B210 Diffs Advice

[angliagt]

I finally got around to installing the transmission

back into the '78 B210 (4 speed).Installed the NOS driveshaft,

& found out the rear flange is smaller,& has a smaller bolt circle.

I was thinking that it would probably be easiest to replace

the differential with one that woulfd fit.Ideas?

 

- Doug

[datzenmike]

Then the drive shaft is wrong then? Likely the NOS is for a pre '75 H-145 axle and yours is an H-150. I think you would have to find a smaller a pre '75 H-145 diff to match the drive shaft.

[angliagt]

I finally installed the transmission back into

the '78 B210 (4 speed).Installed the nos driveshaft

that I bought from OEM Surplus.The flange on the new

driveshaft is about 1/4" smaller than the original.

I also have a '74 B210 parts car with a diff

that will fit.Do I have to swap the diffs out,or can

I just swap the flanges?

What's the best/easiest way to go about this?

 

- Doug

[datzenmike]

No need for two posts on the same thing.

 

I knew the B-210 changed diff size in mid 70s so I checked. Up to '75 an H-145 differential was used, after, an H-150 was used. These are two different size differential assemblies and I think this would include the flange. Just remove it and try swapping. If it doesn't fit swap the whole axle assy in as the H-145 gears won't fit the H-150 housing.

[angliagt]

Mike,

 

Thanks for the reply.Sorry for the double posts.

 

- Doug