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GKT134 Crashbox 4 speed
#1572260 03/11/2025 11:27 AM
Joined: Feb 2025
Posts: 88
K&Q, VA
H
HawkX66
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'Bolter
HawkX66
'Bolter
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Joined: Feb 2025
Posts: 88
K&Q, VA
I'm not finding a ton of info on the gkt134. Are there any good sources that I haven't found? I want to change the gear oil for starters.

1941 Chevy YR 1.5 ton Dump Truck
Follow this restoration in its DITY Bay
Semper Fi
Re: GKT134 Crashbox 4 speed
HawkX66 #1572265 03/11/2025 12:02 PM
Joined: Sep 2009
Posts: 5,902
Grandview, Missouri
Gdads51 Offline
Gearhead, Stovebolt Tech and Parts Tracker, Mod for Swap Meet and GTT
Gdads51
Gearhead, Stovebolt Tech and Parts Tracker, Mod for Swap Meet and GTT
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Joined: Sep 2009
Posts: 5,902
Grandview, Missouri
On the "Crash Box" oil change info, see the snapshot from a 1942 Chevrolet Army Truck Manual (applies to your transmission) for what I've found to be the best description of a transmission oil change. The regular shop manuals basically just say drain and refill. frown

Here's an original Chevrolet Crash Box 4 Speed Rebuild Filmstrip courtesy of fellow Bolter Brad Allen that you will surely find useful. smile

Others with more experience in the "Crash Box" will most likely come along and chime in soon. smile
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~ Dan
1951 Chevy 3 window 3100
Follow this story in the DITY Gallery
"My Grandpa Carl's Truck and How it Became Mine"
1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver)
US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
Re: GKT134 Crashbox 4 speed
Gdads51 #1572269 03/11/2025 1:00 PM
Joined: Feb 2025
Posts: 88
K&Q, VA
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HawkX66
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HawkX66
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Joined: Feb 2025
Posts: 88
K&Q, VA
Originally Posted by Gdads51
On the "Crash Box" oil change info, see the snapshot from a 1942 Chevrolet Army Truck Manual (applies to your transmission) for what I've found to be the best description of a transmission oil change. The regular shop manuals basically just say drain and refill. frown

Here's an original Chevrolet Crash Box 4 Speed Rebuild Filmstrip courtesy of fellow Bolter Brad Allen that you will surely find useful. smile

Others with more experience in the "Crash Box" will most likely come along and chime in soon. smile
Thank you sir! That rebuild film strip was perfect.

Last edited by HawkX66; 03/11/2025 1:12 PM.
1941 Chevy YR 1.5 ton Dump Truck
Follow this restoration in its DITY Bay
Semper Fi

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