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| Re: [GMCnet] GMC Driving fundamentals question [message #295318 is a reply to message #295312] |
Tue, 09 February 2016 20:20   |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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Nope that is the long down hill into Las Vegas
On Tuesday, February 9, 2016, Matt Colie wrote:
> Mr ERFisher wrote on Tue, 09 February 2016 18:58
>> Kick down has killed 3 engines that I know of
>> -passing down hill
>> --
>> Gene Fisher -- 74-23,77PB/ore/ca
>> "Give a man a fish; you have fed him for today --- give him a URL and
>
> That, as my father would have said, is a "Loose nut behind the wheel."
>
> Matt
> --
> Matt & Mary Colie - Members GMCMI, GMCES
> '73 Glacier 23 - Still Loving OE Rear Drum Brake with Applied Control Arms
> SE Michigan - Twixt A2 and Detroit
>
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--
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
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| Re: [GMCnet] GMC Driving fundamentals question [message #295565 is a reply to message #295273] |
Mon, 15 February 2016 15:11 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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Senior Member |
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sgltrac wrote on Tue, 09 February 2016 08:40Doesn't the vacuum mechanism on the trans downshift the trans when a
specified amount of vacuum (adjusted at the mechanism) is present while
also telling the trans to shift up as well?
Sully
77 royale
Seattle
On Tuesday, February 9, 2016, Ken Burton wrote:
> I have a Manny transmission and my kick down switch works as designed by
> GM.
>
> That said, I have found and corrected many out of adjustment kick down
> switches that do then do not work. It is a simple, no tool, 10 second fix
> to
> bend the accelerator pedal rod back in to position so the switch functions
> correctly.
> --
> Ken Burton - N9KB
> 76 Palm Beach
> Hebron, Indiana
>
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3 things control the up and downshifts: the modulator, the governor and the kickdown switch. When they are unmolested, they do a great job of controlling when and how the shifts happen.
Bob de Kruyff
78 Eleganza
Chandler, AZ
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| Re: [GMCnet] GMC Driving fundamentals question [message #295566 is a reply to message #295318] |
Mon, 15 February 2016 15:28 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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Senior Member |
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""Nope that is the long down hill into Las Vegas
On Tuesday, February 9, 2016, Matt Colie wrote:
> Mr ERFisher wrote on Tue, 09 February 2016 18:58
>> Kick down has killed 3 engines that I know of
>> -passing down hill
>> --
>> Gene Fisher -- 74-23,77PB/ore/ca
>> "Give a man a fish; you have fed him for today --- give him a URL and
>
""
So how would that blow an engine?? Even with the kick down activated, the trans will still upshift when the maximum RPM has been reached. In fact an unmolested trans will upshift even if the shift lever is still manually placed in a lower gear.
Bob de Kruyff
78 Eleganza
Chandler, AZ
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| Re: GMC Driving fundamentals question [message #295570 is a reply to message #293882] |
Mon, 15 February 2016 16:18 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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Didn't Beuhler (sp) turn these engines up to obscene speeds in jet boats? And they kinda survived.
--johnny
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
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| Re: [GMCnet] GMC Driving fundamentals question [message #295667 is a reply to message #295571] |
Wed, 17 February 2016 20:30 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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Senior Member |
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James Hupy wrote on Mon, 15 February 2016 15:39Anything over 6000 rpm is pushing your luck with a 455. 7000 with a 403 is
hand grenade zone. Don't ask how much it cost me to learn that.
Jim Hupy
Salem, Or
78 GMC ROYALE 403
On Feb 15, 2016 2:19 PM, "Johnny Bridges" wrote:
> Didn't Beuhler (sp) turn these engines up to obscene speeds in jet boats?
> And they kinda survived.
>
> --johnny
> --
> '76 23' transmode Norris upfit
> Braselton, Ga.
>
> "Sometimes I wonder what tomorrow's gonna bring when I think about my
> dirty life and times" --Warren Zevon
>
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I don't see how you can reach those rpm's unless your transmission has been modified. In first or second the trans will upshift before that regardless of what the gear shift position. If it's in 3rd you may be ready for take-off !
Bob de Kruyff
78 Eleganza
Chandler, AZ
[Updated on: Wed, 17 February 2016 20:30] Report message to a moderator |
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| Re: [GMCnet] GMC Driving fundamentals question [message #295668 is a reply to message #295571] |
Wed, 17 February 2016 20:31 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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James Hupy wrote on Mon, 15 February 2016 15:39Anything over 6000 rpm is pushing your luck with a 455. 7000 with a 403 is
hand grenade zone. Don't ask how much it cost me to learn that.
Jim Hupy
Salem, Or
78 GMC ROYALE 403
On Feb 15, 2016 2:19 PM, "Johnny Bridges" wrote:
> Didn't Beuhler (sp) turn these engines up to obscene speeds in jet boats?
> And they kinda survived.
>
> --johnny
> --
> '76 23' transmode Norris upfit
> Braselton, Ga.
>
> "Sometimes I wonder what tomorrow's gonna bring when I think about my
> dirty life and times" --Warren Zevon
>
> _______________________________________________
> GMCnet mailing list
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I don't see how you can reach those rpm's unless your transmission has been modified. In first or second the trans will upshift before that regardless of what the gear shit position. If it's in 3rd you may be ready for take-off !
Bob de Kruyff
78 Eleganza
Chandler, AZ
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| Re: [GMCnet] GMC Driving fundamentals question [message #295670 is a reply to message #295668] |
Wed, 17 February 2016 21:01 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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Olds engines never approach those rpm's in a motor home. They sure do in
inboard boats equipped with propellers as well as jet drives. Also in
manual transmission equipped cars. I built 455 Olds engines for ski boats
and gill netters and cars long before I ever worked on a GMC Motor Home.
That is where I learned what will break one of these engines.
Jim Hupy
Salem, Or
78 GMC ROYALE 403
On Feb 17, 2016 6:32 PM, "Bob de Kruyff" wrote:
> James Hupy wrote on Mon, 15 February 2016 15:39
>> Anything over 6000 rpm is pushing your luck with a 455. 7000 with a 403
> is
>> hand grenade zone. Don't ask how much it cost me to learn that.
>> Jim Hupy
>> Salem, Or
>> 78 GMC ROYALE 403
>> On Feb 15, 2016 2:19 PM, "Johnny Bridges" wrote:
>>
>>> Didn't Beuhler (sp) turn these engines up to obscene speeds in jet
> boats?
>>> And they kinda survived.
>>>
>>> --johnny
>>> --
>>> '76 23' transmode Norris upfit
>>> Braselton, Ga.
>>>
>>> "Sometimes I wonder what tomorrow's gonna bring when I think about my
>>> dirty life and times" --Warren Zevon
>>>
>>> _______________________________________________
>>> 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
>
> I don't see how you can reach those rpm's unless your transmission has
> been modified. In first or second the trans will upshift before that
> regardless
> of what the gear shit position. If it's in 3rd you may be ready for
> take-off !
> --
> Bob de Kruyff
> 78 Eleganza
> Chandler, AZ
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
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