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the newer overdrives are (bigger) a 700r4 is a .62 if i am not mistaken and a 4l65e is a .68 or something close, the other thing to think of is tire size. I have 3.07s with a th350 and 255 60s out back. a taller tire will make it seem as if I had a 2.73 gear. so lots of factors
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67' Chev swb step side
69' SS elky
03' Chev ext cab 4X4
hey who lernt me to spell 
 is there anything else?
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