How difficult is it to change gear ratio in Jeep wrangler?

redrock

New member
I recently did an engine conversion on my Jeep Wrangler YJ from the 2.5L I4 to a small block chevy 305 using a TH350 3 speed automatic tranny. The gear ratio is currently at 4.10:1 gears and at 55 mph i'm taching about 4000 RPM. What would be a good gear ratio to change to, and how difficult would it be to do.

I do realize that I'll have to change the front and rear at the same time.

Would it just be easier to get the axles out of an old wrangler YJ I6 with a 3.54:1 gear ratio?
 
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