how many rpm's will i drop going from 3.91 to 3.55????????????????

abodyjoe said

here is a nice little calculator to check with all different gear and tire sizes..
http://www.bigblockdart.com/forum/speedtire.php


going from a 3.91 to a 3.55 will make a little difference but not a huge one.. i did it in my dart a few years ago and it took the edge off some but the car still wasn't great on the highway. all depends what your looking to do with the car.

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Just a local weekend cruiser mostly. I really like he 3.91 because of the way it pulls with them. But sometimes I would like to just take a 100 mile round trip without the having to drive so slow and take forever. I have a 3.55 suregrip lined up to buy. Just want to make sure I make the right choice. Having to decide between performance and economy sucks.