| Short trip report [message #307561] |
Wed, 21 September 2016 14:49  |
Hal StClair
Messages: 971
Registered: March 2013
Location: Rio Rancho NM
Karma: -12
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Senior Member |
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Just thought I'd give a short report on a quick trip we made. Took the GMC up to Denver from Rio Rancho, 450 miles each way of up and down country for sure. Three passes over 7300' including Raton Pass @7800. Anyway not the best terrain for good economy running. We ran up pulling an empty tow dolly and returned with a 3300 lb car on the dolly. Ran 63/64 up, 61/62 back with only a little bad wind.
Averaged 13.79 mpg round trip with the new 3.42 (vs old 3.73) gear set. The overall ratio works out to about a 2.76 in OD. I was surprised that it seemed to pull just as well with the taller gear but is a lot nicer to live with-quieter than the 403 we think. Also nice to be able to run 900+ miles between fuel stops if desired to buy fuel at the least expensive location. At $1.98 here we are $.21 cheaper than anywhere on the trip. As if a $12.00 savings on 63 gallons is going to pay for the diesel swap.... 
Hal
"I enjoy talking to you. Your mind appeals to me. It resembles my own mind, except you happen to be insane."
1977 Royale 101348,
1977 Royale 101586, Diesel powered,
1974 Eagle Bus 45',w/slideout,
Rio Rancho, NM
[Updated on: Wed, 21 September 2016 15:23] Report message to a moderator |
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| Re: [GMCnet] Short trip report [message #307565 is a reply to message #307561] |
Wed, 21 September 2016 14:57  |
sgltrac
Messages: 2797
Registered: April 2011
Karma: 1
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Senior Member |
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I don't see how you could possibly be getting the mileage you state while
pulling ANYTHING and climbing grades. Must be a math problem somewhere
Sully
77 Royale
Seattle
On Wednesday, September 21, 2016, Hal StClair
wrote:
> Just thought I'd give a short report on a quick trip we made. Took the GMC
> up to Denver from Rio Rancho, 450 miles each way of up and down country for
> sure. Three passes over 7300' including Raton Pass @7800. Anyway not the
> best terrain for good economy running. We ran up pulling an empty tow dolly
> and returned with a 3300 lb car on the dolly. Ran 63/64 up, 61/62 back
> with only a little bad wind.
> Averaged 13.79 mpg round trip with the new 3.42 (vs old 3.73) gear set.
> The overall ratio works out to about a 2.76 in OD. I was surprised that it
> seemed to pull just as well with the taller gear but is a lot nicer to
> live with-quieter than the 403 we think. Also nice to be able to run 700+
> miles
> between fuel stops if desired to buy fuel at the least expensive location.
> At $1.98 here we are $.21 cheaper than anywhere on the trip. As if a
> $12.00 savings on 63 gallons is going to pay for the diesel swap.... :lol:
> Hal
> --
> 1977 Royale 101348,
>
> 1977 Royale 101586, Diesel powered,
>
> 1974 Eagle Bus 45',w/slideout
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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| Re: [GMCnet] Short trip report [message #307568 is a reply to message #307565] |
Wed, 21 September 2016 15:00 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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Diesel.
Jim Hupy
On Sep 21, 2016 12:58 PM, "Todd Sullivan" wrote:
> I don't see how you could possibly be getting the mileage you state while
> pulling ANYTHING and climbing grades. Must be a math problem somewhere
>
> Sully
> 77 Royale
> Seattle
>
> On Wednesday, September 21, 2016, Hal StClair >
> wrote:
>
>> Just thought I'd give a short report on a quick trip we made. Took the
> GMC
>> up to Denver from Rio Rancho, 450 miles each way of up and down country
> for
>> sure. Three passes over 7300' including Raton Pass @7800. Anyway not the
>> best terrain for good economy running. We ran up pulling an empty tow
> dolly
>> and returned with a 3300 lb car on the dolly. Ran 63/64 up, 61/62 back
>> with only a little bad wind.
>> Averaged 13.79 mpg round trip with the new 3.42 (vs old 3.73) gear set.
>> The overall ratio works out to about a 2.76 in OD. I was surprised that
> it
>> seemed to pull just as well with the taller gear but is a lot nicer to
>> live with-quieter than the 403 we think. Also nice to be able to run 700+
>> miles
>> between fuel stops if desired to buy fuel at the least expensive
> location.
>> At $1.98 here we are $.21 cheaper than anywhere on the trip. As if a
>> $12.00 savings on 63 gallons is going to pay for the diesel swap....
> :lol:
>> Hal
>> --
>> 1977 Royale 101348,
>>
>> 1977 Royale 101586, Diesel powered,
>>
>> 1974 Eagle Bus 45',w/slideout
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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| Re: [GMCnet] Short trip report [message #307569 is a reply to message #307568] |
Wed, 21 September 2016 15:03 |
sgltrac
Messages: 2797
Registered: April 2011
Karma: 1
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Senior Member |
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Aha. Guess I should have read it harder.
Sully
On Wednesday, September 21, 2016, James Hupy wrote:
> Diesel.
> Jim Hupy
> On Sep 21, 2016 12:58 PM, "Todd Sullivan" > wrote:
>
>> I don't see how you could possibly be getting the mileage you state while
>> pulling ANYTHING and climbing grades. Must be a math problem somewhere
>>
>> Sully
>> 77 Royale
>> Seattle
>>
>> On Wednesday, September 21, 2016, Hal StClair eaglefabrication1@gmail.com
>>>
>> wrote:
>>
>>> Just thought I'd give a short report on a quick trip we made. Took the
>> GMC
>>> up to Denver from Rio Rancho, 450 miles each way of up and down country
>> for
>>> sure. Three passes over 7300' including Raton Pass @7800. Anyway not
> the
>>> best terrain for good economy running. We ran up pulling an empty tow
>> dolly
>>> and returned with a 3300 lb car on the dolly. Ran 63/64 up, 61/62 back
>>> with only a little bad wind.
>>> Averaged 13.79 mpg round trip with the new 3.42 (vs old 3.73) gear set.
>>> The overall ratio works out to about a 2.76 in OD. I was surprised that
>> it
>>> seemed to pull just as well with the taller gear but is a lot nicer to
>>> live with-quieter than the 403 we think. Also nice to be able to run
> 700+
>>> miles
>>> between fuel stops if desired to buy fuel at the least expensive
>> location.
>>> At $1.98 here we are $.21 cheaper than anywhere on the trip. As if a
>>> $12.00 savings on 63 gallons is going to pay for the diesel swap....
>> :lol:
>>> Hal
>>> --
>>> 1977 Royale 101348,
>>>
>>> 1977 Royale 101586, Diesel powered,
>>>
>>> 1974 Eagle Bus 45',w/slideout
>>>
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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