Home » Public Forums » GMCnet » [GMCnet] Clasco on the road
| [GMCnet] Clasco on the road [message #211898] |
Sat, 22 June 2013 19:44  |
glwgmc
Messages: 1014
Registered: June 2004
Karma: 10
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Clasco put her nose in the Pacific this morning ending our westerly leg and we are now headed north along the coast on our way to home in Kerby, OR. We elected to cross both the AZ and CA deserts in the cool of the very early morning so it has been a long day. We are holed up with the roof air on in the Elks Club RV space in Santa Barbara, CA. All systems remain go and the coach is performing spectacularly well so far. We found the dash air no longer blowing cold today as it has all the way across the country. May just be low on charge. I will investigate when we get to our son's house in Santa Cruz, CA, tomorrow. The leak under the shower appears to be a small leak around the drain which should be "easy" to fix. We are about 2800 miles into the trip now with about another 1000 to go. This classy old lady has really earned our respect so far. The question is whether to regear it now or not. It is stock 3.07 now and so far has only needed second once or twice but we
have yet to get into steep climbs. I am leaning towards 3.55 thinking 3.7 might be a bit too much as we don't tow. I would appreciate any of your guidance comments and experiences.
Jerry
Jerry Work
The Dovetail Joint
Fine furniture designed & hand crafted
in the 1907 former Masonic Temple building
in historic Kerby, OR
Http://jerrywork.com
541-592-5360
Cell 541-499-1027
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Jerry & Sharon Work
78 Royale
Kerby, OR
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| Re: [GMCnet] Clasco on the road [message #211901 is a reply to message #211898] |
Sat, 22 June 2013 20:31  |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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Senior Member |
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Jerry,
Although the lower geared final drive is a good idea, I don't know that is strictly necessary if you never tow. I have a 3.70 LSD in our coach because we almost always tow. I still have to gear down for steep grades. For me, the advantage of the 3.55 or 3.70 is to get the transmission to a more efficient RPM sooner with less slippage of the torque converter. A 3.55 or 3.70 will NOT mean no more downshifting on hills.
The lower gears will get you off the line quicker and, depending on what speed you like to drive, keep you in the max torque range of your engine better. I usually drive at around 62 - 65 MPH and find that fast enough most of the time.
It sounds like you got a really good coach there. Congratulations. Hope to see you in the SW again soon. Hopefully you can join us at another Saguaro Jetset rally sometime.
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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| Re: [GMCnet] Clasco on the road [message #211912 is a reply to message #211903] |
Sat, 22 June 2013 23:41 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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I learned from people like Tom Hampton,Marvin Peck and others that whether
your towing or not, the 3.70 is not over gearing the coach.
A comparable coach of the SOB variety run 4,10 ratio.
Even on my 540 Cad, I do best in mileage with a 3.70.
It is a free country so you people can do what you want, but this is what I
know from the feedback I have received from our customers.
On Sat, Jun 22, 2013 at 6:57 PM, Dan Borlase <bord@shaw.ca> wrote:
>
>
> Jerry...if you are running a 403 cid, then I would strongly recommend
> Jimmy K's 3:70's (remember our little trip from Whistler B.C. east). If
> she's a 455, then 355" are the choice...Dan
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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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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] Clasco on the road [message #211930 is a reply to message #211898] |
Sun, 23 June 2013 06:31 |
Steven Ferguson
Messages: 3447
Registered: May 2006
Karma: 0
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I liked both ratios but since we tow light, I'd have stayed with the 3.55.
At the time, Jim was having problems with the 3.55s not having the pinion
depth set correctly (1998), and after two, I went with the 3.70. But, I
believe that was remedied a long time ago. You'll like the 3.55 Jerry.
Steve
On Sat, Jun 22, 2013 at 5:44 PM, Gerald Work <glwork@mac.com> wrote:
> Clasco put her nose in the Pacific this morning ending our westerly leg
> and we are now headed north along the coast on our way to home in Kerby,
> OR. We elected to cross both the AZ and CA deserts in the cool of the very
> early morning so it has been a long day. We are holed up with the roof air
> on in the Elks Club RV space in Santa Barbara, CA. All systems remain go
> and the coach is performing spectacularly well so far. We found the dash
> air no longer blowing cold today as it has all the way across the country.
> May just be low on charge. I will investigate when we get to our son's
> house in Santa Cruz, CA, tomorrow. The leak under the shower appears to be
> a small leak around the drain which should be "easy" to fix. We are about
> 2800 miles into the trip now with about another 1000 to go. This classy
> old lady has really earned our respect so far. The question is whether to
> regear it now or not. It is stock 3.07 now and so far has only needed
> second once or twice but we
> have yet to get into steep climbs. I am leaning towards 3.55 thinking
> 3.7 might be a bit too much as we don't tow. I would appreciate any of
> your guidance comments and experiences.
>
> Jerry
>
> Jerry Work
> The Dovetail Joint
> Fine furniture designed & hand crafted
> in the 1907 former Masonic Temple building
> in historic Kerby, OR
> Http://jerrywork.com
> 541-592-5360
> Cell 541-499-1027
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Take care,
Steve
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| Re: [GMCnet] Clasco on the road [message #211932 is a reply to message #211930] |
Sun, 23 June 2013 07:03 |
Jim Bounds
Messages: 842
Registered: January 2004
Karma: 0
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Senior Member |
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Good to hear you are there, I felt good about the coach but you just never know. The AC is a bummer, check the pressure in the system, pull off a fill cap and push the center pin, if it has pressure it's probably just in need of a pound. Jump the low pressure switch and see if the compressor comes on, if so spritz it up. Check all the fittings, the system was working so we did not spend much if any time on the system. You gotta draw a line somethere! If there is no pressure at all, check out the hoses running over top of the compressor. I have seen many hoses breeched because of the pully on the compressor rubbibg on the hose overtop of the pulley. All that stuff vibrates loose, drops and there you are, a cut hose.
Good to hear the water leak seems to be the shower drain. If that's it, I would loosen the colar nut, push some sealant under the lip on the top side then tighten it all back together. Good luck working "diver down" through that slot under the dor.
These are small issues when considering how much this coach has been through. Sitting even in an air conditioned warehouse being cared for well still time has it's issues. This machine is truly something from a timetunnel-- a product of a time when CD's were new, TV's were a cube in size and weighed a bloody ton, no ethanol was in the gas, ZDDP was in the oil and Weld was still making rims to fit our coach! The GMC was just hitting the first wall of major repairs , most had somewhere @ 100,000 miles and low mileage meant under 25K, today under 100,000K is considered a creampuff! I had brown hair, believed Tony Bell had the right idea about how to treat a worthy GMC and was headlong in discovering how cool one of these machines could be. We had 24 guys pumping out coach restoratios, we reached 1 each month for 3 months. It was truly a magical time, one that could not have sustained itself. If we could have kept that dream alive who knows
where CLASCO would have been today but that too was not possible.
Jerry is going to have the coach at his upcoming rally, I hope to also be there and to talk about those days, how it all got started and how CLASCO fit into the big plan. We all say these coaches all have the same look and it's true but Jerry's CLASCO coach I feel brought on the look we aspire for today.
Keep that puppy moving, it's what it was meant to do...
Jim Bounds
----------------------
________________________________
From: Steven Ferguson <botiemad11@gmail.com>
To: gmclist@temp.gmcnet.org
Sent: Sunday, June 23, 2013 7:31 AM
Subject: Re: [GMCnet] Clasco on the road
I liked both ratios but since we tow light, I'd have stayed with the 3.55.
At the time, Jim was having problems with the 3.55s not having the pinion
depth set correctly (1998), and after two, I went with the 3.70. But, I
believe that was remedied a long time ago. You'll like the 3.55 Jerry.
Steve
On Sat, Jun 22, 2013 at 5:44 PM, Gerald Work <glwork@mac.com> wrote:
> Clasco put her nose in the Pacific this morning ending our westerly leg
> and we are now headed north along the coast on our way to home in Kerby,
> OR. We elected to cross both the AZ and CA deserts in the cool of the very
> early morning so it has been a long day. We are holed up with the roof air
> on in the Elks Club RV space in Santa Barbara, CA. All systems remain go
> and the coach is performing spectacularly well so far. We found the dash
> air no longer blowing cold today as it has all the way across the country.
> May just be low on charge. I will investigate when we get to our son's
> house in Santa Cruz, CA, tomorrow. The leak under the shower appears to be
> a small leak around the drain which should be "easy" to fix. We are about
> 2800 miles into the trip now with about another 1000 to go. This classy
> old lady has really earned our respect so far. The question is whether to
> regear it now or not. It is stock 3.07 now and so far has only needed
> second once or twice but we
> have yet to get into steep climbs. I am leaning towards 3.55 thinking
> 3.7 might be a bit too much as we don't tow. I would appreciate any of
> your guidance comments and experiences.
>
> Jerry
>
> Jerry Work
> The Dovetail Joint
> Fine furniture designed & hand crafted
> in the 1907 former Masonic Temple building
> in historic Kerby, OR
> Http://jerrywork.com
> 541-592-5360
> Cell 541-499-1027
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Take care,
Steve
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| Re: [GMCnet] Clasco on the road [message #211944 is a reply to message #211912] |
Sun, 23 June 2013 09:52 |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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Senior Member |
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| jimk wrote on Sat, 22 June 2013 21:41 |
I learned from people like Tom Hampton,Marvin Peck and others that whether
your towing or not, the 3.70 is not over gearing the coach.
A comparable coach of the SOB variety run 4,10 ratio.
Even on my 540 Cad, I do best in mileage with a 3.70.
It is a free country so you people can do what you want, but this is what I
know from the feedback I have received from our customers.
Jim Kanomata
Applied/GMC, Fremont,CA
|
Jim is right. Back "in the day" 3/4 ton pickups came from the factory with 4.10 rear end gears and 1-tons came with 4.56s. Both usually had 16" or 16.5 wheels and were 2ooo - 5000 lbs lighter than a GMC.
When I switched to the 3.70 final, I didn't notice any change in fuel economy. I DID notice an improvement in performance, especially at lower speeds. My 455 seems happier at highway speeds as well.
In case I sound like I'm contradicting myself, I have seen arguments that the GMC doesn't need lower gears and it hurts your top end cruising speed. That may be true, but if you want to maximize gas mileage, going really fast is NOT the way to do it. Wind resistance and other forces will greatly diminish fuel economy at speeds over 55 to 60. The engine will run more efficiently at those speeds with a lower ratio final drive.
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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| Re: [GMCnet] Clasco on the road [message #211985 is a reply to message #211944] |
Sun, 23 June 2013 15:35 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Carl,
Your 100% correct in your assessment of what the manufactures use as ratio.
Effective today, We will lower the cost of our 3.70 units to $1,598. Since
we sell 80% 3.70 and 10% 3.55 and 10% 4.10.
Vaccume gage tells the story. Big jump from 3,07 to 3,55 is 3".
3.55 to 3.70 is almost 1" more.
When we came up with the 3.70, 10 years ago, we could not give them away,
now we have even discussed possibly droping the 3,55.
We now ship from Ohio as well as California.
Jim B drove a 3.70 from Floida to Arizon last month and was surprised the
difference over the units he drove the same road with the 3.55.
Small hills or dips in the road, they make a difference.
On Sun, Jun 23, 2013 at 7:52 AM, Carl Stouffer <carljr3b@yahoo.com> wrote:
>
>
> jimk wrote on Sat, 22 June 2013 21:41
> > I learned from people like Tom Hampton,Marvin Peck and others that
> whether
> > your towing or not, the 3.70 is not over gearing the coach.
> > A comparable coach of the SOB variety run 4,10 ratio.
> > Even on my 540 Cad, I do best in mileage with a 3.70.
> > It is a free country so you people can do what you want, but this is
> what I
> > know from the feedback I have received from our customers.
> >
> > Jim Kanomata
> > Applied/GMC, Fremont,CA
>
>
>
> Jim is right. Back "in the day" 3/4 ton pickups came from the factory
> with 4.10 rear end gears and 1-tons came with 4.56s. Both usually had 16"
> or 16.5 wheels and were 2ooo - 5000 lbs lighter than a GMC.
>
> When I switched to the 3.70 final, I didn't notice any change in fuel
> economy. I DID notice an improvement in performance, especially at lower
> speeds. My 455 seems happier at highway speeds as well.
>
> In case I sound like I'm contradicting myself, I have seen arguments that
> the GMC doesn't need lower gears and it hurts your top end cruising speed.
> That may be true, but if you want to maximize gas mileage, going really
> fast is NOT the way to do it. Wind resistance and other forces will
> greatly diminish fuel economy at speeds over 55 to 60. The engine will run
> more efficiently at those speeds with a lower ratio final drive.
> --
> Carl S.
> '75 ex Palm Beach
> Tucson, AZ.
> _______________________________________________
> 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:
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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