Posi?

[Arlo]

I have a 64 Chevrolet SWB stepside on the rear Axle Tube i have found
"WA 318" I know it is a 373:1 i want to know how to tell if it is posi or not?
Do i need to drop the rear Diff. pan? if so what am i looking for?
Thanks for the help.

 

[dvalentine]

Jack up the rear and place on jack stands. Rotate the left rear wheel. Is the right side rotating in the same direction ?? Posi !

Another way is to get out in the boonies and do a burn out. Both rear tires leave rubber ? Posi ! Only the right side ? non-posi..

Val

 

[Arlo]

Burn out is not an option right now. ill go with the rotation method. thanks

 

[jaybyrd66]

well val, the lil burnout deal doesnt always work, i thought mine was a posi trac rearend to at first cuz everytime i do a burnout it will leave a dam good set of posi marks but when i jack the rear up and spin the left rear, the right rear says otherwise

 

[drabo]

Then it could have a limited slip rear diff. Not locked until you get on it. It wasn't factory if it has it.

 

[Hotrodkilroy]

I did Val's burn out test Sure as hell i had posi and then snap went the axle DOH!!! Kilroy was here!!!!!

 

[Arlo]

ooooh that sux. sorry to hear it......

 

[66 KUSTOM]

I did Val's burn out test Sure as hell i had posi and then snap went the axle DOH!!! Kilroy was here!!!!!

that sucks hotrodkilroy, the axle actually snapped? or did someone weld the gears and the weld broke?

 

[dvalentine]

I did Val's burn out test Sure as hell i had posi and then snap went the axle DOH!!! Kilroy was here!!!!!

It's NOT my fault !!!!!

 

[Hotrodkilroy]

Yup it snapped broke along the shaft. Thats some serious torgue. but the sahft was cheaper that the posi. Kilroy was here!!!!

 

[66 KUSTOM]

well at least theres something POSItive to look at (being cheaper then posi)