Home » Public Forums » GMCnet » 3.70 FD Install (Some data from the 3.70 FD test ride.)
| 3.70 FD Install [message #166137] |
Thu, 12 April 2012 13:37  |
George Zhookoff
Messages: 398
Registered: December 2004
Location: Snellville, GA
Karma: 6
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Senior Member |
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Well I finally got some time to test drive my 78 EL II, 403, 3.70 LS FD. The coach now has pick up and go. Step on the gas pedal and get pushed into the seat. Not like my vette but compared to what it was, it's good. The coach has guts driving down the road. Out on I-85 the gps shows 67 mph @ 3,000 rpm. 70 mph @ ~ 3,160 rpm. 225/75/16 mounted on Alcoa's.
It's a winner update!
Now the awesome Brake Reaction Arm System has something to do other than just sit there looking pretty!
George Zhookoff
78 EL II
Atlanta, Ga
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| Re: 3.70 FD Install [message #166147 is a reply to message #166137] |
Thu, 12 April 2012 15:29  |
PettyVTX
Messages: 363
Registered: April 2011
Location: Winder Ga.
Karma: 1
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Senior Member |
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Way to go George I wonder how the switch pitch would do with the 3.70? Hummm
Ex Avion now looking for a 23'
Jeep Wrangler Towd
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| Re: [GMCnet] 3.70 FD Install [message #166150 is a reply to message #166137] |
Thu, 12 April 2012 16:02 |
Ray Erspamer
Messages: 1707
Registered: May 2007
Location: Milwaukee Wisconsin
Karma: -3
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Senior Member |
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Same thing when we put in our 3:70 George, absolutely love it ! Vrooooommmmmm !
Ray
Ray & Lisa
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/
----- Original Message ----
From: George Zhookoff <George.Zhookoff@haskell.com>
To: gmclist@temp.gmcnet.org
Sent: Thu, April 12, 2012 1:37:48 PM
Subject: [GMCnet] 3.70 FD Install
Well I finally got some time to test drive my 78 EL II, 403, 3.70 LS FD. The
coach now has pick up and go. Step on the gas pedal and get pushed into the
seat. Not like my vette but compared to what it was, it's good. The coach has
guts driving down the road. Out on I-85 the gps shows 67 mph @ 3,000 rpm. 70
mph @ ~ 3,160 rpm. 225/75/16 mounted on Alcoa's.
It's a winner update!
Now the awesome Brake Reaction Arm System has something to do other than just
sit there looking pretty!
George Zhookoff
78 EL II
Atlanta, Ga
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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: 3.70 FD Install [message #166246 is a reply to message #166137] |
Fri, 13 April 2012 12:43 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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Senior Member |
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| George Zhookoff wrote on Thu, 12 April 2012 11:37 |
Well I finally got some time to test drive my 78 EL II, 403, 3.70 LS FD. The coach now has pick up and go. ...
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What was the cash outlay for the conversion?
IE: To change from a stock FD and stock ratio to the limited slip and 3.70 gears, how much would I need to budget? (For parts only.)
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: 3.70 FD Install [message #166247 is a reply to message #166246] |
Fri, 13 April 2012 12:51 |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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Senior Member |
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| Mike Miller wrote on Fri, 13 April 2012 10:43 |
| George Zhookoff wrote on Thu, 12 April 2012 11:37 |
Well I finally got some time to test drive my 78 EL II, 403, 3.70 LS FD. The coach now has pick up and go. ...
|
What was the cash outlay for the conversion?
IE: To change from a stock FD and stock ratio to the limited slip and 3.70 gears, how much would I need to budget? (For parts only.)
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Mike, look here: http://www.appliedgmc.com/level.itml/icOid/482
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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| Re: 3.70 FD Install [message #166249 is a reply to message #166247] |
Fri, 13 April 2012 13:03 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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Senior Member |
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| Carl S. wrote on Fri, 13 April 2012 10:51 |
| Mike Miller wrote on Fri, 13 April 2012 10:43 |
| George Zhookoff wrote on Thu, 12 April 2012 11:37 |
Well I finally got some time to test drive my 78 EL II, 403, 3.70 LS FD. The coach now has pick up and go. ...
|
What was the cash outlay for the conversion?
IE: To change from a stock FD and stock ratio to the limited slip and 3.70 gears, how much would I need to budget? (For parts only.)
|
Mike, look here: http://www.appliedgmc.com/level.itml/icOid/482
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I did before posting. The 3.70 change and the limited slip are listed separately, with core charges. As some of the rebuilt parts of one upgrade would not be needed due to the other upgrade, I am wondering if the price for getting both at once was cheaper than just ordering both upgrades. (Plus they would come altogether in one part... hopefully.)
I COULD just call and ask JimK, but I thought others might be interested.... plus I really do not like "bothering" Jim until I am ready to spend money. 
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: [GMCnet] 3.70 FD Install [message #166250 is a reply to message #166249] |
Fri, 13 April 2012 13:34 |
Ray Erspamer
Messages: 1707
Registered: May 2007
Location: Milwaukee Wisconsin
Karma: -3
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Senior Member |
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One key thing, whenever you change or service your final drive, ALWAYS REMEMBER
TO REFILL IT WITH LUBE !!!! OYE !!!!
Ray
Ray & Lisa
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/
----- Original Message ----
From: Mike Miller <m000035@gmail.com>
To: gmclist@temp.gmcnet.org
Sent: Fri, April 13, 2012 1:03:03 PM
Subject: Re: [GMCnet] 3.70 FD Install
Carl S. wrote on Fri, 13 April 2012 10:51
> Mike Miller wrote on Fri, 13 April 2012 10:43
> > George Zhookoff wrote on Thu, 12 April 2012 11:37
> > > Well I finally got some time to test drive my 78 EL II, 403, 3.70 LS FD.
>The coach now has pick up and go. ...
> >
> >
> > What was the cash outlay for the conversion?
> >
> > IE: To change from a stock FD and stock ratio to the limited slip and 3.70
>gears, how much would I need to budget? (For parts only.)
>
>
> Mike, look here: http://www.appliedgmc.com/level.itml/icOid/482
I did before posting. The 3.70 change and the limited slip are listed
separately, with core charges. As some of the rebuilt parts of one upgrade
would not be needed due to the other upgrade, I am wondering if the price for
getting both at once was cheaper than just ordering both upgrades. (Plus they
would come altogether in one part... hopefully.)
I COULD just call and ask JimK, but I thought others might be interested....
plus I really do not like "bothering" Jim until I am ready to spend money.
:roll:
--
Mike Miller -- Hillsboro, OR -- on the Black list
(#1)'73 26' exPainted D. -- (#2)`78 23' Birchaven Rear Bath -- (#3)`77 23'
Birchaven Side Bath
http://m000035.blogspot.com
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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GMCnet mailing list
Unsubscribe or Change List Options:
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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: 3.70 FD Install [message #166253 is a reply to message #166137] |
Fri, 13 April 2012 13:44 |
Chr$
Messages: 2690
Registered: January 2004
Location: Scottsdale, AZ
Karma: 1
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Senior Member |
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I'm pretty happy with the giddyup of my Powerdrive and 3:21 combo, just hate the high RPM's. I run about 3,000 RPM's at 70 as well.
-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] 3.70 FD Install [message #166256 is a reply to message #166252] |
Fri, 13 April 2012 14:01 |
Ray Erspamer
Messages: 1707
Registered: May 2007
Location: Milwaukee Wisconsin
Karma: -3
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Senior Member |
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My 3:46 that came with my coach performed very nice Mike, until I changed the
lube.....well, I did a 1/2 change....the draining part. 70 miles later it was
PARTS ! Made my decision to upgrade to a 3:70 very easy.
http://www.gmcmhphotos.com/photos/showgallery.php?cat=5832
Ray
Ray & Lisa
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/
----- Original Message ----
From: Mike Miller <m000035@gmail.com>
To: gmclist@temp.gmcnet.org
Sent: Fri, April 13, 2012 1:41:14 PM
Subject: Re: [GMCnet] 3.70 FD Install
Ray Erspamer wrote on Fri, 13 April 2012 11:34
> One key thing, whenever you change or service your final drive, ALWAYS REMEMBER
>
> TO REFILL IT WITH LUBE !!!! OYE !!!!
Sounds like someone with "experience."
(Or maybe I should say "Sounds like someone with "an experience.")
:twisted:
--
Mike Miller -- Hillsboro, OR -- on the Black list
(#1)'73 26' exPainted D. -- (#2)`78 23' Birchaven Rear Bath -- (#3)`77 23'
Birchaven Side Bath
http://m000035.blogspot.com
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
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] 3.70 FD Install [message #166287 is a reply to message #166256] |
Fri, 13 April 2012 21:12 |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
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Senior Member |
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| Ray Erspamer wrote on Fri, 13 April 2012 14:01 |
My 3:46 that came with my coach performed very nice Mike, until I changed the
lube.....well, I did a 1/2 change....the draining part. 70 miles later it was
PARTS ! Made my decision to upgrade to a 3:70 very easy.
http://www.gmcmhphotos.com/photos/showgallery.php?cat=5832
Ray
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Ray - it wasn't parts. It wasn't even good scrap.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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| Re: 3.70 FD Install [message #166292 is a reply to message #166249] |
Fri, 13 April 2012 22:23 |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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Senior Member |
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| Mike Miller wrote on Fri, 13 April 2012 11:03 |
| Carl S. wrote on Fri, 13 April 2012 10:51 |
| Mike Miller wrote on Fri, 13 April 2012 10:43 |
| George Zhookoff wrote on Thu, 12 April 2012 11:37 |
Well I finally got some time to test drive my 78 EL II, 403, 3.70 LS FD. The coach now has pick up and go. ...
|
What was the cash outlay for the conversion?
IE: To change from a stock FD and stock ratio to the limited slip and 3.70 gears, how much would I need to budget? (For parts only.)
|
Mike, look here: http://www.appliedgmc.com/level.itml/icOid/482
|
I did before posting. The 3.70 change and the limited slip are listed separately, with core charges. As some of the rebuilt parts of one upgrade would not be needed due to the other upgrade, I am wondering if the price for getting both at once was cheaper than just ordering both upgrades. (Plus they would come altogether in one part... hopefully.)
I COULD just call and ask JimK, but I thought others might be interested.... plus I really do not like "bothering" Jim until I am ready to spend money.
|
Mike, It has been about a year and a half since I did this, but if I remember correctly, the prices were pretty much the same as on the website. The final drive is assembled and the kit includes the speedo corrector. The limited slip carrier is extra and is simply substituted for an open carrier. The cost of the LS carrier is extra to the unit. I remember struggling with the price and biting the bullet to do it right the first time. The total cost was around $2,500.00 IIRC. Just take the FD cost and add the cost of the limited slip differential carrier, and you have it. Check with Jim to make sure.
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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| Re: [GMCnet] 3.70 FD Install [message #166306 is a reply to message #166287] |
Sat, 14 April 2012 08:05 |
Ray Erspamer
Messages: 1707
Registered: May 2007
Location: Milwaukee Wisconsin
Karma: -3
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Senior Member |
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I was going easy on myself Steve.....geez, just throw some rock salt on to my
wounds why don't ya ! LOL
Ray
Ray & Lisa
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/
----- Original Message ----
From: Steve Southworth <midlf@centurytel.net>
To: gmclist@temp.gmcnet.org
Sent: Fri, April 13, 2012 9:12:15 PM
Subject: Re: [GMCnet] 3.70 FD Install
Ray Erspamer wrote on Fri, 13 April 2012 14:01
> My 3:46 that came with my coach performed very nice Mike, until I changed the
> lube.....well, I did a 1/2 change....the draining part. 70 miles later it was
> PARTS ! Made my decision to upgrade to a 3:70 very easy.
>
> http://www.gmcmhphotos.com/photos/showgallery.php?cat=5832
>
> Ray
Ray - it wasn't parts. It wasn't even good scrap.
--
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
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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|
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| Re: [GMCnet] 3.70 FD Install [message #166343 is a reply to message #166306] |
Sat, 14 April 2012 19:55 |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
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Senior Member |
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| Ray Erspamer wrote on Sat, 14 April 2012 08:05 |
I was going easy on myself Steve.....geez, just throw some rock salt on to my
wounds why don't ya ! LOL
Ray
----- Original Message ----
From: Steve Southworth <midlf@centurytel.net>
Ray - it wasn't parts. It wasn't even good scrap.
--
Steve Southworth
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Oops - I forgot to follow that with "<GRIN>". <GRIN>
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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