| |
Click on image for the lowdown. 
====
| | | Forums66 Topics128,023 Posts1,055,370 Members48,420 | | Most Online14,466
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!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Aug 2014 Posts: 15 New Guy | | New Guy Joined: Aug 2014 Posts: 15 | How can I tell what type of trans is in my 1950 6400? | | | | | Joined: Mar 2012 Posts: 211 'Bolter | | 'Bolter Joined: Mar 2012 Posts: 211 | | | | | | Joined: Nov 2006 Posts: 2,544 Shop Shark | | Shop Shark Joined: Nov 2006 Posts: 2,544 | It would have been built with a SM420 4 speed. | | | | | Joined: Jan 2011 Posts: 32 New Guy | | New Guy Joined: Jan 2011 Posts: 32 | Should have an SM420 in it if stock. This is a 4 speed, very low 1st gear trans. Look at the passenger side of the trans, it should have a PTO or PTO plate in about the middle of the trans. If it has a PTO on the driver's side down low, you may have an SM465, another well built trans.
1949 1.5 Ton 4400, 1969 c10, 1989 c1500, 1990 K2500, 2010 C1500 Crew
| | | | | Joined: Aug 2014 Posts: 15 New Guy | | New Guy Joined: Aug 2014 Posts: 15 | Should have an SM420 in it if stock. This is a 4 speed, very low 1st gear trans. Look at the passenger side of the trans, it should have a PTO or PTO plate in about the middle of the trans. If it has a PTO on the driver's side down low, you may have an SM465, another well built trans. this tranny has a plate on the passenger side but also has a pto on drivers side. Is it certain it is a 465? Also I have read that most bell housing wil marry this trans with a 350. Do you know if it is true or not. | | |
|
|
| |
