| Re: [GMCnet] Final Drive Suckiness [message #80164] |
Sun, 11 April 2010 13:36  |
kenneth hugelier
Messages: 89
Registered: August 2008
Karma: 0
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Jim,
So you are saying that the 3:42 FD has spider gears like the 3:07? And the 3:21 ratio FD is a totally different animal?
If that is the case, I don't need a picture as I am familiar with the spider gear system, but planetary gears in a FD are really different.
ken hugelier
77 PB
Det. Mich.
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| Re: [GMCnet] Final Drive Suckiness [message #80263 is a reply to message #80164] |
Sun, 11 April 2010 22:05  |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
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The 3.21 is a 8 bolt case, 3.42 is a 10 bolt case.
On Sun, Apr 11, 2010 at 11:36 AM, ken hugelier <kahugelier@sbcglobal.net> wrote:
> Jim,
> Â Â Â Â So you are saying that the 3:42 FD has spider gears like the 3:07? And the 3:21 ratio FD is a totally different animal?
> If that is the case, I don't need a picture as I am familiar with the spider gear system, but planetary gears in a FD are really different.
>
>
> ken hugelier
> 77 PB
> Det. Mich.
> _______________________________________________
> GMCnet mailing list
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--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
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jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] Final Drive Suckiness [message #80314 is a reply to message #80164] |
Mon, 12 April 2010 13:01 |
Chr$
Messages: 2690
Registered: January 2004
Location: Scottsdale, AZ
Karma: 1
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Jim, I have a 10 bolt case, and I was told by folks here it is a 3.21.
Manny says the 3.21 doesn't have a vent.
Regarding my FD:
It has a vent
It has a check valve on the LH flange
It has a shaft that is apparently the same as a 3.21 since Manny sent me a shaft for a 3.21 and it fits.
It came off of a 67 Eldo. Tranny was 67AF.
Sooo.... what do I have then?
-Chr$: Perpetual SmartAss
Scottsdale, AZ
77 Ex-Kingsley 455 SOLD!
2010 Nomad 24 Ft TT 390W PV W/MPPT, EV4010 and custom cargo door.
Photosite: Chrisc GMC:"It has Begun" TT: "The Other Woman"
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| Re: [GMCnet] Final Drive Suckiness [message #80328 is a reply to message #80314] |
Mon, 12 April 2010 14:24 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
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Chris,
Here's a group of pictures published by Larry W.
http://www.gmcmhphotos.com/photos/showphoto.php?photo=16025
I will send you a copy of the 3.21 FD manual off line.
Regards,
Rob Mueller
Sydney, Australia
AUS '75 Avion-The Blue Streak TZE365V100428
USA '75 Avion-Double Trouble TZE365V100426
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Chris Choffat
Sent: Tuesday, 13 April 2010 4:02 AM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Final Drive Suckiness
Jim, I have a 10 bolt case, and I was told by folks here it is a 3.21.
Manny says the 3.21 doesn't have a vent.
Regarding my FD:
It has a vent
It has a check valve on the LH flange
It has a shaft that is apparently the same as a 3.21 since Manny sent me a
shaft for a 3.21 and it fits.
It came off of a 67 Eldo. Tranny was 67AF.
Sooo.... what do I have then?
--
-Chr$: Perpetual SmartAss
77 Ex-Kingsley 455, Power Drive, 3:21 FD U S S Kobiashi Maru (with leaky
Warp Drive Nacelle): The Engineer's Motorhome
Scottsdale, AZ
Photosite: Chrisc "It has Begun"
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] Final Drive Suckiness [message #80335 is a reply to message #80314] |
Mon, 12 April 2010 15:35 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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You got me on this.
Maybe some how there is a special spider gear in the right side that
takes the 3.21 shaft.
On Mon, Apr 12, 2010 at 11:01 AM, Chris Choffat <cchoffataz@yahoo.com> wrote:
>
>
> Jim, I have a 10 bolt case, and I was told by folks here it is a 3.21.
>
> Manny says the 3.21 doesn't have a vent.
> Regarding my FD:
>
> It has a vent
> It has a check valve on the LH flange
> It has a shaft that is apparently the same as a 3.21 since Manny sent me a shaft for a 3.21 and it fits.
> It came off of a 67 Eldo. Tranny was 67AF.
>
> Sooo.... what do I have then?
> --
> -Chr$: Perpetual SmartAss
> 77 Ex-Kingsley 455, Power Drive, 3:21 FD Â U S S Â Kobiashi Maru (with leaky Warp Drive Nacelle): The Engineer's Motorhome
> Scottsdale, AZ
> Photosite: Chrisc "It has Begun"
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
_______________________________________________
GMCnet mailing list
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http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] Final Drive Suckiness [message #80384 is a reply to message #80314] |
Mon, 12 April 2010 20:27 |
roy1
Messages: 2126
Registered: July 2004
Location: Minden nevada
Karma: 6
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Senior Member |
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Chris:
When you had the cover off all you need to do is divide the teeth on the ring gear by the teeth on the pinion gear . the result is the gear ratio.
Roy
Roy Keen
Minden,NV
76 X Glenbrook
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