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Fly wheels
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sasyamx View Drop Down
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Joined: Jul/24/2007
Location: Kentucky
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Points: 216 		Post Options Post Options   Thanks (0) Thanks(0)   Quote sasyamx Quote  Post ReplyReply Direct Link To This Post Topic: Fly wheels
    Posted: May/24/2012 at 1:32am
Will a 72&up 401  flywheel fit a 71 401's crank, early 71 .
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amx39068 View Drop Down
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Joined: Feb/21/2008
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Points: 10241 		Post Options Post Options   Thanks (0) Thanks(0)   Quote amx39068 Quote  Post ReplyReply Direct Link To This Post Posted: May/24/2012 at 1:51am
No. The differnces are well documented here on the forum,
Dan Curtis, AZ AMC collector quality Restorations, Parts & Engines - amcmusclecars.com
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FuzzFace2 View Drop Down
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Points: 6525 		Post Options Post Options   Thanks (0) Thanks(0)   Quote FuzzFace2 Quote  Post ReplyReply Direct Link To This Post Posted: May/24/2012 at 12:40pm
2 different cranks up to 71 had a flat crank and took a FW to fit it. 72 on up had a step crank and took a flanged FW ti fit it.
You are right it needs to be a 401 FW for a 401not a 360 FW for a 401 motor.
Dave ----


Edited by FuzzFace2 - May/24/2012 at 12:41pm
75 GremlinX v8

76 GremlinX i6 (sons)

70 Javelin SST 390/4sp (360/5sp now)

70 Javelin 1/4 Drag car 360/auto
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amx39068 View Drop Down
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Points: 10241 		Post Options Post Options   Thanks (0) Thanks(0)   Quote amx39068 Quote  Post ReplyReply Direct Link To This Post Posted: May/24/2012 at 12:49pm
YOu can use any flywheel with the same flange opening as a 72 crank as long as you have it match balanced to an original 401 flywheel for an externally balanced engine.
Dan Curtis, AZ AMC collector quality Restorations, Parts & Engines - amcmusclecars.com
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carnuck View Drop Down
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Points: 1459 		Post Options Post Options   Thanks (0) Thanks(0)   Quote carnuck Quote  Post ReplyReply Direct Link To This Post Posted: May/24/2012 at 2:44pm
Someone posted brand new flywheels for the older 401s for sale. (I'll be getting one and re-balancing it for my 290 once I sell my '03 E250)
Pics http://tinyurl.com/jimsclads
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