Home » Public Forums » GMCnet » [GMCnet] Manifolds vs. Headers 455 Olds
| [GMCnet] Manifolds vs. Headers 455 Olds [message #137693] |
Fri, 05 August 2011 23:03  |
glwgmc
Messages: 1014
Registered: June 2004
Karma: 10
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Hi Jon,
Based on what my son found when he purchased a GMC 3500 truck with that engine, don't expect any greater fuel economy. It could turn out to be worse......
Jerry
Jerry and Sharon Work
78 Royale rear lounge
Kerby, OR
glwork@mac.com
http://jerrywork.com
541-592-5360
Message: 14
Date: Fri, 05 Aug 2011 15:51:35 -0500
From: Jon Payne <embrep@sbcglobal.net>
Subject: Re: [GMCnet] Manifolds vs. Headers 455 Olds
To: gmclist@temp.gmcnet.org
Message-ID: <2199c.4e3c57d7@gmc.mybirdfeeder.net>
Content-Type: text/plain; charset="ISO-8859-15"
Speaking of Dave's 8.1 Vortec, does anyone know when/if he will ever offer some kind of kit? I have seen some pictures of the engine as it was ready to be installed and after installation in the subframe and man it looks like it could of rolled off the production line that way. Truly a profession installation.
I'm sure if he does offer a kit it will be costly but worth it considering the quality. I understand he starts with an complete "drop out engine" from a salvage yard and the few that he has have low mileage.
I have seen some low mileage "drop out engine" on ebay from $2500 to $3500. Man, it would be nice to have a 8.1L Vortec!
Jon
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Jon Payne
76 Palm Beach
Westfield,IN
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Jerry & Sharon Work
78 Royale
Kerby, OR
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| Re: [GMCnet] Manifolds vs. Headers 455 Olds [message #137783 is a reply to message #137702] |
Sat, 06 August 2011 18:14  |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
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On Fri, Aug 5, 2011 at 10:17 PM, Rob Mueller <robmueller@iinet.net.au> wrote:
> Jerry,
>
> IIRC Dave noted that his mileage was normally as good as an Olds 455 and a
> bit better at times.
>
> Normal Olds Mileage as defined by Mr. ERF "8 - 10 mpg."
>
> Regards,
> Rob M.
> Sydney, Australia
> AUS '75 Avion-The Blue Streak TZE365V100428
> USA '75 Avion-Double Trouble TZE365V100426
>
>
> -----Original Message-----
> From: Jerry
>
> Hi Jon,
>
> Based on what my son found when he purchased a GMC 3500 truck with that
> engine, don't expect any greater fuel economy. It could turn out to be
> worse......
>
> Jerry
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] Manifolds vs. Headers 455 Olds [message #137819 is a reply to message #137783] |
Sun, 07 August 2011 01:57 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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| jimk wrote on Sat, 06 August 2011 18:14 |
On Fri, Aug 5, 2011 at 10:17 PM, Rob Mueller <robmueller@iinet.net.au> wrote:
> Jerry,
>
> IIRC Dave noted that his mileage was normally as good as an Olds 455 and a
> bit better at times.
>
> Normal Olds Mileage as defined by Mr. ERF "8 - 10 mpg."
>
> Regards,
> Rob M.
> Sydney, Australia
> AUS '75 Avion-The Blue Streak TZE365V100428
> USA '75 Avion-Double Trouble TZE365V100426
>
>
> -----Original Message-----
> From: Jerry
>
> Hi Jon,
>
> Based on what my son found when he purchased a GMC 3500 truck with that
> engine, don't expect any greater fuel economy. It could turn out to be
> worse......
>
> Jerry
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
|
I know Jim had something to say but I be darn if I can figure out what it was.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] Manifolds vs. Headers 455 Olds [message #137967 is a reply to message #137819] |
Sun, 07 August 2011 23:24 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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The reason why the mileage can decrease is in the way you tend to
drive once one has more performance.
I for one can say that there is a gain in performance and mileage.
The Doug's headers are now designed with big opening at the flange.
Thorly will be following suite with larger opening.
On Sat, Aug 6, 2011 at 11:57 PM, Ken Burton <n9cv@comcast.net> wrote:
>
>
> jimk wrote on Sat, 06 August 2011 18:14
>> On Fri, Aug 5, 2011 at 10:17 PM, Rob Mueller <robmueller@iinet.net.au> wrote:
>> > Jerry,
>> >
>> > IIRC Dave noted that his mileage was normally as good as an Olds 455 and a
>> > bit better at times.
>> >
>> > Normal Olds Mileage as defined by Mr. ERF "8 - 10 mpg."
>> >
>> > Regards,
>> > Rob M.
>> > Sydney, Australia
>> > AUS '75 Avion-The Blue Streak TZE365V100428
>> > USA '75 Avion-Double Trouble TZE365V100426
>> >
>> >
>> > -----Original Message-----
>> > From: Jerry
>> >
>> > Hi Jon,
>> >
>> > Based on what my son found when he purchased a GMC 3500 truck with that
>> > engine, don't expect any greater fuel economy. Â It could turn out to be
>> > worse......
>> >
>> > Jerry
>>
>>
>> Jim Kanomata
>> Applied/GMC, Fremont,CA
>> jimk@appliedairfilters.com
>> http://www.appliedgmc.com
>> 1-800-752-7502
>
> I know Jim had something to say but I be darn if I can figure out what it was.
> --
> Ken Burton - N9KB
> 76 Palm Beach
> Hebron, Indiana
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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