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Old 11-15-2015, 10:39 AM   #1
LSGarage
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Front Drive Shaft Question

Lets see where to start. I'm working on my '67 GMC K-1500, 305 V-6, SM465 mated to a T-221 transfer case. Truck was an OEM drum brake truck. I got it with a (I think) '71 Chev disc brake front axle.

I just put my trans and transfer case back in the truck. Installed the front drive shaft and noticed that there is no spline exposed (see picture). I know that I need to shorten the drive shaft length. My question is should I shorten the shaft tube or could I get away with shortening the yoke that attaches to the front differential. The spline (on the shaft its self) is around 6" long but only 2 1/4" at the end has gear teeth cut into it. The rest of it is under cut.

Additionally I have no chassis or body lifts on this truck and I'm not going to use the 4WD for anything else other than getting around in the snow.
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Old 11-15-2015, 01:27 PM   #2
61K10
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Re: Front Drive Shaft Question

the two axles should be the same, Dana 44's. is the slip shaft bottomed out? you should have very little movement in the D/shaft. I would trim it if it was me. the experts will chime in with their fix.
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Old 11-15-2015, 02:53 PM   #3
LSGarage
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Re: Front Drive Shaft Question

Yea the slip shaft is bottomed out. Before I had the T-case rebuilt it was pushing a bearing out of the case. I originally thought it was because it has a 3:42 in the rear & 4:11 up front. Now I think the bear issue may have been caused by front drive shaft
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67 GMC 4x4, 305 V-6, 4-spd
86 S-10, 2.8 2WD LWB
01 Suburban (family hauler)
13 Honda CRV (wife's wheels)
03 Malibu (daughter’s car)
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Old 11-16-2015, 11:24 AM   #4
ryanroo
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Re: Front Drive Shaft Question

it needs an inch and a half or so of exposed slip shaft. i would take the drive line to a driveline shop with a good reputation and have the tube shortened. its not a really difficult operation and should require no parts as long as everything is in good shape. maybe an hour of labor.
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Old 11-16-2015, 01:43 PM   #5
LSGarage
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Re: Front Drive Shaft Question

Thanks, ryanroo, for your response! Just needed a little reassurance about how to fix this.
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67 GMC 4x4, 305 V-6, 4-spd
86 S-10, 2.8 2WD LWB
01 Suburban (family hauler)
13 Honda CRV (wife's wheels)
03 Malibu (daughter’s car)
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Old 11-17-2015, 04:30 AM   #6
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Re: Front Drive Shaft Question

If you don't have a local drive line shop try a big diesel shop most can make/work on a drive shaft.
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Old 11-18-2015, 06:14 AM   #7
LSGarage
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Re: Front Drive Shaft Question

Thanks, andrewmp6, that's looks like the way I have to around here.
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01 Suburban (family hauler)
13 Honda CRV (wife's wheels)
03 Malibu (daughter’s car)
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