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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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#59993 05/04/2006 12:10 AM | Joined: Jan 2004 Posts: 103 Shop Shark | | Shop Shark Joined: Jan 2004 Posts: 103 | The 1940 suburban 1/2 ton has a 4 speed with granny gear and a lever for reverse it is a non synchro transmission torque tube driveline. Is there a syncro 4 speed that will bolt in without mods? The transmission is in need of rebuild or replace. thanks for addvice | | |
#59994 05/04/2006 1:17 AM | Joined: Nov 2001 Posts: 481 Shop Shark | | Shop Shark Joined: Nov 2001 Posts: 481 | I'm not aware of any syncro 4 speed that's a simple bolt-in. The easiest way to get a syncro transmission is to use a 39-46 three speed which has syncromesh on second and third. The only difference in appearance from the cab is no reverse lock-out on the 3 speed. | | |
#59995 05/04/2006 4:06 AM | Joined: Oct 2003 Posts: 363 Member | | Member Joined: Oct 2003 Posts: 363 | I just did a swap into my 39 using an adapter plate from buffalo enterprises. I have an open rear. Maybe you could pull this off with a later 1/2 ton TT SM420 and later bellhousing with pedal mounts welded on. | | |
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