12 bolt Olds rare 31spline anti spin (posi unit) 672 case

monzaz · 09-04-2007, 10:50 PM

I have a rare 672 case 12 bolt olds 'O' typelimited slip diff unit.

It has been totally rebuilt and is ready to Run.

This 31 spline unit was used in 2 years only 1967 & 1968

If you have one of these rare optioned 442 rears this unit is for you. Esspecial if you have a numbr matching show car.

This unit can be retro fit into a 28 spline housing also with conversion bearings which I can also supply. You can have Moser make up some 31 spline axles also and you'll have a great strong Olds rear diff.

Chevy 12 bolts only came with 30 spline so you ca have bigger axles then that rear.

Now the killer...The price. This unit is $489.00 It is Original and rebuilt. Check out Super Cars Unlimited and you will see it is still cheaper then SCU and this is an ORIGINAL GM CASE gears and clutches. Jim -J D Race

09-04-2007, 10:50 PM	#1 (permalink)
monzaz Senior Member Join Date: Jul 2006 Location: Richfield, Oh Posts: 85	12 bolt Olds rare 31spline anti spin (posi unit) 672 case I have a rare 672 case 12 bolt olds 'O' typelimited slip diff unit. It has been totally rebuilt and is ready to Run. This 31 spline unit was used in 2 years only 1967 & 1968 If you have one of these rare optioned 442 rears this unit is for you. Esspecial if you have a numbr matching show car. This unit can be retro fit into a 28 spline housing also with conversion bearings which I can also supply. You can have Moser make up some 31 spline axles also and you'll have a great strong Olds rear diff. Chevy 12 bolts only came with 30 spline so you ca have bigger axles then that rear. Now the killer...The price. This unit is $489.00 It is Original and rebuilt. Check out Super Cars Unlimited and you will see it is still cheaper then SCU and this is an ORIGINAL GM CASE gears and clutches. Jim -J D Race Last edited by monzaz : 09-04-2007 at 10:51 PM. Reason: spelling

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