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What rear gear should i get?

862 Views 3 Replies 3 Participants Last post by  nova7chevy4
I was running a 3.89 rear end gear with a 235/60-15 tire and i liked how it ran with them but i have a bigger tire on there now a 30/12.50-15 and it doesnt respond like it did so what gear should i go with to get that same feeling or better?
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4.30-4.56 to put you bak in the same spot. The old tires were 27" the new ones are 30" you should go 1 step in gearing for each inch of tire.

3.89 at 60mph ,3000 rpm with 26" tire
4.56 at 60mph, 3050 rpm with 30" tire
Well it seems like 4.56 isthe way to go.
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