Home » Public Forums » GMCnet » [GMCnet] Final Drive Ratios
| [GMCnet] Final Drive Ratios [message #124375] |
Tue, 03 May 2011 11:40  |
Ray Erspamer
Messages: 1707
Registered: May 2007
Location: Milwaukee Wisconsin
Karma: -3
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Senior Member |
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Just curious, what is the lowest ratio available for our final drives?
My PO has it in his records that in Nov 1993 he installed a 3:21 and then in
July 94 he installed a 3:46.
Ray
Ray & Lisa Erspamer
78 Royale "Great Lakes Eagle"
Center Kitchen TZE368V101144
Wauwatosa, Wisconsin 53226
Email: 78GMC-Royale@att.net
414-745-3188
Web Site: http://ray-lisa.page.tl/
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Ray Erspamer
78 GMC Royale Center Kitchen
403, 3.70 Final Drive
Holley Sniper Quadrajet EFI System,
Holley Hyperspark Ignition System
414-484-9431
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| Re: [GMCnet] Final Drive Ratios [message #124378 is a reply to message #124375] |
Tue, 03 May 2011 12:31  |
George Beckman
Messages: 1085
Registered: October 2008
Location: Colfax, CA
Karma: 11
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| Ray Erspamer wrote on Tue, 03 May 2011 09:40 |
Just curious, what is the lowest ratio available for our final drives?
My PO has it in his records that in Nov 1993 he installed a 3:21 and then in
July 94 he installed a 3:46.
Ray
Ray & Lisa Erspamer
78 Royale "Great Lakes Eagle"
|
I believe there is also a 4.10, but those are really low gears.
'74 Eleganza, SE, Howell + EBL
Best Wishes,
George
[Updated on: Tue, 03 May 2011 12:33] Report message to a moderator |
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| Re: [GMCnet] Final Drive Ratios [message #124384 is a reply to message #124378] |
Tue, 03 May 2011 12:57 |
Ray Erspamer
Messages: 1707
Registered: May 2007
Location: Milwaukee Wisconsin
Karma: -3
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Senior Member |
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My 245/75R16 tiles change my 3:46 ratio to an approx 3:23. With a 4:11 I
would end up at approx 3:82.
I'm just thinking ahead in case I ever want to tow a vehicle.
Ray
Ray & Lisa Erspamer
78 Royale "Great Lakes Eagle"
Center Kitchen TZE368V101144
Wauwatosa, Wisconsin 53226
Email: 78GMC-Royale@att.net
414-745-3188
Web Site: http://ray-lisa.page.tl/
________________________________
From: George Beckman <gbeckman@pggp.com>
To: gmclist@temp.gmcnet.org
Sent: Tue, May 3, 2011 12:31:17 PM
Subject: Re: [GMCnet] Final Drive Ratios
Ray Erspamer wrote on Tue, 03 May 2011 09:40
> Just curious, what is the lowest ratio available for our final drives?
>
> My PO has it in his records that in Nov 1993 he installed a 3:21 and then in
> July 94 he installed a 3:46.
>
>
> Ray
>
>
> Ray & Lisa Erspamer
> 78 Royale "Great Lakes Eagle"
I believe there is also a 4.11, but those are really low gears.
--
'74 Eleganza, SE, Howell + EBL
Best Wishes,
George
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Ray Erspamer
78 GMC Royale Center Kitchen
403, 3.70 Final Drive
Holley Sniper Quadrajet EFI System,
Holley Hyperspark Ignition System
414-484-9431
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| Re: [GMCnet] Final Drive Ratios [message #124388 is a reply to message #124377] |
Tue, 03 May 2011 13:15 |
Don A
Messages: 895
Registered: October 2008
Location: Dallas, TX
Karma: 0
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Senior Member |
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Gene,
shouldn't your list be updates to include Jim K's 3.50, 3.8 and 4.10
Don Adams Dallas, TX
'76 26' Glenbrook, '90 Sidekick
rebuilt by R Archer, powered by J Bounds, Koba
[IMG]http://www.gmcmhphotos.com/photos/data/6109/G2.jpg[/IMG]
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| Re: [GMCnet] Final Drive Ratios [message #124397 is a reply to message #124375] |
Tue, 03 May 2011 13:35 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Ray,
If you have the 3.46 in there now, you are in the ball park.
Yes we sell 3.55/3.70/4.10 units, but unless your a slow driver or
pulling 4,000lbs, there is no need to change.
I know the people that have the 403engines have great experience with
the 3.70,but the gain will not be worth the investment.
We are in the business to sell, but I prefer not to sell you something
that will not show improvement.
On Tue, May 3, 2011 at 9:40 AM, Ray Erspamer <78gmc-royale@att.net> wrote:
> Just curious, what is the lowest ratio available for our final drives?
>
> My PO has it in his records that in Nov 1993 he installed a 3:21 and then in
> July 94 he installed a 3:46.
>
>
> Â Ray
>
>
> Ray & Lisa Erspamer
> 78 Royale "Great Lakes Eagle"
> Center Kitchen  TZE368V101144
> Wauwatosa, Wisconsin 53226
> Email: 78GMC-Royale@att.net
> 414-745-3188
> Web Site: http://ray-lisa.page.tl/
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List 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
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] Final Drive Ratios [message #124404 is a reply to message #124397] |
Tue, 03 May 2011 13:53 |
Ray Erspamer
Messages: 1707
Registered: May 2007
Location: Milwaukee Wisconsin
Karma: -3
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Senior Member |
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Thanks Jim, your honesty is one of the many items that makes you such an asset
to this group.
My concern was having a 3:46 with the 245/75R16 tires which actually changes my
3:46 to a 3:23 (approx). I would only consider changing if I were to tow a
car. Towing the trailer with the Harley in it has not been a problem.
Thanks
Ray
Ray & Lisa Erspamer
78 Royale "Great Lakes Eagle"
Center Kitchen TZE368V101144
Wauwatosa, Wisconsin 53226
Email: 78GMC-Royale@att.net
414-745-3188
Web Site: http://ray-lisa.page.tl/
________________________________
From: Jim Kanomata <jimkanomata@gmail.com>
To: gmclist@temp.gmcnet.org
Sent: Tue, May 3, 2011 1:35:32 PM
Subject: Re: [GMCnet] Final Drive Ratios
Ray,
If you have the 3.46 in there now, you are in the ball park.
Yes we sell 3.55/3.70/4.10 units, but unless your a slow driver or
pulling 4,000lbs, there is no need to change.
I know the people that have the 403engines have great experience with
the 3.70,but the gain will not be worth the investment.
We are in the business to sell, but I prefer not to sell you something
that will not show improvement.
On Tue, May 3, 2011 at 9:40 AM, Ray Erspamer <78gmc-royale@att.net> wrote:
> Just curious, what is the lowest ratio available for our final drives?
>
> My PO has it in his records that in Nov 1993 he installed a 3:21 and then in
> July 94 he installed a 3:46.
>
>
> Ray
>
>
> Ray & Lisa Erspamer
> 78 Royale "Great Lakes Eagle"
> Center Kitchen TZE368V101144
> Wauwatosa, Wisconsin 53226
> Email: 78GMC-Royale@att.net
> 414-745-3188
> Web Site: http://ray-lisa.page.tl/
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List 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
_______________________________________________
GMCnet mailing list
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http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Ray Erspamer
78 GMC Royale Center Kitchen
403, 3.70 Final Drive
Holley Sniper Quadrajet EFI System,
Holley Hyperspark Ignition System
414-484-9431
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| Re: [GMCnet] Final Drive Ratios [message #124440 is a reply to message #124430] |
Tue, 03 May 2011 15:49 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Dan,
You are one of 1,000 that has told me of the gain.
I know Miguil at MGM GMC is always telling people that it is the best ratio.
We fall back on over 2,000 units running.
Currenty, we sell considerably more 3.70 than the 3.55.
We have the best warrenty program that cover labor, freight and parts
no charge for 5 years and no limit on milage.
On Tue, MayApplied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] Final Drive Ratios [message #124444 is a reply to message #124440] |
Tue, 03 May 2011 15:59 |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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Senior Member |
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Jim,
I really like the 3.70 limited slip I got from you. Since I installed it in January, I have put just over 1,000 miles on it and changed the gear oil (while it was hot) after our last trip. Big improvement in drivability. It is one of the best improvements I have made on the coach to date. I'm still saving for the disc brakes and reaction arm, but I'll be ordering that system one of these days.
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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