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#28041 08/20/2003 3:38 AM | Joined: Oct 2002 Posts: 69 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2002 Posts: 69 | ok, i was under the 53 a couple days ago and upon closeer inspection i have found that the four speed in the truck isnt an sm420 like i assumed would be,
what else could it have been in 53 in the 6400 16,000GVW trucks ? it is cast iron case and it has at least one PTO because its a grain dump truck.
are no marking on the shift knob.
thanks for anything
Randy the easter wabbit ! -here to help fellow enthusiasts as best as possible  parting some vehicles, 54 ford truck 57, chevy 210, 69 fairlane coupe HT and others, | | |
#28042 08/20/2003 3:47 AM | Joined: Nov 2000 Posts: 427 'Bolter | | 'Bolter Joined: Nov 2000 Posts: 427 | From the factory only the SM420 was offered from my info.
There were aftermarket trannies, but I believe that they were all offered as a secondary transmission behind the SM420.
The PTO setup was generally a bolt-on to the side of the SM420. Are you sure the transmission is not just an SM420 with the PTO add on? | | |
#28043 08/20/2003 3:56 AM | Joined: Oct 2002 Posts: 69 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2002 Posts: 69 | no, it just looks small compared to an actual sm420, the pto part is normal to me, the "420" isnt, hmm...
hmm..
thanks
Randy the easter wabbit ! -here to help fellow enthusiasts as best as possible parting some vehicles, 54 ford truck 57, chevy 210, 69 fairlane coupe HT and others, | | |
#28044 08/20/2003 8:29 AM | Joined: Oct 2001 Posts: 3,458 Extreme Gabster | | Extreme Gabster Joined: Oct 2001 Posts: 3,458 | The Sm-420 is actually a pretty small transmission. It is kind of tall and skinny. If you have reverse to the left and back, chances are that is what it is. If it has a reverse lockout lever then it is one of the earlier crashbox 4 speeds.
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#28045 08/20/2003 2:02 PM | Joined: Dec 2000 Posts: 112 Shop Shark | | Shop Shark Joined: Dec 2000 Posts: 112 | Check out www.novak-adapt.com go to top of page and click on "Knowledge base" then scroll down to transmissions...they have picture's of manual transmissions...good site.
1946 chevy 1/2 ton panel
1937 ford coupe
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#28046 08/20/2003 6:02 PM | Joined: Oct 2002 Posts: 69 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2002 Posts: 69 | Originally posted by jdhoward: Check out www.novak-adapt.com
go to top of page and click on "Knowledge base"
then scroll down to transmissions...they have
picture's of manual transmissions...good site.nice, will have to look under the truck again, normally i can identify a 420 and definitely a 465, but this one under the truck looks like neither, maybe its cuz of the no ribs on case casting 47-53 style thats throwing me off. it just looks way different than a 420 or even 465(of course) and reverse is on left like a 420 is supposed ot have, did any other 4 speed have left hand reverse ? thanks
Randy the easter wabbit ! -here to help fellow enthusiasts as best as possible parting some vehicles, 54 ford truck 57, chevy 210, 69 fairlane coupe HT and others, | | |
#28047 08/20/2003 10:44 PM | Joined: Feb 2000 Posts: 268 Shop Shark | | Shop Shark Joined: Feb 2000 Posts: 268 | I got all kinds of pics on the SM-420 right here; GMC Transmission Data | | |
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