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12-12-2010, 01:13 AM
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#1 |
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Ex-Minitrucker
Join Date: Apr 2009
Location: Bushnell, FL
Posts: 301
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Granny 4 PTO ?
Anyone using a PTO on the granny four speed to run anything like an air compressor or something besides a hydraulic pump?
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68 C10 LWB 292 4spd 68 C10 LWB 250 3spd Last edited by 68lwb292; 12-12-2010 at 04:22 AM. |
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12-12-2010, 11:52 AM
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#2 |
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Ex-Minitrucker
Join Date: Apr 2009
Location: Bushnell, FL
Posts: 301
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Re: PTO on a SM420 trans ?
Nobody?
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68 C10 LWB 292 4spd 68 C10 LWB 250 3spd |
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12-12-2010, 12:12 PM
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#3 |
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Registered User
 Join Date: Feb 2010
Location: Santa Clara Utah
Posts: 85
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Re: PTO on a SM420 trans ?
I don't know much about it but I would try looking on some of the rockcrawling sites like pirate4x4. Those guys have figured out lots of mods for their rigs.
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1972 K10 4wd Swb 350, 4 speed, 205 t-case Sold 1971 Cheyenne 2wd Lwb 350 4 speed Sold 1972 K5 blazer 4WD auto A/C |
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12-12-2010, 01:53 PM
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#4 |
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Six in a row makes it go...
Join Date: Mar 2009
Location: Vacationland: Maine
Posts: 1,346
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Re: PTO on a SM420 trans ?
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67 C20 long step resto: http://67-72chevytrucks.com/vboard/s...d.php?t=342086 66 C10 long step build: http://67-72chevytrucks.com/vboard/s...=1#post3814790 CT to Alaska in a 67 C10: http://67-72chevytrucks.com/vboard/s...d.php?t=399224 “The height of sophistication is simplicity." - Clare Boothe Luce |
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12-13-2010, 10:36 AM
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#5 |
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Ex-Minitrucker
Join Date: Apr 2009
Location: Bushnell, FL
Posts: 301
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Re: PTO on a SM420 trans ?
thanks for the info guys
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68 C10 LWB 292 4spd 68 C10 LWB 250 3spd |
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12-13-2010, 12:25 PM
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#6 |
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Registered User
Join Date: Jul 2009
Location: La Crosse, WI
Posts: 218
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Re: PTO on a SM420 trans ?
My 67 has a PTO output coming off the transfer case. I also know of a guy who bought a 66 K10 that the former owner used to run a grain auger, this off the transfer case as well. Though not a sm420, there is a Chevy WWII GI 4x4 with pto coming off the transmission to run the front winch. The output looks similar to the sm420.
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Currently truckless, previous trucks: 67 K20, 87 K10 aka V10 & 72 C10 |
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12-13-2010, 01:17 PM
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#7 | |
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Registered User
Join Date: Dec 2008
Location: Yay Area CA
Posts: 2,329
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Re: PTO on a SM420 trans ?
I've installed PTO's for anything from hydraulic to vacuum pumps, is there a specific question you have? You can find most PTO applications at phtruck.com, they don't show the SM420 (old) but here is a pic of an old application book I have, do you know the rotation of the compressor? the PTO will spin clockwise so the compressor would have to have a counterclockwise rotation (looking at the input shaft) or you can use a geared adapter to change the rotation of the PTO.
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1965 GMC shortwide big window 1969 Chevy C20 long (for now) 2005 Silverado 2500HD Crew Cab Quote:
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12-13-2010, 01:18 PM
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#8 |
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Registered User
Join Date: Dec 2010
Location: Paradise, ca
Posts: 295
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Re: PTO on a SM420 trans ?
does the 420 pto turn fast enough to run a compressor? I thought they were a low RPM
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12-13-2010, 02:18 PM
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#9 | ||
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Registered User
Join Date: Dec 2008
Location: Yay Area CA
Posts: 2,329
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Re: PTO on a SM420 trans ?
Quote:
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1965 GMC shortwide big window 1969 Chevy C20 long (for now) 2005 Silverado 2500HD Crew Cab Quote:
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12-13-2010, 05:14 PM
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#10 |
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Ex-Minitrucker
Join Date: Apr 2009
Location: Bushnell, FL
Posts: 301
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Re: PTO on a SM420 trans ?
I don't really have any specific questions about it just running ideas through my head and thought i would see if anyone is doing anything with them. I used to work on firetrucks and we used the PTO to run hydraulic generators anywhere from 8K to 30k.
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68 C10 LWB 292 4spd 68 C10 LWB 250 3spd |
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