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10 Bolt 8.2 & 8.5 Identification

45K views 10 replies 7 participants last post by  Weedsfast72 
#1 ·
Is there a way to tell the difference between an 8.2 and an 8.5 posi carrier?
With all the swap meets out there a lot of the carriers are just sitting on a table or the ground.Would there be a sure way to tell by looking for casting numbers and where would be a good reference chart? Also can you determine if the posi unit is damaged and what would be a fair price for a used unit?
I am intrested in a rebuild of my 10 bolt but being new at this it seems a good start is to ask a lot of questions.
Thanks Paul
 
#2 ·
Hi Paul,

If there is still a ring gear bolted to the carrier, take a look at the size of the bolt heads. If not, look at the size of the threaded holes for those bolts.

The 8.5" 10-bolts use 7/16" left-hand thread bolts. The heads take an 11/16" wrench/socket.

I believe the 8.2" 10-bolts use slightly smaller 3/8" bolts that take a 9/16" wrench/socket.
 
#9 ·
10 bolt

I have the same as mike, according to this thread its posted that the bolts have a 11/16 head, mine are also 3/4 , all the other casting marks and cover size matches the post, any input from the Guru's out there? 72 nova stock with an l6, soon to be different lol
 
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