What cars and gear ratios came in POSI for the 82-84 model years??? I want a stock unit, for a 3 series carrier.

 

Well I know an '84 Z28 did, and it basically had in it what you would call todays Auburn cone type.

 

Yes.

The L69 cars had 3.73 gears, and some had the optional posi.

That said: You'll have alot easier time coming up with a SLP late-model posi and a 6-cylinder rear end to get late-model axles out of, and it will be a better setup to boot.

 

My RS. I put some Richmond 3.23's in it, upgrading from the stock 2.73 ratio. Then I got a Posi unit out of a 305 TPI auto car for 50 bucks and stuck it in there.

What would be the easiest way to go. I have 3.73's and I want to keep the gears but get some posi going on. I just bought some new rubber so I don't want to fry one tire.

Can I get the same new model unit, grab some axles from a newer model unit from pick a part and put them into my housing? Will they fit? I thought that beside the spline # being different, the ring gear was also a different size.

I am definately not swapping housings, I have rear discs.

I hope I don't sound dumb or anything but I just can't spit out the spline # diff. and ring gear sizes, I can't remember. I install all this stuff myself.