Derek Posted March 2, 2009 Share Posted March 2, 2009 I did search. No really! Here's the deal. Since I got my car back on the road I've had my f4w71b 4 speed and my fs5w71b switched back and forth a few times. The upshot of the deal is I really like the 1-2 ratio on the 4 speed. I've heard that they are the same transmissions but with a 5th gear added to the reverse section. Can I take the 5th and reverse goodies from the 5 speed and add them to the 4 speed? Thanks Derek Oh and I know someones going to post a link with the pertinent info to prove I'm a searching slacker! But I did search. Quote Link to comment Share on other sites More sharing options...
cygnusx1 Posted March 2, 2009 Share Posted March 2, 2009 Sorry I don't have facts to back me up but I think the 5 speeds have a slightly fatter tail section to fit the 5th gear in it. Do a visual if you can. Look at both together. 5th resides in the tail section. Quote Link to comment Share on other sites More sharing options...
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