offline Points: 16614 |
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Posted: Jul/18/2014 at 9:40pm |
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AMC bellhousing ones.
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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: Jul/19/2014 at 9:18am |
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Automatics AMC pattern 2wd&4wd 904's,998's,999's & 727's & whatever the designation number is of the Grand Cherokee Chrysler Electronic 4spd auto is AMC 4wd TH400's (can be converted to 2wd) AMC pattern 2wd & 4wd AW4 4spd auto (actually a very good 4spd auto) Manual Trans whatever will fit the bellhousing, AMC T-10's Ford Top Loaders T-5's (may go boom behind a 401) Quick Time bells can fit GM transmissions and others
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carnuck
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Joined: Mar/31/2010 Location: Seattle Status: Offline Points: 3942 |
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Posted: Jul/23/2014 at 1:53am |
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All '72 up AMC pattern trans.
Bolt up: 904, 998, 999, 42RE Handle the power: TH400, 727 and AW4 AMC Borg Warner M12? auto (need a custom flexplate and crank adapter) from a '72 - '75 Postal Jeep A518 and A618 with a Bulltear adapter. http://www.bulltear.com/forums/archive/index.php/t-15945.html I had one with an Allison 540AT in Canada in a Motorhome Chassis that I swapped the bell on it for a Dodge one. I'm sorry I didn't keep that bell now. |
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Buzzman72
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Joined: Sep/15/2009 Location: Southern IN Status: Offline Points: 2725 |
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Posted: Jul/23/2014 at 10:19pm |
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I read the link regarding the "Bulltear adapter," but I never saw a word about them actually building it.
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Buzzman72...void where prohibited, your mileage may vary, objects in mirror may be closer than they appear, and alcohol may intensify any side effects.
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MARTINSR
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Joined: Sep/08/2009 Location: SF bay area Ca Status: Offline Points: 670 |
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Posted: Jul/24/2014 at 12:19am |
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I seem to remember that the Buick "Nailhead" (401-425) ST400 (TH400) was used in the AMC's. I know that tranny was used in everything from Aston Martins to Rolls Royces.
Brian
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1959 Rambler American daily driver. And I mean EVERY SINGLE day.
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Wrambler
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Joined: Jul/02/2007 Location: West Virginia Status: Offline Points: 4199 |
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Posted: Jul/24/2014 at 2:22pm |
Yes, with the handy dandy Nailhead trans to any engine kit. That's what kept that trans in production so long was its unique short bell design. You do have to watch out to be sure you get the correct stuff as it was used with other engines in the Jeeps too. You also need to be sure you get ALL of it. It's more than just the cast ring. |
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Wrambler
69 AMC Rambler 4.0L, 5 speed 2015 Grand Cherokee Limited 2019 Chrysler 300 |
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carnuck
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Joined: Mar/31/2010 Location: Seattle Status: Offline Points: 3942 |
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Posted: Jul/24/2014 at 3:21pm |
You would only need the nailhead version (with crank/bell adapters and balance matched flexplate) for a '71 304, 360 or 401 or Gen II motors which would then run the Ford style starter. The AMC cased TH400 won't work without a different adapter for the '71/older motors. I'm not sure the nailhead version's adapter would stand up long to a built 401. |
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MARTINSR wrote: