dana21-dana20

[gfbgreaser289]

will a does the dana 21 and dana 20 share the same bolt patterns and input shaft. i have a np435,dana21 and i want to know if i can put a dana 20 behind it or is it junk.

[LeviGarrett76]

dana 20 from earlybronco???? i dont know but i think the eb 20 has a 27 spline input and the 21 has the 31 like the 205

im not sure, anyone else know?

[Homer J]

The 20 and the 21 both use a 28 spline output on the transmission. You can use the 20, but you would use a 435- 20 Bronco adaptor, input gear and adaptor sleeve.

Jason

[santa]

will a does the


You lost me right there:confused:

[welndmn]

I was told NO many years ago, something did not line up right.
You need an 435/20 adapter.
If they did bolt up, EB guys would be using those stock adapters that you see at the junk yards instead of paying 300$ for the adapter.

[mtnbronco]

i think the bolt pattern for mounting it is different

[gfbgreaser289]

on the output shaft of my 435 it has a huge gear that is bolted onto it like a fixed yoke. then the 21 has a femail gear that slides over the output. The flange pattern on the 21 is the same as the 20 i know that much. can anyone show me a dana 20 input from a 435.

thanks.

[gfbgreaser289]

do any of you EB guys know where i can adapt a 2wd c4 to a np205.

[wheelin66bronco]

do any of you EB guys know where i can adapt a 2wd c4 to a np205.

My first suggestion would be in a garage or in a driveway but I'm sure there are other locations.:D

What do you mean "where" as in "can" I adapt a 2wd c4 to an NP205? Or where as in who to buy the adapter from???
I would think you could make some sort of divorced setup but why when a 4wd C4 is easy to get.

[mtnbronco]

I think what you are describing is a spud shaft here is a pic

http://broncograveyard.com/images/catalog/D20SPUDSHAFT.JPG

[gfbgreaser289]

is that the spud shaft for the c4 or the 435.