dana 60 perch questions...

I have acquired an uncut, complete e-body dana 60. This rear had been under a few different cars over the years and had no perches.
I just got perches from Mancini.
I need to know if you set the perches on same plane as the machined pad for snubber, or if there is a slight angle to them that needs to be duplicated.
Even though I don't get thru this place that often, I still lurk a little and really appreciate all of you folks and the knowledge you share!
Thanks in advance for your help!

Every one has its own angle. I measure before I replace. In your case I would suggest asking Cass Dr.Differential and I am sure he can give you a number.

As said it'll have a specific OE angle. You might get the car setup & weld em at the particular angle you need to get YOUR vehicle ujoints parallel but in different planes but wait & see what the Doc has to say. I'm in the same situation & am wondering if I should get the leafs as level as I can then set the housing on top of em then tack em so they are parrallel/correct angle or get the pads equal on the bench.

I asked Dr Diff the exact same question, his reply

THEORETICALLY, IF YOU LEVEL THE
PERCHES (44 ON CENTER) WHEN THE PINION IS POINTING UPWARD 8 DEGREES,
THE REAREND WILL BOLT IN THE CAR WITH A STOCK PINION ANGLE.

I had the rearend in the car with desired angle before welding.
Might as well get it exact.

(1) CNXT thank you (2) likely it'll be in (your) vehicle for a long time so might as well get the angle correct WO the use of angle shims even if you weld it to a non stock angle

Wouldn't the perch spacing depend on which car it's going in?

A B and E all have different spacing.

Stock E-body spring perches measure 46" on center. The pinion points upward 7 degrees when the perches are parallel to the ground (bottom of housing).

Quote:

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Wouldn't the perch spacing depend on which car it's going in?

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(1) yes different spacing (2) Doc what is the A body (8&3/4) angle?)