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2blu442 · 05-11-2007, 02:14 PM

Look for a code stamped in the axle tube on the pass side. Should be two letters or a letter and a number. If you can find that and post it someone can let you know what the factory ratio was in the rear. There's always the chance that it may have been changed over the years, but being a non-posi hopefully that hasn't happened. Are you going to race the car or use it as a daily driver? I've heard a lot of good things about the corporate 8.5 rear ends and the parts are plentiful for them. John

05-11-2007, 02:14 PM	#12 (permalink)
2blu442 Senior Member Join Date: Sep 2006 Location: Medford, Oregon Posts: 775	Look for a code stamped in the axle tube on the pass side. Should be two letters or a letter and a number. If you can find that and post it someone can let you know what the factory ratio was in the rear. There's always the chance that it may have been changed over the years, but being a non-posi hopefully that hasn't happened. Are you going to race the car or use it as a daily driver? I've heard a lot of good things about the corporate 8.5 rear ends and the parts are plentiful for them. John __________________ 1964 Cutlass Factory 4spd 1965 442 4spd 1967 442 Auto 1967 Cutlass Convertible 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!