HarrysToy
"Get off my lawn!"
Need help who made this 4 speed need model numbers
What 4 speed is this, who makes it?
- Thread starter HarrysToy
- Start date
I believe that is a 71 and up A833. Made by New Process Gear, right here in Syracuse, NY
twostick
Senior Member
That appears to be an overdrive A883.
Kevin
Kevin
The OD versions were allegedly less substantial than the original non-OD versions? Different gear ratios, too, due to the lower-power engines of the "OD" manual trans era. All were still 4spds, just that the original had 1.00:1 for the 4th gear ratio as the 4spd OD version had 4 forward speeds, but the 1st gear ratio was lower and the 4th gear ratio was OD at about .7:1.
Might download a FSM from www.mymopar.com to verify where to look for numbers on the case and such?
Enjoy!
CBODY67
Might download a FSM from www.mymopar.com to verify where to look for numbers on the case and such?
Enjoy!
CBODY67
57fury440
Senior Member
Weren't the OD transmissions aluminum cases?
Xenon
Senior Member
In some of the cars,, yes..
But trucks used cast iron cases..
The truck trans fits just like any 23 spline trans..
As noted, way different gear ratios..
twostick
Senior Member
The biggest problem with the aluminum case trans was the idler counter shaft was not bushed and ran on the aluminum. The shaft would wallow out the case. The iron case one used in pick ups I don't believe had this issue but the overdrive gear didn't like a lot of power ran through it. 1st, 2nd and 3rd are pretty much as good as a regular 833 so if you just use 4th to maintain cruising altitude, the trans can be very reliable. I know a guy that runs one in a restored Hemi 4 speed Roadrunner that has made several trips to Florida and Carlisle with no issues but he never stands on it in 4th.
Kevin
68 4spd Fury
Senior Member
At least the first two years, 75-76, still had the cast iron cases.
68 4spd Fury
Senior Member
The design was essentially the same, the 3-4 gears were switched so it could still be assembled the same way, that's why the 3-4 lever is pointed down and the 1-2 is up. Since the torque of the 225's & 318's was not what the big blocks used to put out some things like the type of steel used and bearings may have changed for cost reasons, not 100% on that as it was before my time at the plant. I never worked on the lines when I was there but it did stay in production at least through the 80's, maybe a bit beyond, in Chrysler and GM light truck applications.
57fury440
Senior Member
I brought it up because that one looks like it is an aluminum case.
70bigblockdodge
Old Man with a Hat
I have a cast iron truck trans with long tailshaft. Most aluminum case trans were for A bodies or F bodies and used short tailshaft with cental shifter mount.
Long tailshaft version has both shifter mounts, forward and aft. I've put over 10,000 miles on mine behind a 440. Just don't sidestep the clutch pedal too much, and no full throttle power shifts. I would not be afraid of that trans behind a big block, just be ware that you will most likely have to replace it with a 5 speed because going back to a 1:1 high gear will not be a option.
Long tailshaft version has both shifter mounts, forward and aft. I've put over 10,000 miles on mine behind a 440. Just don't sidestep the clutch pedal too much, and no full throttle power shifts. I would not be afraid of that trans behind a big block, just be ware that you will most likely have to replace it with a 5 speed because going back to a 1:1 high gear will not be a option.
HarrysToy
"Get off my lawn!"
Great info and good to know!!
HarrysToy
"Get off my lawn!"
So , it is an aluminum case and the passenger side stamping plate has the serial numbers ground off. The tail shaft housing is steel and it has a junkyard written in yellow marker 30 spline on it.....
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