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Re: Freeing seized SM420
Rusty Shackleford #1356804 Thu Apr 23 2020 10:24 PM
Joined: Sep 2007
Posts: 408
R
Shop Shark
Here's what the top looks like inside the transmission. Hard to see what lurks underneath. I already have a rebuild kit.

Attached Files
Transmission Inside.jpg (169.19 KB, 149 downloads)
Inside

It's a small world, but I wouldn't want to paint it.
Re: Freeing seized SM420
Rusty Shackleford #1356807 Thu Apr 23 2020 10:33 PM
Joined: Sep 2010
Posts: 501
K
Shop Shark
the top of the internals look good


kevinski 1954 GMC 9300 Welcome to the virtual Garage
Re: Freeing seized SM420
Rusty Shackleford #1356810 Thu Apr 23 2020 10:40 PM
Joined: Mar 2004
Posts: 4,546
M
Shop Shark
Your gears look to be in rough shape to me...the wear pattern surfaces are all pitted.

I'd look for a trans with better gears and put your new kit in that one...

Mike B smile

Re: Freeing seized SM420
Rusty Shackleford #1356818 Thu Apr 23 2020 11:21 PM
Joined: Aug 2001
Posts: 4,269
Shop Shark
I agree with some of the others advice.
Find one in better shape and go with it.
That one will just give you problems on down the road.

Don


Of all the things I've lost in my life, I miss my mind the most!

1967 GMC 9500 Fire Ladder Truck
"The Flag Pole"
In the Stovebolt Gallery
More pix on Photobucket
'46 2-Ton grain truck
'48 3/4-ton grain truck
'50 2-ton flatbed
'54 Pontiac Straight Eight
'70 American LaFrance pumper fire truck.
Re: Freeing seized SM420
Rusty Shackleford #1356838 Fri Apr 24 2020 01:27 AM
Joined: May 2015
Posts: 2,483
K
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
Yep, Make some yard art out of that one. wink


Kevin
First car '29 Ford Special Coupe
#2 - '29 Ford pickup restored from the ground up.
Newest Project - 51 Chevy 3100 work truck. Photos [flickr.com]
Busting rust since the mid-60's
Re: Freeing seized SM420
Rusty Shackleford #1356849 Fri Apr 24 2020 02:08 AM
Joined: Apr 2005
Posts: 8,771
Grease Monkey, Moderator General Truck Talk & Greasy Spoon
Maybe he’s just looking for a challenge to keep occupied during this mess. chug


Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne 4dr 230 I-6 one owner (I’m #2)
‘39 Dodge Businessmans Coupe
USAF 1965-69 Weather Observation Tech (got paid to look at the clouds)


"I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line"! Hug a cop!

Re: Freeing seized SM420
Justhorsenround #1356850 Fri Apr 24 2020 02:23 AM
Joined: May 2015
Posts: 2,483
K
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
Originally Posted by Justhorsenround
Maybe he’s just looking for a challenge to keep occupied during this mess. chug
That could be. We all need something to do. grin


Kevin
First car '29 Ford Special Coupe
#2 - '29 Ford pickup restored from the ground up.
Newest Project - 51 Chevy 3100 work truck. Photos [flickr.com]
Busting rust since the mid-60's
Re: Freeing seized SM420
Rusty Shackleford #1356862 Fri Apr 24 2020 04:21 AM
Joined: Sep 2007
Posts: 408
R
Shop Shark
I've got lots to do. LOL If I'm going to put time into this, I want to be able to use it when I'm done. I'll have to start thinking how an SM420 would look in the yard!


It's a small world, but I wouldn't want to paint it.
Re: Freeing seized SM420
Rusty Shackleford #1356879 Fri Apr 24 2020 12:59 PM
Joined: Mar 2019
Posts: 832
G
Shop Shark
Looking at the pic. The big gear at the bottom is supposed to slide forward. A closer look, looks like the teeth it rides on are all chewed up and wont let it move.

Re: Freeing seized SM420
Rusty Shackleford #1356882 Fri Apr 24 2020 01:23 PM
Joined: Nov 2011
Posts: 2,573
P
Shop Shark
Originally Posted by Rusty Shackleford
I've got lots to do. LOL If I'm going to put time into this, I want to be able to use it when I'm done. I'll have to start thinking how an SM420 would look in the yard!
This is how I recycle some of my old useable Chevy parts... We Stovebolt folks are quite creative, I am certain you can come up with something

In all seriousness, I would hunt for a better gearbox. They are out there.

Attached Files
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