WTB: input flange for a sideloader diff!

mojojoy

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WTB an input flange from a 4 bolt flange sideloader like the one in the 1st picture!
Also do you guys think flanges are interchangeable between early CS/1800 3 bolt to the later 4 bolt kind?
 

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also be aware of the difference in splines, earlier are coarse, later are fine, same as per the output flanges. Where are you based? I have lots of the fine (i need the only coarse on i have)
 
Daniel,

If you check RealOEM, 33121200282 fits both e9 and NK 1800/2000 differentials. The NK diagram shows both, what year is your 1800?

Chris
It’s a late 67’ 1800! Guibo attached to the differential. And U- joint to the tranny. Doing a 5 speed conversion and need to invert the driveshaft to get rid of the rear mounted expensive unique guibo.
Since it’s an 1800 I want to keep the 411 sideloader but will need to replace the flange for a 4 bolt style instead of the 3 bolt!
 
My 2000 4.10/4.11(?) sideloader has a four bolt flange and five speed OD, probably installed prior to Rey’s ownership.
Chris, yeah I got a 364 sideloader ready to go. I could see if I can swap the flanges between those but don’t want to take apart the 364 yet. Want to find a flange and experiment with that. Want to deal with Crush washers, preload once.
I believe the 364 will be too tall for the 1800 with the 5 speed!
 
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