| New Engine, Fuel Mileage [message #74708] |
Mon, 22 February 2010 14:20  |
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WD0AFQ
Messages: 7111
Registered: November 2004
Location: Dexter, Mo.
Karma: 207
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Not everyone reads my blog, I don't blame you, so I thought I would post something interesting here about the new engine.
When Miguel test drove the coach he said, "your fan clutch is stuck on". Since I have not driven any other coach I had no clue. It must have been stuck on for at least 2-3 years and I did not know it. Was a small car clutch so not real noisy. I recall when my fuel mileage seemed to have dropped. I checked it and I was getting 6.5 towing the Vibe across Tx. I slowed down and got a little better, but I hate driving 55. I don't really check our mileage but it just seemed like I had to stop for gas more often that trip so I checked it. That was over 2 years ago. Anyway, I had a new clutch and Miguel put it on. Driving the coach, without toad, I was seeing close to 10 mpg when we left Miguel's. I did not notice much less with the Vibe hooked up. I can not give you exacts but I know we are getting much better fuel mileage with this engine and am glad that Miguel noticed the fan was on.
Let me give you the cam specs, while I am at it. I think this is close to stock....gross valve lift-447, intake and exhaust. Duration-.006 @ tappet lift 260. This is a comp cam.
Engine is very responsive and runs really good, of course the Manny Tranny is behind it and we do have the 355 final drive.
We towed the Vib about 200 miles on the 550 mile trip, not hooking up til Quartzsite and unhooking again at Superior.
Just thought this was interesting information and wanted to pass it along. Am certainly glad Miguel heard that clutch.
Dan
3 In Stainless Exhaust Headers
One Ton All Discs/Reaction Arm
355 FD/Quad Bag/Alum Radiator Manny Tran/New eng.
Holley EFI/10 Tire Air Monitoring System
Solarized Coach/Upgraded Windows
Satelite TV/On Demand Hot Water/3Way Refer
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| Re: [GMCnet] New Engine, Fuel Mileage [message #74756 is a reply to message #74708] |
Mon, 22 February 2010 22:25  |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Dan, when we run together from New Mexico to Montgomery, we can see
how our fuel mileage will be.
I'll follow you so that I can get better mileage than when we are by
ourselves as I tend not to drive the limit. In Texas, there is a
stretch where where it is posted 75. that means I can travel 8-10 over
that. I'll Be lucky to get 7mpg pulling the Oldsmobile minivan with
total weight of over 6,000 lbs.
Mybe I better go easy on this trip as I want to surprise Frank Jenkins
at the convenion by having my own coach there and collect the $100
back.
On Mon, Feb 22, 2010 at 12:20 PM, Dan Gregg <gregg_dan@hotmail.com> wrote:
>
>
> Not everyone reads my blog, I don't blame you, so I thought I would post something interesting here about the new engine.
> When Miguel test drove the coach he said, "your fan clutch is stuck on". Since I have not driven any other coach I had no clue. It must have been stuck on for at least 2-3 years and I did not know it. Was a small car clutch so not real noisy. I recall when my fuel mileage seemed to have dropped. I checked it and I was getting 6.5 towing the Vibe across Tx. I slowed down and got a little better, but I hate driving 55. I don't really check our mileage but it just seemed like I had to stop for gas more often that trip so I checked it. That was over 2 years ago. Anyway, I had a new clutch and Miguel put it on. Driving the coach, without toad, I was seeing close to 10 mpg when we left Miguel's. I did not notice much less with the Vibe hooked up. I can not give you exacts but I know we are getting much better fuel mileage with this engine and am glad that Miguel noticed the fan was on.
> Let me give you the cam specs, while I am at it. I think this is close to stock....gross valve lift-447, intake and exhaust. Duration-.006 @ tappet lift 260. This is a comp cam.
> Engine is very responsive and runs really good, of course the Manny Tranny is behind it and we do have the 355 final drive.
> We towed the Vib about 200 miles on the 550 mile trip, not hooking up til Quartzsite and unhooking again at Superior.
> Just thought this was interesting information and wanted to pass it along. Am certainly glad Miguel heard that clutch.
> Dan
> --
> Dan & Teri Gregg
>
> danandteri.blogspot.com
>
>
>
> ///Halon Automatic Fire Extinguishers
> _______________________________________________
> GMCnet mailing list
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--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] New Engine, Fuel Mileage [message #74759 is a reply to message #74756] |
Mon, 22 February 2010 22:45 |
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WD0AFQ
Messages: 7111
Registered: November 2004
Location: Dexter, Mo.
Karma: 207
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Senior Member |
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I hate to tell ya but the speed limit in West Texas is 80 mph. I do not like driving the GMC very fast. I drive using the vacuum gauge. Whatever speed it takes to hold my vacuum up at 14 is the speed I drive. That can vary from 55-65, maybe a little over, depending on conditions. We will have fun no matter what speed we drive. Might need to put both ladies in the same coach though.
Dan
3 In Stainless Exhaust Headers
One Ton All Discs/Reaction Arm
355 FD/Quad Bag/Alum Radiator Manny Tran/New eng.
Holley EFI/10 Tire Air Monitoring System
Solarized Coach/Upgraded Windows
Satelite TV/On Demand Hot Water/3Way Refer
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