KS10 rear end

[Asshat]

Originally Posted by Flathead Smith

To remove the third member you only need to:



Finding the 4:11 third member will be your toughest part, but if you do, the install is easy.
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There is another option and that is to use a A833/NP833/MY6 transmission in place of your four speed (most likely a Muncie SM420), or one of the more modern 5 speeds used in 1988 and up year Chevy/GMC trucks. The more modern five speeds will have a good gear spread and have an overdrive, which will turn your 4:56 into a ≈3:30 in OD, and really may be your best solution.

About two years ago I went looking for a A833 and actually found two on the same day. The A833 transmission was found in 1980-87 Chevy Trucks/Vans/Step Vans. The aluminum cased version of the transmissions was used for sure in the 2WD 1/2 ton with the gasoline engine. The cast iron version was used in the 4WD (MM7) and Diesel 3/4 ton version (and possibly the 1/2 ton diesel version also). I was able to get both the 2WD and 4WD cast iron version, which I prefer.

Is the A833/NP833 trans the same thing, or two different transmissions? Seems like the A833 does not have overdrive, you have to add it. Is this true?
Does the NP833 have overdrive? And it bolts to a 292 ?