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Will 304 mate up to a 4-Speed

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Shannock View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Shannock Quote  Post ReplyReply Direct Link To This Post Topic: Will 304 mate up to a 4-Speed
    Posted: Mar/19/2017 at 11:31am
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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Post Options Post Options   Thanks (0) Thanks(0)   Quote 1970390amx Quote  Post ReplyReply Direct Link To This Post Posted: Mar/19/2017 at 11:55am
It should bolt right in.  You will need the correct flywheel for the 304.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote purple72Gremlin Quote  Post ReplyReply Direct Link To This Post Posted: Mar/19/2017 at 1:29pm
Originally posted by 1970390amx 1970390amx wrote:

It should bolt right in.  You will need the correct flywheel for the 304.
Yep. ----Dont use the 401 flywheel.............
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Shannock Quote  Post ReplyReply Direct Link To This Post Posted: Mar/19/2017 at 7:23pm
Thanks for the info guys. Thumbs Up
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Post Options Post Options   Thanks (0) Thanks(0)   Quote BBO390 Quote  Post ReplyReply Direct Link To This Post Posted: Mar/19/2017 at 7:30pm
Also a pilot bushing for the standard transmission.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote DaemonForce Quote  Post ReplyReply Direct Link To This Post Posted: Mar/19/2017 at 8:02pm
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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Post Options Post Options   Thanks (0) Thanks(0)   Quote purple72Gremlin Quote  Post ReplyReply Direct Link To This Post Posted: Mar/19/2017 at 8:51pm
Originally posted by DaemonForce DaemonForce wrote:

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?
You are so wrong.  304/360 do NOT use the same flywheel.  I found that out.   the only transmission that uses a bushing in the crank is the TH400.   None of the others use a bushing of any kind.  (The 250/287/327 Rambler engines are not part of this question so they dont apply)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote purple72Gremlin Quote  Post ReplyReply Direct Link To This Post Posted: Mar/19/2017 at 8:53pm
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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Post Options Post Options   Thanks (0) Thanks(0)   Quote DaemonForce Quote  Post ReplyReply Direct Link To This Post Posted: Mar/20/2017 at 12:17am
Originally posted by purple72Gremlin purple72Gremlin wrote:

You are so wrong.  304/360 do NOT use the same flywheel.  I found that out.   the only transmission that uses a bushing in the crank is the TH400.   None of the others use a bushing of any kind.  (The 250/287/327 Rambler engines are not part of this question so they dont apply)

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. Ermm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote farna Quote  Post ReplyReply Direct Link To This Post Posted: Mar/20/2017 at 7:27am
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.
Frank Swygert
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