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Old 09-21-2011, 08:37 AM   #1
Caymandave
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Towing

Good Morning All,
I have a 1979 C-20 R-400 Transmission newly rebuilt. Can this truck be towed without disconnecting the driveline or putting a pump on the transmission?
Dave
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Old 09-21-2011, 02:32 PM   #2
hayhauler71
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Re: Towing

Lift it from the rear than none of the drivetrain will be moving
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Old 09-21-2011, 02:39 PM   #3
MARKDTN
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Re: Towing

Only for very short distances.
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Old 09-21-2011, 04:56 PM   #4
Longhorn Man
its all about the +6 inches
 
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Re: Towing

pull an axle shaft from the rear
disconnect the drive shaft and tie it up
tow with the rear lifted
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Old 09-21-2011, 04:58 PM   #5
longhorn70gmc
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Re: Towing

I towed my 3/4 ton Longhorn from El Centro Ca. to San Diego Ca. and removed the drive line and everything was fine. I didn't fry any gears and it was smooth towing all the way. The total time was about two hours and it was about 127 miles.
R/
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1970 GMC Sierra Grande 402/TH400
(Longhorn)14 years and counting rebuild!
1975 (Build) Chevrolet SWB 4X4 350 SB Lifted 6 inches
1970 Ford F250 Ranger 390 BB
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Old 09-21-2011, 04:59 PM   #6
GASoline71
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Re: Towing

R-400 = Turbo Hydramatic 400?

Gary
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My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread.

The Rebuild of Creeping Death after the wreck

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I would never rebuild a 305.
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I love using vacuum gauges as part of the carb tuning process. I hook the gauge to the inside of my garbage can and leave it there.
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Remember Murphys 2nd law of mechanical relationships... "OPPOSING COMPONENTS ATTEMPTING TO OCCUPY THE SAME SPACE, AT THE SAME TIME, GENERALLY END UP OCCUPYING ADJOINING SPACE AT THE BOTTOM OF THE OIL PAN"
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Old 09-21-2011, 05:32 PM   #7
Longhorn Man
its all about the +6 inches
 
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Re: Towing

It actually doesn't matter what he ment... TH400, 700R4... either way, it needs disconnected.
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Old 09-21-2011, 05:34 PM   #8
Longhorn Man
its all about the +6 inches
 
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Re: Towing

The only way around disconnecting anything, and towing it with the rear wheels on the ground, is to fire up the truck, put it in netral, and let it idle the whole time it is being towed. Just hope it doesn't overheat or catch fire or run out of fuel or even just stall.
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