Hilljack68
Well-Known Member
On an 8 3/4 rear end, are the axle lengths the same for a Sure Grip vs. an open diff?
Axle length SG vs. Open
- Thread starter Hilljack68
- Start date
Yes.
- Local time
- 10:57 PM
- Joined
- Dec 25, 2011
- Messages
- 5,530
- Reaction score
- 6,798
- Location
- White Cloud, MI
The early models were longer in a open diff axle but, sometime around 64/65 they standardized the length.
Mike
I had a problem with cone sure-grip on my 66. axles were 1/4 to 3/8 inch to long. Wife called for lunch missed the to long. Never late for a meal.
Last edited:
R/T Boy 67
Well-Known Member
- Local time
- 7:57 PM
- Joined
- Apr 23, 2018
- Messages
- 1,783
- Reaction score
- 1,876
- Location
- Nanaimo B.C. Canada
Tapered axle rears had different length axles between SA and SG, but 64 was the last year for them.
R413
Well-Known Member
1964 and older tapered axles are different length. Sure grip axles the same, open axle shaft longer by 1/8" per side, 1/4" total. So you cannot swap a 1964 and older open third member into a 1965 and newer rear axle.
Last edited:
- Local time
- 10:57 PM
- Joined
- Mar 10, 2010
- Messages
- 30,653
- Reaction score
- 54,147
- Location
- Hanover, Pennslyvania
I thought 1964 and older the open diff axle is longer.
Made changes to post #4 correct now.
In post #4 I put a cone SG in my 66 open 8.75 and axles were to long as mentioned, why? There is no doubt that it is a 66 rear. It is not the adjuster. I pulled a power lock SG from another rear went right in and adjusted side play no problem.
In post #4 I put a cone SG in my 66 open 8.75 and axles were to long as mentioned, why? There is no doubt that it is a 66 rear. It is not the adjuster. I pulled a power lock SG from another rear went right in and adjusted side play no problem.
R/T Boy 67
Well-Known Member
- Local time
- 7:57 PM
- Joined
- Apr 23, 2018
- Messages
- 1,783
- Reaction score
- 1,876
- Location
- Nanaimo B.C. Canada
All 8 3/4 sure grips have the same length thrust spacer from the factory , same length as 65 and up open. My guess is misalignment between side gear and cone splines in your cone type SG.
Hilljack68
Well-Known Member
Whether it's a Sure Grip or an open diff, are the shafts the same (between left and right)?.... on a 1973/74
Yes
Similar threads
