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Old September 26th, 2009, 05:00 PM   #1 (permalink)
2blu442
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Need Help With Posi Carrier Identification

Trying to organize the garage led me to pulling the guts out of what I thought was a 1973-77 Chebby mid-size rear end then scrapping the rest. I was expecting the corporate 8.5 unit but what I found has different casting numbers on it than what I expected. Does anybody recognize the numbers on this and know if I can install this in a 1972 Cutlass housing?



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1964 Cutlass Factory 4spd
1965 442 4spd
1967 442 Auto
1967 Cutlass Convertible
1967 Cutlass four door daily driver
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1973 Che*vy 3/4 Ton 454/TH400 Tow Vehicle
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Old September 26th, 2009, 06:09 PM   #2 (permalink)
wmachine
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Jim at http://www.jdrace.com (monzaz here on CO)
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Old September 26th, 2009, 06:55 PM   #3 (permalink)
J-(Chicago)
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It's an 8.5"


2.73-5.57 ratios. Casting number for the bolt in axle is 725
and the c-clip casting number is 410408
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Old September 26th, 2009, 06:59 PM   #4 (permalink)
2blu442
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Thank you for your help guys! I was expecting the 410408 but am glad that it will still work.
John
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1964 Cutlass Factory 4spd
1965 442 4spd
1967 442 Auto
1967 Cutlass Convertible
1967 Cutlass four door daily driver
1968 442 Auto
1969 442 W30 Auto
1970 442 4spd
1971 Cutlass Flat Top Wagon
1973 Che*vy 3/4 Ton 454/TH400 Tow Vehicle
Only the tow vehicle is finished!
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