489 rear case, do I have posi?

[moparfanUSA]

How do I tell if I have a posi rear. 1969 489 case with 3.23 gears.
I forgot to turn the axles before I took it apart, so I am at this point.
Any way to tell?

 

[HT413]

Nope, you don't have posi, you have a sure grip. It's the cone type unit, which is common to 489 rears.

 

[WP29440SE]

i can tell you with 100% certainty , you don't have a posi if that is a Chrysler gear set


that would be a sure grip

 

[mr. b]

yes it's a sure grip

 

[bobtile]

Hahahaha! Get him guys! He said posi!!!!!!

I was going to do the same but you beat me to it.

 

[67 B-body]

Lol.... Poor fella used an off brand terminology.....
Both wheels should spin when you stomp the go pedal....
Happy Moparing, and good luck with your "Sure-Grip" unit...

 

[D575]

3:23's :eusa_doh:

 

[Coyoteduster]

Posi is for girls, how many black marks do you leave on the pavement when you launch? :3gears:

 

[wannadrag]

The suregrip gives it Posi-tive traction.

 

[440+6]

I knew you guys where gonna beat him up.

 

[Budnicks]

yes both wheels/tires will sometimes spin... it has a limited slip/AKA Chrysler/Mopar nomenclature "Sure Grip" type differential in your 489 8-3/4" carrier