GMCforum
For enthusiast of the Classic GMC Motorhome built from 1973 to 1978. A web-based mirror of the GMCnet mailing list.

Home » Public Forums » GMCnet » [GMCnet] Keeping it Real, 8 to 10 mpg
[GMCnet] Keeping it Real, 8 to 10 mpg [message #172458] Thu, 07 June 2012 16:38 Go to next message
Mr ERFisher is currently offline  Mr ERFisher   United States
Messages: 7117
Registered: August 2005
Karma: 2
Senior Member
> time to send this again:
>
just for the new guys ;>)

>
>
> Last weekend I talked to a new GMC owner. He said he drove his new
> (to him) 12,000 pound, stock GMC home and got almost 10 miles per
> gallon. "Excellent !" I told him. I love my GMC.
>
> Trying to lower the cost of driving his GMC with the high cost of gas,
> and trying to get the 17 to 18 MPG of new trucks, he said:
>
> Tire pressure
> He runs 80 lb of tire pressure to reduce the rolling drag, how much
> will that improve his MPG? I said you will get 8 to 10 MPG depending
> upon if you tow a Toad or not.
>
> 3" Exhaust
> What if I invest $2,000 in headers, 3" exhaust, single rear low back
> pressure exhaust system? I said you will get 8 to 10 MPG depending
> upon if you tow a Toad or not.
>
> Reduced weight
> What if I throw out the 400 lb Onan, save 200 lb with Al rims, and get
> rid of the particle board, get rid of the propane tank and stove, go
> all electric with 200 lb of solar panels and spare sets of batteries ?
> I said you will get 8 to 10 MPG depending upon if you tow a Toad or
> not.
>
> Electronic Fuel Injection
> What if I put in a $1500 TBI or a $5000 Multi port injection system.
> I said you will get 8 to 10 MPG depending upon if you tow a Toad or
> not.
>
> Engine Upgrade
> What if I spend $20,000 for a 454 or 8.1 modern engine replacement
> with factory mpi, and computer. I said you will get 8 to 10 MPG
> depending upon if you tow a Toad or not.
>
> Diesel
> What if I invest $15,000 in a diesel conversion to burn diesel that
> cost 10% more than premium gas? I said you will get 8 to 10 MPG
> depending upon if you tow a Toad or not.
>
> Propane
> What if I spend $5,000 or so for a propane conversion, with 200 pound
> tanks, hoses, controls, and hard to find fuel that (so far) costs 10%
> less than gas. I said you will get 8 to 10 MPG depending upon if you
> tow a Toad or not.
>
> Other alternatives
> Things got sort of quiet, and feeling I was just a grumpy old man ( I
> love my GMC), I wondered over to another conversation about another
> camper with a huge Country ----- motor home. He was having trouble
> with this beauty, it was determined his inverter was not working. Not
> so bad I guess that happens. Then it was said the replacement
> inverter will cost $6,000. WOW, I could buy a second GMC for that
> sort of money!
>
> I thought to my self, I wonder if he gets 8 to 10 MPG depending upon
> if he tows a Toad or not ?
>
> I came home to work on my new headliner, and furnace install. I
> thought " I wonder if I get 8 to 10 MPG depending upon if I tow a
> Toad or not".
>
> I never check my MPG any more, I just don't want to break down on the
> road. I guess every one has their own agendas ;>)
>
>

JWID
gene


--
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
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

Re: [GMCnet] Keeping it Real, 8 to 10 mpg [message #172460 is a reply to message #172458] Thu, 07 June 2012 16:43 Go to previous messageGo to next message
Harry is currently offline  Harry   Canada
Messages: 1888
Registered: October 2007
Location: Victoria, BC CANADA
Karma: 3
Senior Member
I always liked this...
Re: [GMCnet] Keeping it Real, 8 to 10 mpg [message #172463 is a reply to message #172458] Thu, 07 June 2012 16:50 Go to previous messageGo to next message
kelvin is currently offline  kelvin   United States
Messages: 608
Registered: February 2004
Location: Eugene, OR
Karma: 0
Senior Member
I seriously want to see 11mph one day.

I got 10.5 once with a big tailwind pushing me down the Columbia Gorge
on I-84.
Us lightweight (#10,000) 230 drivers should be able to do better!

Kelvin "9.5 solo, 8.5 towing" Dietz


On 6/7/2012 2:38 PM, gene Fisher wrote:
>> time to send this again:
>>
> just for the new guys ;>)
>
>>
>> Last weekend I talked to a new GMC owner. He said he drove his new
>> (to him) 12,000 pound, stock GMC home and got almost 10 miles per
>> gallon. "Excellent !" I told him. I love my GMC.
>>
>> Trying to lower the cost of driving his GMC with the high cost of gas,
>> and trying to get the 17 to 18 MPG of new trucks, he said:
>>
>> Tire pressure
>> He runs 80 lb of tire pressure to reduce the rolling drag, how much
>> will that improve his MPG? I said you will get 8 to 10 MPG depending
>> upon if you tow a Toad or not.
>>
>> 3" Exhaust
>> What if I invest $2,000 in headers, 3" exhaust, single rear low back
>> pressure exhaust system? I said you will get 8 to 10 MPG depending
>> upon if you tow a Toad or not.
>>
>> Reduced weight
>> What if I throw out the 400 lb Onan, save 200 lb with Al rims, and get
>> rid of the particle board, get rid of the propane tank and stove, go
>> all electric with 200 lb of solar panels and spare sets of batteries ?
>> I said you will get 8 to 10 MPG depending upon if you tow a Toad or
>> not.
>>
>> Electronic Fuel Injection
>> What if I put in a $1500 TBI or a $5000 Multi port injection system.
>> I said you will get 8 to 10 MPG depending upon if you tow a Toad or
>> not.
>>
>> Engine Upgrade
>> What if I spend $20,000 for a 454 or 8.1 modern engine replacement
>> with factory mpi, and computer. I said you will get 8 to 10 MPG
>> depending upon if you tow a Toad or not.
>>
>> Diesel
>> What if I invest $15,000 in a diesel conversion to burn diesel that
>> cost 10% more than premium gas? I said you will get 8 to 10 MPG
>> depending upon if you tow a Toad or not.
>>
>> Propane
>> What if I spend $5,000 or so for a propane conversion, with 200 pound
>> tanks, hoses, controls, and hard to find fuel that (so far) costs 10%
>> less than gas. I said you will get 8 to 10 MPG depending upon if you
>> tow a Toad or not.
>>
>> Other alternatives
>> Things got sort of quiet, and feeling I was just a grumpy old man ( I
>> love my GMC), I wondered over to another conversation about another
>> camper with a huge Country ----- motor home. He was having trouble
>> with this beauty, it was determined his inverter was not working. Not
>> so bad I guess that happens. Then it was said the replacement
>> inverter will cost $6,000. WOW, I could buy a second GMC for that
>> sort of money!
>>
>> I thought to my self, I wonder if he gets 8 to 10 MPG depending upon
>> if he tows a Toad or not ?
>>
>> I came home to work on my new headliner, and furnace install. I
>> thought " I wonder if I get 8 to 10 MPG depending upon if I tow a
>> Toad or not".
>>
>> I never check my MPG any more, I just don't want to break down on the
>> road. I guess every one has their own agendas ;>)
>>
>>
> JWID
> gene
>
>

_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

Re: [GMCnet] Keeping it Real, 8 to 10 mpg [message #172464 is a reply to message #172458] Thu, 07 June 2012 17:05 Go to previous messageGo to next message
RF_Burns is currently offline  RF_Burns   Canada
Messages: 2276
Registered: June 2008
Location: S. Ontario, Canada
Karma: 3
Senior Member
Its easy to get 10-12.5 mpg, just use Imperial Gallons!


Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
Re: [GMCnet] Keeping it Real, 8 to 10 mpg [message #172465 is a reply to message #172464] Thu, 07 June 2012 17:08 Go to previous messageGo to next message
kelvin is currently offline  kelvin   United States
Messages: 608
Registered: February 2004
Location: Eugene, OR
Karma: 0
Senior Member
Yeah... problem is they charge you a lot more for those...

On 6/7/2012 3:05 PM, Bruce Hislop wrote:
>
> Its easy to get 10-12.5 mpg, just use Imperial Gallons!
>

_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

Re: [GMCnet] Keeping it Real, 8 to 10 mpg [message #172471 is a reply to message #172463] Thu, 07 June 2012 17:31 Go to previous messageGo to next message
george beck is currently offline  george beck   United States
Messages: 66
Registered: December 2008
Karma: 0
Member
With my Turbo City set up I don't record all the time, but after it was installed, kept my gas vs mileage, and measured 10.8


________________________________
From: Kelvin Dietz <kelvin@datsuns.com>
To: gmclist@temp.gmcnet.org
Sent: Thursday, June 7, 2012 5:50 PM
Subject: Re: [GMCnet] Keeping it Real, 8 to 10 mpg

I seriously want to see 11mph one day.

I got 10.5 once with a big tailwind pushing me down the Columbia Gorge
on I-84.
Us lightweight (#10,000) 230 drivers should be able to do better!

Kelvin "9.5 solo, 8.5 towing" Dietz


On 6/7/2012 2:38 PM, gene Fisher wrote:
>> time to send this again:
>>
> just for the new guys ;>)
>
>>
>> Last weekend I talked to a new GMC owner.  He said he drove his new
>> (to him) 12,000 pound, stock GMC home and got almost 10 miles per
>> gallon.  "Excellent !" I told him. I love my GMC.
>>
>> Trying to lower the cost of driving his GMC with the high cost of gas,
>> and  trying to get the 17 to 18 MPG of new trucks, he said:
>>
>> Tire pressure
>> He runs 80 lb of tire pressure to reduce the rolling drag, how much
>> will that improve his MPG?  I said you will get 8 to 10 MPG depending
>> upon if you tow a Toad or not.
>>
>> 3" Exhaust
>> What if I invest $2,000 in headers, 3" exhaust, single rear low back
>> pressure exhaust system?  I said you will get 8 to 10 MPG depending
>> upon if you tow a Toad or not.
>>
>> Reduced weight
>> What if I throw out the 400 lb Onan, save 200 lb with Al rims, and get
>> rid of the particle board, get rid of the propane tank and stove, go
>> all electric with 200 lb of solar panels and spare sets of batteries ?
>>  I said you will get 8 to 10 MPG depending upon if you tow a Toad or
>> not.
>>
>> Electronic Fuel Injection
>> What if I put in  a $1500 TBI or a $5000 Multi port injection system.
>> I said you will get 8 to 10 MPG depending upon if you tow a Toad or
>> not.
>>
>> Engine Upgrade
>> What if I spend $20,000 for a 454 or 8.1 modern engine replacement
>> with factory mpi, and computer.  I said you will get 8 to 10 MPG
>> depending upon if you tow a Toad or not.
>>
>> Diesel
>> What if I invest $15,000 in a diesel conversion to burn diesel that
>> cost 10% more than premium gas?  I said you will get 8 to 10 MPG
>> depending upon if you tow a Toad or not.
>>
>> Propane
>> What if I spend $5,000 or so for a propane conversion, with 200 pound
>> tanks, hoses, controls, and hard to find fuel that (so far) costs 10%
>> less than gas.  I said you will get 8 to 10 MPG depending upon if you
>> tow a Toad or not.
>>
>> Other alternatives
>> Things got sort of quiet, and feeling I was just a grumpy old man ( I
>> love my GMC), I wondered over to another conversation about another
>> camper with a huge Country ----- motor home.  He was having trouble
>> with this beauty, it was determined his inverter was not working.  Not
>> so bad I guess that happens.  Then it was said the replacement
>> inverter will cost $6,000.  WOW, I could buy a second GMC for that
>> sort of money!
>>
>> I thought to my self,  I wonder if he gets 8 to 10 MPG depending upon
>> if he tows a Toad or not ?
>>
>> I came home to work on my new headliner, and furnace install.  I
>> thought " I  wonder if I  get 8 to 10 MPG depending upon if I tow a
>> Toad or not".
>>
>> I never check my MPG any more, I just don't want to break down on the
>> road.  I guess every one has their own agendas ;>)
>>
>>
> JWID
> gene
>
>

_______________________________________________
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

Re: [GMCnet] Keeping it Real, 8 to 10 mpg [message #172474 is a reply to message #172463] Thu, 07 June 2012 17:36 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
I honestly believe that with fuel injection and an electronic spark control you will get nearer to 11 than with any other mod. You may have to drive south, so that it's all downhill, but I think it's possible.


Larry Davick
Fremont, California
The Mystery Machine
'76 (ish) Palm Beach

----- Original Message -----
From: "Kelvin Dietz" <kelvin@datsuns.com>
To: gmclist@temp.gmcnet.org
Sent: Thursday, June 7, 2012 2:50:33 PM
Subject: Re: [GMCnet] Keeping it Real, 8 to 10 mpg

I seriously want to see 11mph one day.

I got 10.5 once with a big tailwind pushing me down the Columbia Gorge
on I-84.
Us lightweight (#10,000) 230 drivers should be able to do better!

Kelvin "9.5 solo, 8.5 towing" Dietz

_______________________________________________
GMCnet mailing list
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] Keeping it Real, 8 to 10 mpg [message #172476 is a reply to message #172458] Thu, 07 June 2012 17:41 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
Has Manny ever shared the mileage he gets with his 4 cylinder diesel?


Larry Davick
Fremont, California
The Mystery Machine
'76 (ish) Palm Beach

----- Original Message -----
From: "gene Fisher" <mr.erfisher@gmail.com>
To: gmclist@temp.gmcnet.org
Sent: Thursday, June 7, 2012 2:38:31 PM
Subject: [GMCnet] Keeping it Real, 8 to 10 mpg

> time to send this again:
>
just for the new guys ;>)

>
>
> Last weekend I talked to a new GMC owner. He said he drove his new
> (to him) 12,000 pound, stock GMC home and got almost 10 miles per
> gallon. "Excellent !" I told him. I love my GMC.
>
> Trying to lower the cost of driving his GMC with the high cost of gas,
> and trying to get the 17 to 18 MPG of new trucks, he said:
>
> Tire pressure
> He runs 80 lb of tire pressure to reduce the rolling drag, how much
> will that improve his MPG? I said you will get 8 to 10 MPG depending
> upon if you tow a Toad or not.
>
> 3" Exhaust
> What if I invest $2,000 in headers, 3" exhaust, single rear low back
> pressure exhaust system? I said you will get 8 to 10 MPG depending
> upon if you tow a Toad or not.
>
> Reduced weight
> What if I throw out the 400 lb Onan, save 200 lb with Al rims, and get
> rid of the particle board, get rid of the propane tank and stove, go
> all electric with 200 lb of solar panels and spare sets of batteries ?
> I said you will get 8 to 10 MPG depending upon if you tow a Toad or
> not.
>
> Electronic Fuel Injection
> What if I put in a $1500 TBI or a $5000 Multi port injection system.
> I said you will get 8 to 10 MPG depending upon if you tow a Toad or
> not.
>
> Engine Upgrade
> What if I spend $20,000 for a 454 or 8.1 modern engine replacement
> with factory mpi, and computer. I said you will get 8 to 10 MPG
> depending upon if you tow a Toad or not.
>
> Diesel
> What if I invest $15,000 in a diesel conversion to burn diesel that
> cost 10% more than premium gas? I said you will get 8 to 10 MPG
> depending upon if you tow a Toad or not.
>
> Propane
> What if I spend $5,000 or so for a propane conversion, with 200 pound
> tanks, hoses, controls, and hard to find fuel that (so far) costs 10%
> less than gas. I said you will get 8 to 10 MPG depending upon if you
> tow a Toad or not.
>
> Other alternatives
> Things got sort of quiet, and feeling I was just a grumpy old man ( I
> love my GMC), I wondered over to another conversation about another
> camper with a huge Country ----- motor home. He was having trouble
> with this beauty, it was determined his inverter was not working. Not
> so bad I guess that happens. Then it was said the replacement
> inverter will cost $6,000. WOW, I could buy a second GMC for that
> sort of money!
>
> I thought to my self, I wonder if he gets 8 to 10 MPG depending upon
> if he tows a Toad or not ?
>
> I came home to work on my new headliner, and furnace install. I
> thought " I wonder if I get 8 to 10 MPG depending upon if I tow a
> Toad or not".
>
> I never check my MPG any more, I just don't want to break down on the
> road. I guess every one has their own agendas ;>)
>
>

JWID
gene


--
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
_______________________________________________
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


Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
Re: [GMCnet] Keeping it Real, 8 to 10 mpg [message #172483 is a reply to message #172463] Thu, 07 June 2012 18:39 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
Asheville to N. GA 55  on the freeway cruise set, 12.  Using Carolina (Non smog area gas, and gas no alcohol) Only once never since.  Usually 10, drops when the toad's on.
 
--johnny
 
'76 23' transmode norris
'76 palm beach
 

From: Kelvin Dietz <kelvin@datsuns.com>
To: gmclist@temp.gmcnet.org
Sent: Thursday, June 7, 2012 5:50 PM
Subject: Re: [GMCnet] Keeping it Real, 8 to 10 mpg

I seriously want to see 11mph one day.

I got 10.5 once with a big tailwind pushing me down the Columbia Gorge
on I-84.
Us lightweight (#10,000) 230 drivers should be able to do better!

Kelvin "9.5 solo, 8.5 towing" Dietz


On 6/7/2012 2:38 PM, gene Fisher wrote:
>> time to send this again:
>>
> just for the new guys ;>)
>
>>
>> Last weekend I talked to a new GMC owner.  He said he drove his new
>> (to him) 12,000 pound, stock GMC home and got almost 10 miles per
>> gallon.  "Excellent !" I told him. I love my GMC.
>>
>> Trying to lower the cost of driving his GMC with the high cost of gas,
>> and  trying to get the 17 to 18 MPG of new trucks, he said:
>>
>> Tire pressure
>> He runs 80 lb of tire pressure to reduce the rolling drag, how much
>> will that improve his MPG?  I said you will get 8 to 10 MPG depending
>> upon if you tow a Toad or not.
>>
>> 3" Exhaust
>> What if I invest $2,000 in headers, 3" exhaust, single rear low back
>> pressure exhaust system?  I said you will get 8 to 10 MPG depending
>> upon if you tow a Toad or not.
>>
>> Reduced weight
>> What if I throw out the 400 lb Onan, save 200 lb with Al rims, and get
>> rid of the particle board, get rid of the propane tank and stove, go
>> all electric with 200 lb of solar panels and spare sets of batteries ?
>>  I said you will get 8 to 10 MPG depending upon if you tow a Toad or
>> not.
>>
>> Electronic Fuel Injection
>> What if I put in  a $1500 TBI or a $5000 Multi port injection system.
>> I said you will get 8 to 10 MPG depending upon if you tow a Toad or
>> not.
>>
>> Engine Upgrade
>> What if I spend $20,000 for a 454 or 8.1 modern engine replacement
>> with factory mpi, and computer.  I said you will get 8 to 10 MPG
>> depending upon if you tow a Toad or not.
>>
>> Diesel
>> What if I invest $15,000 in a diesel conversion to burn diesel that
>> cost 10% more than premium gas?  I said you will get 8 to 10 MPG
>> depending upon if you tow a Toad or not.
>>
>> Propane
>> What if I spend $5,000 or so for a propane conversion, with 200 pound
>> tanks, hoses, controls, and hard to find fuel that (so far) costs 10%
>> less than gas.  I said you will get 8 to 10 MPG depending upon if you
>> tow a Toad or not.
>>
>> Other alternatives
>> Things got sort of quiet, and feeling I was just a grumpy old man ( I
>> love my GMC), I wondered over to another conversation about another
>> camper with a huge Country ----- motor home.  He was having trouble
>> with this beauty, it was determined his inverter was not working.  Not
>> so bad I guess that happens.  Then it was said the replacement
>> inverter will cost $6,000.  WOW, I could buy a second GMC for that
>> sort of money!
>>
>> I thought to my self,  I wonder if he gets 8 to 10 MPG depending upon
>> if he tows a Toad or not ?
>>
>> I came home to work on my new headliner, and furnace install.  I
>> thought " I  wonder if I  get 8 to 10 MPG depending upon if I tow a
>> Toad or not".
>>
>> I never check my MPG any more, I just don't want to break down on the
>> road.  I guess every one has their own agendas ;>)
>>
>>
> JWID
> gene
>
>

_______________________________________________
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



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] Keeping it Real, 8 to 10 mpg [message #172484 is a reply to message #172463] Thu, 07 June 2012 18:45 Go to previous messageGo to next message
Harry is currently offline  Harry   Canada
Messages: 1888
Registered: October 2007
Location: Victoria, BC CANADA
Karma: 3
Senior Member
[quote title=Kelvin Dietz wrote on Thu, 07 June 2012 14:50]I seriously want to see 11mph one day.

I got 10.5 once with a big tailwind pushing me down the Columbia Gorge
on I-84.
Us lightweight (#10,000) 230 drivers should be able to do better!

Kelvin "9.5 solo, 8.5 towing" Dietz

11mph??????











Re: [GMCnet] Keeping it Real, 8 to 10 mpg [message #172489 is a reply to message #172476] Thu, 07 June 2012 18:56 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
Gene / Larry,

I am reasonably confident that Dave Lenzi has advised that he gets more than
10 mpg with his 8.1 Vortec; I think it's 12. I couldn't believe it when he
let me drive it. I can tell you that it GOES! That's because the 8.1
produces 410 ft lb of torque at 1200 rpm.

Correct me if I'm wrong but when I visited with you and Manny on the way
back to Sydney didn't Manny say he got 17 mpg or was it 14? It was some
"teen" I do know that.

Manny also mentioned that he was "playing" with the turbo boost as he was
not happy with the power level - yet. His goal was to extract as much
horsepower without stressing the engine.

Marc Hogenboom noted in his presentation at the Shawnee GMCMI Convention
that he got 14-15 mpg out of his diesel with a mechanical fuel injection
system.

The down side is that you have to have SERIOUS mechanical skills to install
any one of these engines.

Regards,
Rob M.

-----Original Message-----
From: Larry Davick

Has Manny ever shared the mileage he gets with his 4 cylinder diesel?

Larry

----- Original Message -----
From: "gene Fisher"
>
> Engine Upgrade
> What if I spend $20,000 for a 454 or 8.1 modern engine replacement
> with factory mpi, and computer. I said you will get 8 to 10 MPG
> depending upon if you tow a Toad or not.
>
> Diesel
> What if I invest $15,000 in a diesel conversion to burn diesel that
> cost 10% more than premium gas? I said you will get 8 to 10 MPG
> depending upon if you tow a Toad or not.
>
gene

_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist



Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426
Re: [GMCnet] Keeping it Real, 8 to 10 mpg [message #172493 is a reply to message #172484] Thu, 07 June 2012 19:09 Go to previous messageGo to next message
George Beckman is currently offline  George Beckman   United States
Messages: 1085
Registered: October 2008
Location: Colfax, CA
Karma: 11
Senior Member
[quote title=Harry wrote on Thu, 07 June 2012 16:45]
Kelvin Dietz wrote on Thu, 07 June 2012 14:50

I seriously want to see 11mph one day.

I got 10.5 once with a big tailwind pushing me down the Columbia Gorge
on I-84.
Us lightweight (#10,000) 230 drivers should be able to do better!

Kelvin "9.5 solo, 8.5 towing" Dietz

11mph??????




On the way to Casa de Fruta, going south on 5, I was at 10.6 according to the WUD, which is close to pump reality. I was ready to brag to Gene. Then I went over Pacheco pass. When I got to Casa, I was at 9.4.

Ha! Everyone knows going South is down... Just look at a map.

Between 8 and 10, just like Gene said. But I am all hopeful...


'74 Eleganza, SE, Howell + EBL
Best Wishes,
George
Re: [GMCnet] Keeping it Real, 8 to 10 mpg [message #172494 is a reply to message #172489] Thu, 07 June 2012 19:12 Go to previous messageGo to next message
stick miller is currently offline  stick miller   United States
Messages: 1036
Registered: March 2010
Location: Americus, Georgia
Karma: 0
Senior Member
Fuel injection, no-ethanol gas, 2 roof air conditioners, big roof storage unit, small dog and cockatiel, I never felt like I got more than 5 mpg.

Stick Miller
'78 Royale - "White Trash" - she left me for another man
'76 Eleganza - "Cousin Eddie" Sold
'84 Bluebird Wanderlodge - "Past Tents"
Americus, GA
Re: [GMCnet] Keeping it Real, 8 to 10 mpg [message #172504 is a reply to message #172458] Thu, 07 June 2012 19:46 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
Gene;
LOL!
Inverter for my brothers SOB pusher
$5,000.
He had insurance he paid the first $500,00
Get 8 to 10 MPG with built engine, cam, roller rockers, Howell TBI
Love our GMC.
Howard

----- Original Message -----
From: "gene Fisher" <mr.erfisher@gmail.com>
To: <gmclist@temp.gmcnet.org>
Sent: Thursday, June 07, 2012 14:38
Subject: [GMCnet] Keeping it Real, 8 to 10 mpg


> time to send this again:
>
just for the new guys ;>)

>
>
> Last weekend I talked to a new GMC owner. He said he drove his new
> (to him) 12,000 pound, stock GMC home and got almost 10 miles per
> gallon. "Excellent !" I told him. I love my GMC.
>
> Trying to lower the cost of driving his GMC with the high cost of gas,
> and trying to get the 17 to 18 MPG of new trucks, he said:
>
> Tire pressure
> He runs 80 lb of tire pressure to reduce the rolling drag, how much
> will that improve his MPG? I said you will get 8 to 10 MPG depending
> upon if you tow a Toad or not.
>
> 3" Exhaust
> What if I invest $2,000 in headers, 3" exhaust, single rear low back
> pressure exhaust system? I said you will get 8 to 10 MPG depending
> upon if you tow a Toad or not.
>
> Reduced weight
> What if I throw out the 400 lb Onan, save 200 lb with Al rims, and get
> rid of the particle board, get rid of the propane tank and stove, go
> all electric with 200 lb of solar panels and spare sets of batteries ?
> I said you will get 8 to 10 MPG depending upon if you tow a Toad or
> not.
>
> Electronic Fuel Injection
> What if I put in a $1500 TBI or a $5000 Multi port injection system.
> I said you will get 8 to 10 MPG depending upon if you tow a Toad or
> not.
>
> Engine Upgrade
> What if I spend $20,000 for a 454 or 8.1 modern engine replacement
> with factory mpi, and computer. I said you will get 8 to 10 MPG
> depending upon if you tow a Toad or not.
>
> Diesel
> What if I invest $15,000 in a diesel conversion to burn diesel that
> cost 10% more than premium gas? I said you will get 8 to 10 MPG
> depending upon if you tow a Toad or not.
>
> Propane
> What if I spend $5,000 or so for a propane conversion, with 200 pound
> tanks, hoses, controls, and hard to find fuel that (so far) costs 10%
> less than gas. I said you will get 8 to 10 MPG depending upon if you
> tow a Toad or not.
>
> Other alternatives
> Things got sort of quiet, and feeling I was just a grumpy old man ( I
> love my GMC), I wondered over to another conversation about another
> camper with a huge Country ----- motor home. He was having trouble
> with this beauty, it was determined his inverter was not working. Not
> so bad I guess that happens. Then it was said the replacement
> inverter will cost $6,000. WOW, I could buy a second GMC for that
> sort of money!
>
> I thought to my self, I wonder if he gets 8 to 10 MPG depending upon
> if he tows a Toad or not ?
>
> I came home to work on my new headliner, and furnace install. I
> thought " I wonder if I get 8 to 10 MPG depending upon if I tow a
> Toad or not".
>
> I never check my MPG any more, I just don't want to break down on the
> road. I guess every one has their own agendas ;>)
>
>

JWID
gene


--
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
_______________________________________________
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



All is well with my Lord
Re: [GMCnet] Keeping it Real, 8 to 10 mpg [message #172525 is a reply to message #172504] Thu, 07 June 2012 23:08 Go to previous messageGo to next message
Harry is currently offline  Harry   Canada
Messages: 1888
Registered: October 2007
Location: Victoria, BC CANADA
Karma: 3
Senior Member
I seriously want to see 11mph one day.

I got 10.5 once with a big tailwind pushing me down the Columbia Gorge
on I-84.
Us lightweight (#10,000) 230 drivers should be able to do better!

Kelvin "9.5 solo, 8.5 towing" Dietz

11mph??????

11 MILES PER HOUR????
Re: [GMCnet] Keeping it Real, 8 to 10 mpg [message #172526 is a reply to message #172476] Thu, 07 June 2012 23:19 Go to previous messageGo to next message
mannystrans is currently offline  mannystrans   United States
Messages: 209
Registered: June 2006
Karma: 1
Senior Member
On Thu, Jun 7, 2012 at 3:41 PM, Larry Davick <ljdavick@comcast.net> wrote:
Has Manny ever shared the mileage he gets with his 4 cylinder diesel?

We followed another GMCer to a 49er rally in Shady Cove OR. I made it
there and back with a full tank of diesel.
The trip was over 800 miles.
That tank, I got better than Gene's 8-10 mpg.
One time I was filling the tank and the pump stopped at $75.00. So I
put my card in and got another $75.00. Tank still wasn't full, in
frustration, I got in the motorhome and left.
We've been taking short trips so it takes a while before I need fuel.

--
Manny Trovao
mannystrans@gmail.com
Manny's Trans / Power Drive
San Jose, California
408-937-1583
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

Re: [GMCnet] Keeping it Real, 8 to 10 mpg [message #172540 is a reply to message #172458] Fri, 08 June 2012 00:58 Go to previous messageGo to next message
Chr$ is currently offline  Chr$   Taiwan
Messages: 2690
Registered: January 2004
Location: Scottsdale, AZ
Karma: 1
Senior Member
I'll never get 10. Hell, I'll probably never get 8. I keep my foot in the carb too damn much.

Seriously, I think I got around 10 on the way down to Tucson taking it easy. I did 75-80 on the way back, so no way... Rolling Eyes


-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"
Re: [GMCnet] Keeping it Real, 8 to 10 mpg [message #172548 is a reply to message #172458] Fri, 08 June 2012 07:15 Go to previous messageGo to next message
Steven Ferguson is currently offline  Steven Ferguson   United States
Messages: 3447
Registered: May 2006
Karma: 0
Senior Member
Gene says: I said you will get 8 to 10 MPG depending upon if you tow a
Toad or not.
And that, my friends, is the gist of it.

--
Fathom the hypocrisy of a nation where every citizen must prove they have
health insurance......but not everyone has to prove they're a citizen.
Steve Ferguson
Sierra Vista, AZ
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

Re: [GMCnet] Keeping it Real, 8 to 10 mpg [message #172554 is a reply to message #172458] Fri, 08 June 2012 08:09 Go to previous messageGo to next message
Byron Songer is currently offline  Byron Songer   United States
Messages: 1912
Registered: August 2007
Location: Louisville, KY
Karma: -2
Senior Member

During the four years we drove our 78 Royale I never saw more than 9.2
mpg. In fact, the overall mileage for the coach (one AC on the roof and a
pod, no tow) was 8.6. I would have enjoyed getting closer to 10. The only
way to do that was to lie. I will say, also, that the best we got was when
we happened to get some "real" gasoline in West Virginia in 2008. Ethanol,
in my mind, gets the credit for reducing economy and performance (cough,
cough).

Now, like a few others loose in America, I enjoy better mileage and higher
prices in a diesel pusher. Cost of fuel per mile is about the same -- the
torque at 1625 rpm and a six-speed transmission is amazing.

Lest some of you think I'm crazy just consider this -- I still greatly
admire the GMC and the community of owners that goes with it's admirers.

Byron Songer
Louisville, KY
GMC Paint Designs and Illustrations
http://www.songerconsulting.net/gallery/



This reply is in reference to what is provided below:

>just for the new guys ;>)


_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist



-- Byron Songer
Full-timing to enjoy the USA
Former owner but still an admirer
GMC paint schemes at -
http://www.songerconsulting.net
Re: [GMCnet] Keeping it Real, 8 to 10 mpg [message #172557 is a reply to message #172540] Fri, 08 June 2012 08:28 Go to previous messageGo to previous message
larry.whisler is currently offline  larry.whisler   United States
Messages: 356
Registered: August 2005
Karma: 8
Senior Member
Chr$ wrote on Fri, 08 June 2012 00:58

I'll never get 10. Hell, I'll probably never get 8. I keep my foot in the carb too damn much.

Seriously, I think I got around 10 on the way down to Tucson taking it easy. I did 75-80 on the way back, so no way... Rolling Eyes


Chri$
What kind of mileage could you get on that new stretch of
Texas toll road with a proposed 85 MPH speed limit?

Might have to invert the formula to gal per mile..lol
Previous Topic: Heater Box Debris
Next Topic: [GMCnet] RV storage
Goto Forum:
  


Current Time: Fri Apr 19 13:40:10 CDT 2024

Total time taken to generate the page: 0.01208 seconds