Type O gears
#1
Type O gears
Looking for a set of 3.73 gears for my rear end, I have a 1970 type O POSI rear with 3.23 gear in it and a 671 carrier, I would need the carrier and gears for 3.73.
Thank You
Thank You
#2
Fyi
No such animal. Choose 3.42 or 3.91 as those are your choices. Used or NOS as no one is making new ones.
#4
With a 71 and up fear you can get that ratio. O type you get 2.56, 2.78, 3.08, 3.23, 3.42, 3.91, 4.33, 4.66, and rare 5.00. The aftermarket carrier used in our rear still only use the O type gears. Want 3.73 find a 71 and up corporate rear core and get it rebuilt. Parts are cheaper generally than O type.
Last edited by Magna86; June 23rd, 2015 at 11:20 AM.
#5
Richmond gears makes 3.42 and 3.90 gears that are a direct fit for your current posi unit. There has never been a 3.73 gear made to fit the O type 12 bolt. If you are set on getting 3.73 gear, get an 8.5 10 bolt out of a 71-72 Cutlass or Skylark and then you can buy just about anything to build it as there are many different posi units and lockers for 8.5's as well as many manufacturers that make gears for it.
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