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Old 03-18-2009, 10:28 PM
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badaboom badaboom is offline
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Info on 401 numbers ?

Checked out a nice virgin 401 core today very little if any lip edge in the cylinders 4.165 std bore(gottcha)? - included, connecting rods pistons. timing cover, oil pan, valve covers and all bolts heads complete. pretty much everything except harmonic balancer- short block was asking 550 . Can anybody provide me info regarding the following numbers

crank 32204 (any gottchas regarding for a manual or auto transmission)?
block 3198951

Thanks
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Last edited by badaboom : 03-19-2009 at 10:57 AM.
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Old 03-19-2009, 08:42 AM
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HARDCORE pacer HARDCORE pacer is offline
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the cranks on the 401 are the same from auto to manual. The difference lies in the production year. up to 72 they were not compatible with the 727/904 trannies from 72 on they are all the same. The difference is in the way the end of the crank is machined. The pre 72 cranks are OK with any of the std trannies.
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Old 03-19-2009, 08:46 AM
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You sure you don't have an extra zero in your bore measurements? A standard 401 bore is 4.165" diam.
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Old 03-19-2009, 10:58 AM
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badaboom badaboom is offline
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401 in the making ????

Bore gotcha right 4.165 my mistake offered 400.00 see what happs.
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Old 03-19-2009, 12:19 PM
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Anyone have a photo of that difference? I have a 401 I'm tearing down and don't know what year it's crank is from.
Quote:
Originally Posted by HARDCORE pacer
the cranks on the 401 are the same from auto to manual. The difference lies in the production year. up to 72 they were not compatible with the 727/904 trannies from 72 on they are all the same. The difference is in the way the end of the crank is machined. The pre 72 cranks are OK with any of the std trannies.
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Old 03-19-2009, 12:52 PM
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If you have a late model flexplate laying around just see if it matchs up iwth the flange bolt pattern.
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Old 03-19-2009, 12:56 PM
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Quote:
Originally Posted by Elliott
If you have a late model flexplate laying around just see if it matchs up iwth the flange bolt pattern.
I don't have one but I'm looking for a 401 flext plate for this engine to run in front of my 727...
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