3.91 to 3.55 in 8-3/4″ Rear
Tech Question
ron stahl, millersburg, PA, 1969 dodge dart 440
My question is: I plan on changing my 8-3/4” gear (489 case) from 3.91to 3.55. I have Yukon 3.91 in now, new gears are Strange US gear. Do you think Iwill need a shim…