| Re: [GMCnet] Noisy 370 FD [message #230439] |
Wed, 20 November 2013 10:41  |
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hnielsen2
Messages: 1434
Registered: February 2004
Location: Alpine CA
Karma: 0
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Senior Member |
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Same here
We have gotten use to it
Very low whine when we back off or going down a grade
Howard
74 Canyon Lands
Running 3:70 for over six years and 25,000 miles
All is well with my Lord
> On Nov 20, 2013, at 8:32, Todd Sullivan <sgltrac@gmail.com> wrote:
>
> I know Jim told me that the 355 w/ lim slip would make some noise until broken in which it did. Now with close to 1000 miles it's much quieter. Or I've gotten used to it. It had the sound of a hybrid city bus.
>
> Todd Sullivan
>
> Sully
> 77 royale
> Seattle
>
>> On Nov 20, 2013, at 7:37 AM, Howard Nielsen <hnielsen2@cox.net> wrote:
>>
>> Sully
>> Non lim slip here
>> Howard
>>
>> All is well with my Lord
>>
>>
>>
>>> On Nov 20, 2013, at 7:29, Todd Sullivan <sgltrac@gmail.com> wrote:
>>>
>>> Is it a lim slip?
>>>
>>> Todd Sullivan
>>>
>>> Sully
>>> 77 royale
>>> Seattle
>>>
>>>> On Nov 20, 2013, at 7:03 AM, Richard MacDonald <rm1936@gmail.com> wrote:
>>>>
>>>>
>>>>
>>>> Just replaced our 307 FD with a 370 and find the 370 makes a loud whine when decelerating.
>>>> Anyone else have this problem or is it not a problem?
>>>> --
>>>> Richard MacDonald
>>>> Punta Gorda, Florida
>>>> 76 Edgemonte TZE 266V102313
>>>> Howell TBI EBL
>>>>
>>>>
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All is well with my Lord
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| Re: [GMCnet] Noisy 370 FD [message #230445 is a reply to message #230439] |
Wed, 20 November 2013 11:00  |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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Many of the final drives that utilize either a 3:55 or 3:70 gear ratio are
not as quiet INITIALLY as the 3:07. I set up my own gears that I purchased
from Jim K. I know that it was shimmed correctly. It made noise for the
first 2500 miles or so on both acceleration and decelleration but was quiet
at steady state. It still has some noise on decelleration. Rest of the
time, quiet. Jim K said to me that some noise could be possible during
break in, I would agree with his assessment. These noises are common with
new gearsets that are not lap finished. If A PERSON was really ANAL about
it, they could put break in miles on one, then remove it from the coach and
tighten up the shimming on the gears. I personally do not think that it
would be worth the trouble, but your opinions may vary.
Jim Hupy
Salem, Or
78 GMC Royale 403
On Nov 20, 2013 8:41 AM, "Howard Nielsen" <hnielsen2@cox.net> wrote:
> Same here
> We have gotten use to it
> Very low whine when we back off or going down a grade
> Howard
> 74 Canyon Lands
> Running 3:70 for over six years and 25,000 miles
>
> All is well with my Lord
>
>
>
> > On Nov 20, 2013, at 8:32, Todd Sullivan <sgltrac@gmail.com> wrote:
> >
> > I know Jim told me that the 355 w/ lim slip would make some noise until
> broken in which it did. Now with close to 1000 miles it's much quieter. Or
> I've gotten used to it. It had the sound of a hybrid city bus.
> >
> > Todd Sullivan
> >
> > Sully
> > 77 royale
> > Seattle
> >
> >> On Nov 20, 2013, at 7:37 AM, Howard Nielsen <hnielsen2@cox.net> wrote:
> >>
> >> Sully
> >> Non lim slip here
> >> Howard
> >>
> >> All is well with my Lord
> >>
> >>
> >>
> >>> On Nov 20, 2013, at 7:29, Todd Sullivan <sgltrac@gmail.com> wrote:
> >>>
> >>> Is it a lim slip?
> >>>
> >>> Todd Sullivan
> >>>
> >>> Sully
> >>> 77 royale
> >>> Seattle
> >>>
> >>>> On Nov 20, 2013, at 7:03 AM, Richard MacDonald <rm1936@gmail.com>
> wrote:
> >>>>
> >>>>
> >>>>
> >>>> Just replaced our 307 FD with a 370 and find the 370 makes a loud
> whine when decelerating.
> >>>> Anyone else have this problem or is it not a problem?
> >>>> --
> >>>> Richard MacDonald
> >>>> Punta Gorda, Florida
> >>>> 76 Edgemonte TZE 266V102313
> >>>> Howell TBI EBL
> >>>>
> >>>>
> >>>> _______________________________________________
> >>>> 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
> >> _______________________________________________
> >> 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
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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>
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| Re: [GMCnet] Noisy 370 FD [message #230448 is a reply to message #230439] |
Wed, 20 November 2013 11:23 |
captjack
Messages: 271
Registered: February 2010
Location: Sebastopol, California
Karma: 1
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Senior Member |
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Yup,
It's noisy. Jim offered to substitute another, but considering the noise the rest of the coach makes, it's not worth the effort to me. I do wish it were quieter.
Jack Christensen - K6ROW,
'76 Glenbrook/Clasco - "The Silver Bullet",
Sebastopol, CA
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