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[GMCnet] motor and transmission removal [message #154672] Wed, 28 December 2011 15:51 Go to next message
Cameron Hong is currently offline  Cameron Hong   United States
Messages: 15
Registered: July 2009
Karma: 0
Junior Member
What is the best / easiest way to remove the motor and transmission

Bottom, top, front?

I have the space and the tools to take it out the front but I wanted to get
some suggestions on the steps for removal besides the obvious.

Is there any special bracing I should do?

Any help would be great

Thanks

Cameron

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Re: [GMCnet] motor and transmission removal [message #154681 is a reply to message #154672] Wed, 28 December 2011 17:05 Go to previous messageGo to next message
cameron is currently offline  cameron   United States
Messages: 10
Registered: December 2011
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Junior Member
Also here are the particulars
1976 Palm Beach
I have owned it for three years and on the last trip it started to have less power than usual and was burning a ton of oil.
That is when I decided it was time to tear the motor down and rebuild.
I usually drive up to Tahoe in July so I need to get things going.
Has anyone done direct injection using the Rockwell intake?
That is also something I am going to do on this rebuild.
Smog is the only hic up though.
Also planning on putting in positraction.
I have done engine rebuilds and replacements on other cares but I must admit that this is not as straight forward
Re: [GMCnet] motor and transmission removal [message #154683 is a reply to message #154672] Wed, 28 December 2011 17:15 Go to previous messageGo to next message
hnielsen2 is currently offline  hnielsen2   United States
Messages: 1434
Registered: February 2004
Location: Alpine CA
Karma: 0
Senior Member
Cameron;
Location?
I have a out the bottom hoist you are welcome to use.
Built like the GM factory hoist.
If you are local came and pick it.
If not I have it boxed up for shipping.
You pay for shipping out and back ZIP Code 91901
Howard
Alpine CA
26' Canyon Lands
Not Quite Stock.


----- Original Message -----
From: "Cameron Hong" <cameron.hong@comcast.net>
To: <gmclist@temp.gmcnet.org>
Sent: Wednesday, December 28, 2011 13:51
Subject: [GMCnet] motor and transmission removal


> What is the best / easiest way to remove the motor and transmission
>
> Bottom, top, front?
>
> I have the space and the tools to take it out the front but I wanted to
> get
> some suggestions on the steps for removal besides the obvious.
>
> Is there any special bracing I should do?
>
> Any help would be great
>
> Thanks
>
> Cameron
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

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All is well with my Lord
Re: [GMCnet] motor and transmission removal [message #154687 is a reply to message #154683] Wed, 28 December 2011 17:27 Go to previous messageGo to next message
cameron is currently offline  cameron   United States
Messages: 10
Registered: December 2011
Karma: 0
Junior Member
Thank you
I am in Castro Valley CA. just east of SF
So you recommend dropping out the bottom.
That looked like a good idea but how high do I need to jack the rig up?
I was looking around and one guy dug a 3' hole to get his out.
I was thinking that since I am removing the transmission and the engine the front would work but if dropping out the bottom is easier, then it sounds good to me.

[Updated on: Wed, 28 December 2011 17:28]

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Re: [GMCnet] motor and transmission removal [message #154688 is a reply to message #154681] Wed, 28 December 2011 17:28 Go to previous messageGo to next message
hnielsen2 is currently offline  hnielsen2   United States
Messages: 1434
Registered: February 2004
Location: Alpine CA
Karma: 0
Senior Member
Cameron;
California will not let you upgrade it FI.
Don't you just love it
Howard
Alpine CA

----- Original Message -----
From: "cameron" <cameron.hong@comcast.net>
To: <gmclist@temp.gmcnet.org>
Sent: Wednesday, December 28, 2011 15:05
Subject: Re: [GMCnet] motor and transmission removal


>
>
> Also here are the particulars
> 1976 Palm Beach
> I have owned it for three years and on the last trip it started to have
> less power than usual and was burning a ton of oil.
> That is when I decided it was time to tear the motor down and rebuild.
> I usually drive up to Tahoe in July so I need to get things going.
> Has anyone done direct injection using the Rockwell intake?
> That is also something I am going to do on this rebuild.
> Smog is the only hic up though. This the problm no F I upgrade
> Also planning on putting in positraction.
> I have done engine rebuilds and replacements on other cares but I must
> admit that this is not as straight forward
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

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All is well with my Lord
Re: [GMCnet] motor and transmission removal [message #154689 is a reply to message #154687] Wed, 28 December 2011 17:31 Go to previous messageGo to next message
hnielsen2 is currently offline  hnielsen2   United States
Messages: 1434
Registered: February 2004
Location: Alpine CA
Karma: 0
Senior Member
Cameron;
Ours was up on a hoist when we dropped the engine and drive unit.
Check out the GMC sites for information on how high to lift your motor home.
Howard
----- Original Message -----
From: "cameron" <cameron.hong@comcast.net>
To: <gmclist@temp.gmcnet.org>
Sent: Wednesday, December 28, 2011 15:27
Subject: Re: [GMCnet] motor and transmission removal


>
>
> I am in Castro Valley CA. just east of SF
> So you recommend dropping out the bottom.
> That looked like a good idea but how high do I need to jack the rig up?
> I was looking around and one guy dug a 3' hole to get his out.
> I was thinking that since I am removing the transmission and the engine
> the front would work but if dropping out the bottom is easier, then it
> sounds good to me.
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

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All is well with my Lord
Re: [GMCnet] motor and transmission removal [message #154693 is a reply to message #154681] Wed, 28 December 2011 18:30 Go to previous messageGo to next message
Bob de Kruyff   United States
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
Senior Member
cameron wrote on Wed, 28 December 2011 16:05

Also here are the particulars
1976 Palm Beach
I have owned it for three years and on the last trip it started to have less power than usual and was burning a ton of oil.
That is when I decided it was time to tear the motor down and rebuild.
I usually drive up to Tahoe in July so I need to get things going.
Has anyone done direct injection using the Rockwell intake?
That is also something I am going to do on this rebuild.
Smog is the only hic up though.
Also planning on putting in positraction.
I have done engine rebuilds and replacements on other cares but I must admit that this is not as straight forward


Cameron, you can't do direct injection with any intake. Direct injection goes directly into the combustion chamber and requires a total system approach that just isn't feasible on the 455/403. If you are thinking port injection, now that's a different story and definitely is possible.


Bob de Kruyff
78 Eleganza
Chandler, AZ
Re: [GMCnet] motor and transmission removal [message #154698 is a reply to message #154672] Wed, 28 December 2011 19:04 Go to previous messageGo to next message
g.winger is currently offline  g.winger   United States
Messages: 792
Registered: February 2008
Location: Warrenton,Missouri
Karma: 0
Senior Member
Cameron,,,,,,before you pull the engine you might consider finding out why you are burning oil and down on power. You can run a compression check or a leakdown test and find out the condition of the rings and valves. Good copression could indicate the rebuild is not neccesarry. Valve seals can be replaced without removing the motor. Lots of GMC owners have had a loss of power due to inop cintrifical advance in the dist. Would be sad to R+R the engine due to bad vacume lines or frozen weights in the dist. If you want me to explain how to R+R valve seals with the heads on let me know????,,,,PL

78 RB Royale
507 Caddy,Manny Tranny
Galvanized frame, Hubler Conversion
Not quite a new dash ,yet,,,,,,
Re: [GMCnet] motor and transmission removal [message #154700 is a reply to message #154681] Wed, 28 December 2011 19:04 Go to previous messageGo to next message
ljdavick is currently offline  ljdavick   United States
Messages: 3548
Registered: March 2007
Location: Fremont, CA
Karma: -3
Senior Member
In California you'll have to put the carburetor back on to pass smog, but that's only every other year. Port injection vs throttle body is an interesting choice, but I'm not sure what the benefit would be at our low RPM's. The GMC EFI group on google has been mostly discussing the Howell TBI with the DynamicEFI EBL that allows great flexibility in the fuel injection and spark control tables. Of course the EBL also works with multi-point fuel injection, so that might be helpful.

Somebody mentioned a vendor offering a new electronic fuel injection, was it Holley? In any case their offering didn't control spark (I believe) and that's half the battle...

If you will swap between fuel injection and a carb, then you'll have to somehow manage fuel pump pressure. Too much will certainly flood the carb and too little will kill your fuel injected engine's performance.

Larry Davick
Sent from my iPad

On Dec 28, 2011, at 3:05 PM, cameron <.net> wrote:

>
>
> Also here are the particulars
> 1976 Palm Beach
> I have owned it for three years and on the last trip it started to have less power than usual and was burning a ton of oil.
> That is when I decided it was time to tear the motor down and rebuild.
> I usually drive up to Tahoe in July so I need to get things going.
> Has anyone done direct injection using the Rockwell intake?
> That is also something I am going to do on this rebuild.
> Smog is the only hic up though.
> Also planning on putting in positraction.
> I have done engine rebuilds and replacements on other cares but I must admit that this is not as straight forward
> _______________________________________________
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Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist



Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
Re: [GMCnet] motor and transmission removal [message #154702 is a reply to message #154672] Wed, 28 December 2011 19:12 Go to previous messageGo to next message
Ken Henderson is currently offline  Ken Henderson   United States
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
Senior Member
Cameron,

I've done it all 3 ways: Out the top (actually through the door with a
long-armed engine hoist on my 23'); out the front, pulling the whole frame
clip; and, out the bottom, dropping the engine + transmission + final drive
together.

My preferred method is out the bottom all together, but I have a service
rack which makes that method much easier than if you have to jack (and
secure) the coach to achieve 30" under the main cross member.

If you also plan to do front end work, replace brake lines, etc., then
pulling the front clip would probably be best.

I didn't make photos of the out-the-bottom phase, but here's in-the-bottom:
http://www.gmcmhphotos.com/photos/showgallery.php?cat=3950

Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI+ & EBL
www.gmcwipersetc.com



On Wed, Dec 28, 2011 at 4:51 PM, Cameron Hong <cameron.hong@comcast.net>wrote:

> What is the best / easiest way to remove the motor and transmission
>
> Bottom, top, front?
>
> I have the space and the tools to take it out the front but I wanted to get
> some suggestions on the steps for removal besides the obvious.
>
> Is there any special bracing I should do?
>
> Any help would be great
>
> Thanks
>
> Cameron
>
>
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Unsubscribe or Change List Options:
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
Re: [GMCnet] motor and transmission removal [message #154705 is a reply to message #154700] Wed, 28 December 2011 20:04 Go to previous messageGo to next message
hnielsen2 is currently offline  hnielsen2   United States
Messages: 1434
Registered: February 2004
Location: Alpine CA
Karma: 0
Senior Member
On the FI it was MSD all in one unit without return line.
I'm running Howell and have for over seven plus years.
Very happy with our Howell.
Howard

----- Original Message -----
From: "Larry Davick" <ljdavick@comcast.net>
To: <gmclist@temp.gmcnet.org>
Sent: Wednesday, December 28, 2011 17:04
Subject: Re: [GMCnet] motor and transmission removal


> In California you'll have to put the carburetor back on to pass smog, but
> that's only every other year. Port injection vs throttle body is an
> interesting choice, but I'm not sure what the benefit would be at our low
> RPM's. The GMC EFI group on google has been mostly discussing the Howell
> TBI with the DynamicEFI EBL that allows great flexibility in the fuel
> injection and spark control tables. Of course the EBL also works with
> multi-point fuel injection, so that might be helpful.
>
> Somebody mentioned a vendor offering a new electronic fuel injection, was
> it Holley? In any case their offering didn't control spark (I believe)
> and that's half the battle...
>
> If you will swap between fuel injection and a carb, then you'll have to
> somehow manage fuel pump pressure. Too much will certainly flood the carb
> and too little will kill your fuel injected engine's performance.
>
> Larry Davick
> Sent from my iPad
>
> On Dec 28, 2011, at 3:05 PM, cameron <.net> wrote:
>
>>
>>
>> Also here are the particulars
>> 1976 Palm Beach
>> I have owned it for three years and on the last trip it started to have
>> less power than usual and was burning a ton of oil.
>> That is when I decided it was time to tear the motor down and rebuild.
>> I usually drive up to Tahoe in July so I need to get things going.
>> Has anyone done direct injection using the Rockwell intake?
>> That is also something I am going to do on this rebuild.
>> Smog is the only hic up though.
>> Also planning on putting in positraction.
>> I have done engine rebuilds and replacements on other cares but I must
>> admit that this is not as straight forward
>> _______________________________________________
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

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All is well with my Lord
Re: [GMCnet] motor and transmission removal [message #154706 is a reply to message #154672] Wed, 28 December 2011 20:05 Go to previous messageGo to next message
KB is currently offline  KB   United States
Messages: 1262
Registered: September 2009
Karma: 0
Senior Member
> Also planning on putting in positraction.

Positraction? Are we talking about a limited slip final drive,
or is this a new adaptation??

thanks,
Karen
1973 23'
1975 26'
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Karen 1975 26' San Jose, CA
Re: [GMCnet] motor and transmission removal [message #154710 is a reply to message #154706] Wed, 28 December 2011 20:18 Go to previous messageGo to next message
Bob de Kruyff   United States
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
Senior Member
Positraction was a GM trademark for limited slip differentials that became so generic that it is like Kleenex or U-haul Smile

Bob de Kruyff
78 Eleganza
Chandler, AZ
Re: [GMCnet] motor and transmission removal [message #154711 is a reply to message #154706] Wed, 28 December 2011 20:35 Go to previous messageGo to next message
USAussie is currently offline  USAussie   United States
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
Senior Member
Karen,

I believe you are correct and this is what "Positraction" refers to:

http://www.appliedgmc.com/prod.itml/icOid/876

Regards,
Rob M.
 
-----Original Message-----
From: KB

> Also planning on putting in positraction.

Positraction? Are we talking about a limited slip final drive, or is this a new adaptation??

thanks,
Karen

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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
Re: [GMCnet] motor and transmission removal [message #154723 is a reply to message #154711] Wed, 28 December 2011 21:49 Go to previous messageGo to next message
Dolph Santorine is currently offline  Dolph Santorine   United States
Messages: 1236
Registered: April 2011
Location: Wheeling, WV
Karma: -41
Senior Member
I love the acronym for limited slip differential.

That's about what my wife thinks I'm doing out under the motorhome on a 45 degree day.

Dolph


On Dec 28, 2011, at 9:35 PM, Rob Mueller wrote:

> Karen,
>
> I believe you are correct and this is what "Positraction" refers to:
>
> http://www.appliedgmc.com/prod.itml/icOid/876
>
> Regards,
> Rob M.
>
> -----Original Message-----
> From: KB
>
>> Also planning on putting in positraction.
>
> Positraction? Are we talking about a limited slip final drive, or is this a new adaptation??
>
> thanks,
> Karen
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

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Re: [GMCnet] motor and transmission removal [message #154725 is a reply to message #154672] Wed, 28 December 2011 22:23 Go to previous messageGo to next message
Larry is currently offline  Larry   United States
Messages: 2875
Registered: January 2004
Location: Menomonie, WI
Karma: 10
Senior Member
I have the Cad 500 and did the swap out the bottom. Here's some pics:

http://www.gmcmhphotos.com/photos/showphoto.php?photo=3772&cat=3379

http://www.gmcmhphotos.com/photos/showphoto.php?photo=3773&cat=3379

http://www.gmcmhphotos.com/photos/showphoto.php?photo=5887&cat=3379

Hope these help.


Larry Smile
78 Royale w/500 Caddy
Menomonie, WI.
Re: [GMCnet] motor and transmission removal [message #154728 is a reply to message #154725] Wed, 28 December 2011 22:26 Go to previous messageGo to next message
Larry is currently offline  Larry   United States
Messages: 2875
Registered: January 2004
Location: Menomonie, WI
Karma: 10
Senior Member
Larry wrote on Wed, 28 December 2011 22:23

I have the Cad 500 and did the swap out the bottom. Here's some pics:

http://www.gmcmhphotos.com/photos/showphoto.php?photo=3772&cat=3379

http://www.gmcmhphotos.com/photos/showphoto.php?photo=3773&cat=3379

http://www.gmcmhphotos.com/photos/showphoto.php?photo=5887&cat=3379

Hope these help.

woop...here's another

http://www.gmcmhphotos.com/photos/showphoto.php?photo=3793&cat=3379


Larry Smile
78 Royale w/500 Caddy
Menomonie, WI.
Re: [GMCnet] motor and transmission removal [message #154737 is a reply to message #154672] Thu, 29 December 2011 05:57 Go to previous messageGo to next message
Mr ERFisher is currently offline  Mr ERFisher   United States
Messages: 7117
Registered: August 2005
Karma: 2
Senior Member
here is some more poop
http://gmcmotorhome.info/engine.html#REMOVE

gene



On Wed, Dec 28, 2011 at 1:51 PM, Cameron Hong <cameron.hong@comcast.net>wrote:

> What is the best / easiest way to remove the motor and transmission
>
> Bottom, top, front?
>
> I have the space and the tools to take it out the front but I wanted to get
> some suggestions on the steps for removal besides the obvious.
>
> Is there any special bracing I should do?
>
> Any help would be great
>
> Thanks
>
> Cameron
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>



--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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Re: [GMCnet] motor and transmission removal [message #154760 is a reply to message #154723] Thu, 29 December 2011 12:56 Go to previous messageGo to next message
jhbridges is currently offline  jhbridges   United States
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
Senior Member
Somebody will put a Detroit Locker in one of them one day.  For about five miles and one turn.
 
--johnny
 
'76 23' transmiode norris
'76 palm beach


________________________________
From: Dolph Santorine <dolph@dolphsantorine.com>
To: gmclist@temp.gmcnet.org
Sent: Wednesday, December 28, 2011 10:49 PM
Subject: Re: [GMCnet] motor and transmission removal

I love the acronym for limited slip differential.

That's about what my wife thinks I'm doing out under the motorhome on a 45 degree day.

Dolph


On Dec 28, 2011, at 9:35 PM, Rob Mueller wrote:

> Karen,
>
> I believe you are correct and this is what "Positraction" refers to:
>
> http://www.appliedgmc.com/prod.itml/icOid/876
>
> Regards,
> Rob M.

> -----Original Message-----
> From: KB
>
>> Also planning on putting in positraction.
>
> Positraction?  Are we talking about a limited slip final drive, or is this a new adaptation??
>
> thanks,
> Karen
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

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Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons. Braselton, Ga. I forgive them all, save those who hurt the dogs. They must answer to me in hell
Re: [GMCnet] motor and transmission removal [message #154773 is a reply to message #154672] Thu, 29 December 2011 14:46 Go to previous messageGo to previous message
Bruce Hart is currently offline  Bruce Hart   United States
Messages: 1500
Registered: October 2011
Location: La Grange, Wyoming
Karma: 5
Senior Member
Have you seen these 12 ton jack stands for supporting the front end?

http://www.gmcmhphotos.com/photos/showphoto.php?photo=33787&title=12-ton-jack-stand&cat=5461

On Wed, Dec 28, 2011 at 2:51 PM, Cameron Hong <cameron.hong@comcast.net>wrote:

> What is the best / easiest way to remove the motor and transmission
>
> Bottom, top, front?
>
> I have the space and the tools to take it out the front but I wanted to get
> some suggestions on the steps for removal besides the obvious.
>
> Is there any special bracing I should do?
>
> Any help would be great
>
> Thanks
>
> Cameron
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>



--
Bruce Hart
GMC Wannabe
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Bruce Hart 1976 Palm Beach 1977 28' Kingsley La Grange, Wyoming
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