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Old September 28th, 2016, 02:41 AM
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jimjaz jimjaz is offline
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Join Date: Jan 2013
Location: Tempe AZ
Truck: 1963 K-1000 Sub, 1963 C-1000 Sub, 1965 C-1000 Sub
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Default Re: Changing into 1st/reverse while fully stopped

I agree with David and Steve on this one-
If you are stopped and not rolling, then pulling the column shifter to engage 1st gear you should not be grinding any gears if your clutch is adjusted properly. I am not familiar with 61's with a column shift if you have the dual master cylinder making your clutch hydraulic, but whether it is hydraulic or mechanical, you can adjust the clutch so that it fully disengages from the flywheel. If you are not fully disengaged, then your clutch plate will be rubbing (some) and this will cause your transmission to spin. This is what I think is going on. When you are completely stopped, transmission in neutral, and you step on the clutch, how far does the pedal travel before you feel some resistance other than the return spring that is up underneath the dash? If it is more than a couple of inches, adjust your clutch rod nut clockwise (like turning a screw clockwise) there should be two nuts so you will need to break these free of each other and adjust the nut that rests up against the clutch release fork clockwise a few full turns, then try it again. Once you get it set where you think you want it, then you can jam the rear nut up against the front nut to keep it locked in and stationary. Just be careful when doing this (you are not going to hurt anything unless you get it adjusted and then find out that you can't climb a hill anymore because the clutch is slipping on the flywheel- your engine RPM's are cranking, but you are slowing down) - this will cause you to burn up your clutch over time and possibly warp your flywheel a bit, sort of like disc brake rotors that are not true so when you brake the vehicle creates a shimmy because the rotors up front are warped.

Since your transmission is not a 1st gear synchro, all this really means is that you can't pull your tree lever into 1st gear if you are rolling at all. If this is all it is, then don't go chasing the clutch adjustment.
Let us know what you find out.
Jim
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Jim Jantzen
Tempe AZ

63 GMC K1000 Sub restored original
63 GMC C1000 Sub original
65 GMC C1000 Sub OEM modified
72 GMC 1500 Super Custom SWB original
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