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Home » Public Forums » GMCnet » Change Carb (Swap edelbrock for original)
Change Carb [message #60436] Sat, 17 October 2009 12:33 Go to next message
Bob M is currently offline  Bob M   United States
Messages: 100
Registered: August 2005
Location: Carlisle, PA
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Senior Member
I asked this earlier but I think it may have gotten lost in the many responses to the original thread. I presently have an Edelbrock carb on my '77 Eleganza II. It also has headers. It runs great, especially at highway speeds (55-65 mph). The coach averages 8.1 mpg. I have the original carb but it probably needs rebuilding. I have no interest in returning the coach to original. Is their any advantage to rebuild the carb and swapping out the Edelbrock? It almost seems like the answer may be: "If it ain't broke, don't fix it!". Thanks for any replies.
Bob Moss
'77 Eleganza II
Carlisle, PA


Bob Moss
Re: [GMCnet] Change Carb [message #60440 is a reply to message #60436] Sat, 17 October 2009 13:55 Go to previous messageGo to next message
Tin Gerbil is currently offline  Tin Gerbil   United States
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Registered: October 2006
Location: Vancouver Island, B.C.
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Senior Member
Bob;
The only advantage I can see is if you have a raised hatch that you trip
over, you could get rid of it. If you have the original intake manifold
and OEM hatch cover, why touch the carb.
Have you considered selling the original carb as a core and spending the
money on the GMC?
Cores are getting scarce and some fellows really need them.
Gordon

Bob Moss wrote:
>
> I asked this earlier but I think it may have gotten lost in the many
> responses to the original thread. I presently have an Edelbrock carb
> on my '77 Eleganza II. It also has headers. It runs great, especially
> at highway speeds (55-65 mph). The coach averages 8.1 mpg. I have the
> original carb but it probably needs rebuilding. I have no interest in
> returning the coach to original. Is their any advantage to rebuild
> the carb and swapping out the Edelbrock? It almost seems like the
> answer may be: "If it ain't broke, don't fix it!". Thanks for any
> replies. Bob Moss '77 Eleganza II Carlisle, PA
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Gordon '74 Canyon Lands "Tin Gerbil" Vancouver Island, B.C.
Re: [GMCnet] Change Carb [message #60443 is a reply to message #60436] Sat, 17 October 2009 14:33 Go to previous messageGo to next message
Gary Berry is currently offline  Gary Berry   United States
Messages: 1002
Registered: May 2005
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Senior Member
Hey Bob;

I have an Edelbrock carb on my coach, and it works just fine (at
least compared to the original carb that was on my 76 PB), and it gets
around 8mpg also. I am going to change it in favor of the Howell Fuel
Injection system. The Edelbrock will wind up on my brother's 76 PB,
cause his carb is a pile.
--
Gary and Diana Berry
73 CL Stretch in Wa.
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Re: Change Carb [message #60477 is a reply to message #60436] Sat, 17 October 2009 20:34 Go to previous messageGo to next message
mike miller   United States
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
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fums6 wrote on Sat, 17 October 2009 10:33

... I presently have an Edelbrock carb on my '77 Eleganza II. ...

... It almost seems like the answer may be: "If it ain't broke, don't fix it!". ...


My PO also installed an Edelbrook on my '78. (With a 403.) It seems to work fine and gets good mileage but I have not checked it with an O2 gauge. (I DO still have the original carb.)

I can not see spending $600 to get the original carb rebuilt until (if) I have problems with what is on it.


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
Re: [GMCnet] Change Carb [message #60479 is a reply to message #60477] Sat, 17 October 2009 20:42 Go to previous messageGo to next message
USAussie is currently offline  USAussie   United States
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Registered: July 2007
Location: Sydney, Australia
Karma: 6
Senior Member
Mike,

Whoever is charging $600 to rebuild Quadrajets should be wearing a mask
carrying a gun!

Dick Paterson charges $309.00 USD plus shipping.

Regards,
Rob Mueller
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
'75 Avion - USA - The Parts Coach TZE 365V100324

-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Mike Miller
Sent: Sunday, October 18, 2009 12:35 PM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Change Carb

My PO also installed an Edelbrook on my '78. (With a 403.) It seems to work
fine and gets good mileage but I have not checked it with an O2 gauge. (I
DO still have the original carb.)

I can not see spending $600 to get the original carb rebuilt until (if) I
have problems with what is on it.
--
Mike Miller
`73 26' X Painted D.
`78 23' Birchaven
Hillsboro, OR
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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] Change Carb [message #60482 is a reply to message #60479] Sat, 17 October 2009 21:14 Go to previous messageGo to next message
Gary Berry is currently offline  Gary Berry   United States
Messages: 1002
Registered: May 2005
Karma: -1
Senior Member
Dick Patterson charges the $300 or so to rebuild, but if your core
isn't good, then it's another $300 or so and you won't know until you
send it in and he checks it.

--
Gary and Diana Berry
73 CL Stretch in Wa.
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Re: [GMCnet] Change Carb [message #60486 is a reply to message #60482] Sat, 17 October 2009 22:02 Go to previous message
USAussie is currently offline  USAussie   United States
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
Senior Member
Gary,

Dick had a few slides in his presentation at Pueblo which showed how to
determine if your Quadrajet was rebuildable or not.

Basically you have to determine whether or not garage gorillas have
tightened the four mounting bolts down so hard that it warped the top cover,
body, and/or the base plate. The Maintenance Manual specifies 15 ft lb
torque but how many mechanics have you seen using a torque wrench to tighten
down a carb?

He suggested the people call him so he can walk them through how to inspect
it and to confirm it was a carb off a GMC. He will not accept non GMC
Quadrajets as an exchange.

He also noted that he didn't have any cores so if yours is no good you're
probably SOL!

I got a rebuildable core to replace the Carter AFB that was on Double
Trouble from Michael Bozardt for about $100.

Regards,
Rob Mueller
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
'75 Avion - USA - The Parts Coach TZE 365V100324

-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Gary Berry
Sent: Sunday, October 18, 2009 1:15 PM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Change Carb

Dick Patterson charges the $300 or so to rebuild, but if your core
isn't good, then it's another $300 or so and you won't know until you
send it in and he checks it.

--
Gary and Diana Berry
73 CL Stretch in Wa.
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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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