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Will 304 mate up to a 4-Speed |
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Shannock
AMC Nut Joined: May/23/2016 Location: Rhode Island Status: Offline Points: 412 |
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Posted: Mar/19/2017 at 10:31am |
Hi guys, I have a 72 Javelin with the 401 and 4-speed. I want to take the 401 engine out and rebuild it. In the meantime, I have a good 304 engine I would like to drop in. Does anyone know if the 304 will mate up with the 4-speed. Thanks for your help, Tom
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1970390amx
AMC Addicted Joined: Jul/11/2008 Location: colorado Status: Offline Points: 3314 |
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It should bolt right in. You will need the correct flywheel for the 304.
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1970 390 4speed Bittersweet shadow mask AMX
1970 Amx missing most everything, or in a box |
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purple72Gremlin
AMC Addicted Charter Member Joined: Jul/01/2007 Location: Illinois Status: Offline Points: 16614 |
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Shannock
AMC Nut Joined: May/23/2016 Location: Rhode Island Status: Offline Points: 412 |
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Thanks for the info guys.
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BBO390
AMC Apprentice Joined: Dec/18/2012 Location: PA Status: Offline Points: 157 |
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Also a pilot bushing for the standard transmission.
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69 BBO AMX 390 auto 1968 Rogue V8 68 AMX 343 AT 52A Project
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DaemonForce
AMC Addicted Joined: Jul/05/2012 Location: Olympia, WA Status: Offline Points: 1070 |
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Takes a pilot bushing for the only optioned automatic too. Whether you know it or not, there's always options here. 304/360 are kind of a married platform where the flexplate/flywheel can be swapped with one another. 401 is a completely different beast. Does your 304 still have its factory flywheel?
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purple72Gremlin
AMC Addicted Charter Member Joined: Jul/01/2007 Location: Illinois Status: Offline Points: 16614 |
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purple72Gremlin
AMC Addicted Charter Member Joined: Jul/01/2007 Location: Illinois Status: Offline Points: 16614 |
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Just so its understood................. every engine (V8) uses a displacement specific flywheel/ flexplate. meaning 304 uses a 304 specific one 360 uses another.. ETC.........................................
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DaemonForce
AMC Addicted Joined: Jul/05/2012 Location: Olympia, WA Status: Offline Points: 1070 |
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Am I in some sort of universe where I'm only encountering Gen III stuff that is built wrong? I must have missed something somewhere because that seems to be the case if you can confirm something that doesn't work. |
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farna
Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19692 |
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The BW autos usually have a pilot bushing for centering the converter. Don't know about the TF stuff. They may use a thin bushing as well.
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Frank Swygert
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