posi unit

projectheaven · February 3rd, 2008, 10:41 PM

Hello all, I want to install a posi unit into my 72 cutlass supreme and I was wondering what is in the back.Do olds commonly use 10 bolt 8.5 in the rear? If so,Then what cars are compatible?

buzzbomb · February 5th, 2008, 11:08 AM

If it is the original rearend it should have a 8.5 corporate rearend. If you need a complete posi changeover i have one in 3:42 gear ratio. Everything you need to change it over bearings, posi unit and setup tool and new richmong gears. lumanutt@msn.com

February 3rd, 2008, 10:41 PM	#1 (permalink)
projectheaven Registered User Join Date: Dec 2007 Location: San Francisco bay area Posts: 180	posi unit Hello all, I want to install a posi unit into my 72 cutlass supreme and I was wondering what is in the back.Do olds commonly use 10 bolt 8.5 in the rear? If so,Then what cars are compatible? __________________ ____________________ 96 Impala ss 96 Buick Rivera(supercharged) 00 Yamaha R1

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February 5th, 2008, 11:08 AM	#2 (permalink)
buzzbomb Registered User Join Date: Oct 2007 Posts: 32	If it is the original rearend it should have a 8.5 corporate rearend. If you need a complete posi changeover i have one in 3:42 gear ratio. Everything you need to change it over bearings, posi unit and setup tool and new richmong gears. lumanutt@msn.com