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General Discussion => Q & A => Topic started by: nail lark on December 02, 2015, 10:29:11 AM

Title: 401 flywheel
Post by: nail lark on December 02, 2015, 10:29:11 AM

HI I am looking for a flywheel for my GS so I can put back to 3 spd standard . On another note, I have all the linkage but the adjustable lower push rod. Can someone tell me how long it is and what size of thread it is going into the clevis. 

Title: Re: 401 flywheel
Post by: Mark Ascher on December 02, 2015, 12:21:38 PM

Morrie,


Flywheel can be had from TA Performance in AZ.
I can check out the lower push rod later if someone doesn't post first.

Mark

Title: Re: 401 flywheel
Post by: nail lark on December 02, 2015, 12:49:20 PM

Thanks Mark ;I checked TA's web they don't list a flywheel . I'll have to call I guess. I was also wondering if the push rod is hardened. I read some place that someone tried to straighten one and it broke. That makes me think that it could be hardened . 

Title: Re: 401 flywheel
Post by: Mark Ascher on December 02, 2015, 12:54:01 PM

Morrie,

It's there - look under "Products" - "rotating assembly" - "flex plates and flywheels" - "billet flywheels" - TA_2037.

Don't know if that piece is hardened.

Mark

Title: Re: 401 flywheel
Post by: WkillGS on December 02, 2015, 01:38:58 PM

Yes, I found out the rod from pedal linkage to z-bar can break if you try to bend it. :BangHead:
Likely hardened to keep the bends in it from changing with use.

Don't know about the threaded rod. It's straight so it may not be hardened. I think it's 3/8"-24.

Congrats on finding the parts!

There's a NOS flywheel on eBay. Expensive.... $699 Expensive.
http://www.ebay.com/itm/360943697444?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT (http://www.ebay.com/itm/360943697444?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT)

Repo from Bendstens, $345:
http://www.ebay.com/itm/364-401-425-Buick-nailhead-flywheel-/191560208497?hash=item2c99e0d071:g:D9gAAOSwnDxUg3tm&vxp=mtr (http://www.ebay.com/itm/364-401-425-Buick-nailhead-flywheel-/191560208497?hash=item2c99e0d071:g:D9gAAOSwnDxUg3tm&vxp=mtr)

Title: Re: 401 flywheel
Post by: Brian on December 02, 2015, 02:29:25 PM

The lower push rod is definitely 3/8"-24 threads.  You can make one by starting with a grade-8,  3/8-24 bolt, cut the head off, then weld the clevis on in place of the head.  Weld a grade-8 nut onto the other clevis for it to screw into.  If you do it right, you won't be able to tell it from an original!

Title: Re: 401 flywheel
Post by: nail lark on December 02, 2015, 06:41:30 PM

I found a flywheel thanks to Mark. That's kind what I had in mind for the push rod.
  Thanks for the tips. Morrie

Title: Re: 401 flywheel
Post by: nail lark on December 02, 2015, 08:28:14 PM

Any idea how long the push rod should be? How long should the clevis's should be.

Title: Re: 401 flywheel
Post by: schlepcar on December 02, 2015, 09:23:45 PM

Quote from: nail lark on December 02, 2015, 08:28:14 PM

Any idea how long the push rod should be? How long should the clevis's should be.

Send me a PM...I think I have some extra linkage pieces. Maybe enough to make that Clevis and end correct. We may be able to duplicate my original with the extra stuff I have,Dan

Title: Re: 401 flywheel
Post by: nail lark on December 02, 2015, 10:56:12 PM

I am looking at a 66 Service manual. The linkage looks like the upper end is a threaded pipe with a clevis welded to it and the bottom is a fully threaded bolt   with a clevis welded to the end of it.
 

Title: Re: 401 flywheel
Post by: schlepcar on December 03, 2015, 11:10:08 AM

I found this broken one. I think if you found a piece of 3/8 hardened threaded rod,you can re-use it,Dan

Title: Re: 401 flywheel
Post by: nail lark on December 03, 2015, 11:55:40 AM

Thanks That's what I thought it looked like. I can thread a Grade 8 bolt.

Title: Re: 401 flywheel
Post by: telriv on December 13, 2015, 06:30:47 AM

When you heat by welding anything hardened it has to be re-hardened.