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3.23 posi

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Post by Hillbilly Tue May 03, 2016 3:14 pm

So I guess the good part of getting old is having a large parts stash. I have a 3.08 posi our of my 80 camaro sitting in the shed and figured it would be a good swap for the open 2.73s. But I also mess with 73-87 trucks specifically 4x4s and one of my good buddies has a set of 3.23s. I was thinking this would be a much better but not as deep as a 3.42. I figured this was a good compromise with the l65. Any first had experience? I will be using a 235 60 15 tire.

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Post by Joe73 Tue May 03, 2016 4:04 pm

I'd go with the 3.23 since you have them. But if your buying gears I'd go 3.42 or 3.73 and increase tire diameter to where you like your rpm range.
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Post by Hillbilly Tue May 03, 2016 4:15 pm

I can get any thing from a 2.73 to 4.10 but for now I think they will be good with no overdrive. Hope after the big block is built that I can get mpg out of it by turning it 1600 at 65. I was thinking about 3.42 but even with a 275 60 it would be a little high at 70. I have 4.10s in my camaro with 29.5" tall tires and scream it at highway speeds but this is more of a cruiser.

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